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The Link of mathematics is designed to help children develop their mathematical skills. Each Link or page has four practice exercises with short and varied activities to consolidate learning and increase self-esteem. The dinosaur series comprises four workbooks starting from third grade of primary school. The teacher can use any of the workbooks for 4 th, 5 th or th grade of primary or secondary school, depending on the level. At the end of the workbook there are two evaluation links. We use synonyms for mathematical operations so the children will become familiar with them and quickly recognize and relate them. - THE SUM with add, altogether, increase, plus, how many, more than..., the total of..., 3 more than... - THE SUBSTRACTION with the difference, less, minus, decrease, take away, what is left, fewer than... - THE MULTIPLICATION with multiply, product, 4 times..., add up equal sets (3 sets of five) - THE DIVISION with share, dividing, how many sets of 2 in 10 The workbook DINOSAURS 0 is introduced by a presentation of dinosaurs. There are more than 50 different dinosaurs. We are herbivores. We eat plants and twigs. We are the largest dinosaurs. I m an omnivore. We are carnivores. We eat meat. We have got sharp teeth and claws. 2
Contents: - Numbers and calculation: Reading and writing numbers in figures and words Using symbols < > = Units, tens and hundreds Counting forwards and backwards Counting forwards in 2s, 5s... 10s Odd and even numbers Addition and susbtraction (practical applications) Multiplication tables and additions Division tables and remainders Fractions 1/2, 1/4 Half, double, two times... - Measures: Units of length: km and m Units of mass: kg Units of capacity: litre - Time conversions: Years, months, weeks, days Hours Telling the time (clocks) - Money: - Geometry: Euro and centims equivalents and conversions Shopping calculation Shapes (square, triangle, rectangle, circle, pentagon, hexagon...) Vertices, sides, edges Angles Polygons: cube, prism, pyramid, cylinder, cone and sphere - Estimation, probability and statistics: Graphs and tables Odd numbers: 1, 3, 5, 7 Even numbers: 2, 4,,... Adjectives Thick - The thickest Thin - The thinnest Long The longest Short The shortest Large The largest Small The smallest Big The biggest Heavy The heaviest Light The lightest Great The greatest Prepositions Question words What? Which? How much how many? Verbs To write To draw To choose To divide To find The language of maths minus plus multiplied by divided by equals is greater than is less than Side ½ half ¼ quarter ¾ three-quarters Edge/edge s Vertex/vertices 3
I m a baby triceratops. I have three horns in my head. This baby triceratops wants to play with you. Try to discover where the triceratops is. on under behind between In front of 4
How many legs? THE BABY TRICERATOPS LINK - How many phones are there? 9 Multiply 2 by 3 How many fingers are there in two hands? 3 twos are 2 + 2 + 2 = 7 minus 2 5 10 +... = 9 4 plus makes Write the number 9 in words Nine 5 plus 1 makes Count the dots 10 minus 5 makes 5 How many squares are there? 1 1 +... = 5 4 3 plus 3 makes To make 10 2 plus 2 plus... Write the number 10 in words Ten and 2 makes 10 plus 10 makes 20 Continue the series 2, 4,,... 10 The longest The shortest Which one is the longest? How many cubes are there? 3 cubes Which is the shortest pencil? How many cubes are there? cubes How many euros are there? Continue the series 4, 7, 10,... 9 13 Draw the number 325 in the abacus Draw a triangle 5
- THE BABY TRICERATOPS LINK - Colour one half of the shape How many days in a week? 7 days Draw a circle How many euros? 9 How many tails are there? 3 tails The longest Colour one half of the shape Write the number in words Eight Continue the series 40 10, 20, 30,... 10 plus 3 makes 13 Eleven Write the number 11 in words The missing number Two, four,..., eight The smallest number, 15, 11 Choose two numbers to make 10 5 4 3 Six 11 and 4 10 plus 10 plus 10 30 Two plus four equals 9 minus two equals 7 Which one is the shortest? Half of 4 2 Double six What time is it? What time is it? It s three o clock It s eight o clock Which one is the thinnest? Where is the book? on or under Under How many squares? 4 How many petals are there? 1 How many arms? In words Four Colour one half of the shape Where is the book? on or under The pentagon? On
THE BABY TRICERATOPS LINK - 4 plus... = eight 4 Eight plus six 14 Double 5 is 10 Eight minus eight 0 Two tens are 14 -... = 10 20 4 How many coins are there? 5 coins How many eyes are there? eyes How many coins are there? 5 coins Write the number of flowers Nine 2 times four Which one is the thinnest? Altogether 3 + 5 + = Double 3 14 plus plus 1 Complete the series 14,..., 10, + = 20 How many apples are there? 4 Find the difference 5 3 = Complete the series 5, 3, 1,... 79 How many bananas and apples are there altogether? Altogether 0 + = 1 How many rectangles are there? Colour the odd numbers in red 1 2 3 4 5 Colour one quarter of each shape 2 Altogether 20 1 2 How much does it cost? 32 20 What time is it? It s three o clock Colour the even numbers in blue 1 2 3 4 5 The thinner 7
THE BABY TRICERATOPS LINK How many paintbrushes are there? 15 How many pairs of gloves are there? 3 pairs Which number is the even number? 3 1 Count in fives plus Write the number after 159... 10 10 plus 10 plus 10 Write the number before 2... 29 Half of 10 30 3 25 + 25 = 50 Write the number 9 in words Nine How many sides does a square have? 4 sides minus 3 = How many vertices does a square have? 4 vertices 30 +.. = 0 3 30 25 and 25 and 25 100 plus 50 = 75 150 4 plus 10 14 10 = 4 +. 5 plus 20 Double 5 25 10 How much does it cost? 1 2 3 The thicker Colour one half of the shape Which shape is the cone? One half of... 3 Colour one half of Altogether + = 1 It s o clock Draw the hands. One half of... Which shape is the cylinder?
Triceratops is herbivore. We eat plants. We use our horns to stab enemies. Count how many horns. Complete One triceratops has got 3 horns Two triceratops have got horns 9 horns 15 horns 30 horns 9
Hello, I m an ankylosaurus I m a baby dinosaur. One egg of a dinosaur is as big as a football. How many eggs has each dinosaur got? Join each dinosaur with their eggs. I have got three eggs I have got eight eggs I have got twelve eggs 10 I have got 4 + 2 + + 3 eggs
THE BABY ANKYLOSAURUS LINK - 3 plus 3 Half of 2 Multiply 3 by 2 Double 2 Two times 4 9 plus 9 1 4 1 Write the number in words. Eight How many vertices has the cuboid? vertices 10 plus 7 makes Five plus 1 17 How much? 13 Colour the pentagon Four times two 9 minus 3 How many rectangles are there? 3 Write the name of this shape. Square, rectangle or triangle Square How many squares are there? 1 How many legs? plus 9 makes 17 Altogether 10 + 9 + + 10 = 37 The smallest How many shoes are there in two pairs? How many marbles are there? 4 shoes 10 The biggest Where is the book? next to under Which is the shortest? Write the number in the abacus 421 Colour one half of How much is it? 1 3 4 Which one is in between? 11
THE BABY ANKYLOSAURUS LINK - Which one is in between? How many flowers are there? Two minus two How many dots are there? 0 plus plus makes 1 Four plus eight Double Three plus nine Half of 10 4 plus... = 10 3 plus... = 10... 4 = 10 5 7 14 Count backwards in twos 1 22 20 1... x 10 = 0 Twelve Write the number in words Six plus 10 1 Which is the biggest? Colour half of the square Which number is an odd number? 3 2 3 4 5 sets of 10 50 The longest How many circles? 2 Roger has got. He buys 14. How much money is left? Write the missing number 103,..., 111, 115 107 It s eight o clock Count and write the number The shortest x 5 = 50 + = I have 3 flowers and Paul has flowers. How many flowers are there altogether? 9 flowers The biggest dinosaur
THE BABY ANKYLOSAURUS LINK - Circle the greatest number and write it 330 203 330 230 How many days in a week? 7 days How many vertices are there? vertices Draw a circle The largest square Which fruit is in between? Altogether 30 Two times six How many days are there in two weeks? 14 days Two times four 1 -... = 10 What is half of 100? 50 Choose two numbers to make 15 7 5 7 and 100 minus 50 Half of 50 4 Eight plus ten 1 10 plus 10 is 20 105, 205, 305,... 405 How many eggs in a dozen? Write the total of muffins What time is it? x 3 = 27 It s five o clock It s three o clock Which is the thickest? How many pencils are there? In words Six How many sides does the square have? Which one is the shortest? How many coins? 4 sides 5 coins Which cat is on the stool? How many money? 7 13
How many tails? THE BABY ANKYLOSAURUS LINK - 3 tails How many flowers? flowers Multiply x 2 The smallest number 235 253 205 205 Two times four x 2 = Half of Two times seven 14 3 more than 10 13 Write the number 11 in words Eleven 4 more than 7 Double 4 3 more than 3 9 plus 9 1 less than 4 Add to 2 less than 4 plus plus plus 11 3 2 1 24 3 less than 10 7 How many euros are there? 7 Draw a book under the table How much is it? 1 2 1 4 The thinner It s five o clock Altogether 40 22 1 How many sides altogether? sides Complete 22 +... = 30 Which part is missing? How many paintbrushes are there? The change from 15 14
Most of dinosaurs eat meat. The rest are herbivores. COUNT THE DINOSAURS BELLOW: How many dinosaurs are there in total? How many dinosaurs are herbivores? How many dinosaurs are carnivores? What is the difference between carnivores and herbivores? 10 dinosaurs 5 dinosaurs are herbivores 4 dinosaurs are carnivores There are 1 herbivores more than carnivores H H H C C H Omnivor H C C 15
20 cm I m a baby T. Rex. My mum say Tyrannosaurus Rex but my friends say T. Rex. One tooth of T. Rex is 20 cm long. It is as long as a banana. T. Rex has got 0 teeth. 1 m = 100 cm How many T. Rex teeth do you need to have one metre? Draw the teeth 0 cm 50 cm 100 cm To make one metre we need 5 teeth of T. Rex. 1
How much is it? THE BABY T. REX LINK - 9 Altogether Write the number 1 in words Eighteen Write the number of dots in words Eight 3 times 3 102 plus 201 = Write the missing number +... = 24 -... = 9 Nine and... is ten Five and two more + Write the missing number 103, 113,..., 133 How many euros? Colour the triangle 1 less than 10 9 One 7 303 3 3 50 9 3 times six is 1 How many days are there in a week? 7 20 plus 40 0 200 plus 10 equals 210 10 plus 10 plus 20 Write in words Twelve Which book is under the table? Which one is on the table? The biggest Ann pays 10 for a story book and 20 for a fabule book. How much money is altogether? How many vertices? 20 10 30 vertices 17 The smallest The shortest Altogether 10 The heavier The lightest 2
THE BABY T. REX LINK Double 24 How many dots? + = 7 20 plus 20 Two less than 10 40 Colour the rectangle How much is it? 0 cents. Colour the half of the square Write the number 17 in words Seventeen Count backwards in threes 90 99, 9, 93,... Six more than 10 1 Ten and... = eighteen 100 plus 30 equals 130 Half of 20 Add 10 to 3 Six times two Add to 10 minus 3 10 plus 10 10 5 13 1 20 305 plus 505 10 Seven times two 14 How many halves melon can I have? Complete the series 7,, 0, 2, 4 7 How many apples with 4 halves? 2 apples How many eggs in four boxes? 24 eggs Altogether How many eggs in two boxes? 5 hats eggs Which one is the sphere? Altogether 1,5 1 2,5 The table has four... The thickest legs pegs beds 1
THE BABY T. REX LINK The longest How many pairs of feet? 5 pairs 300 100 plus 200 150 minus 50 Nine plus eight makes 2 times 3 17 100 Write the number 13 in words Thirteen 2 times 10 Altogether 10 90 + 70 = 25 plus 25 plus 25 plus 25 The thinnest 9 plus nine plus... makes 20 100 2 + = Write the number after 39 How many circles are there? Write the number 20 in words 370 2 Twenty 10 minus 9 makes 1 Count backwards 5, 75, 5,... 55 How many dots are there? In words Which shape has four sides? Four Which part is missing? Join two coins to make 20 Count the pyramids 2 10 and 10 Draw three cones Colour one half of this shape It s three o clock How many cubes are there? In words Two Which one is the sphere? Draw a cylinder How many toes are there? 10 toes 19
THE BABY T. REX LINK Which one is in between? Draw it How many eggs in three boxes? 1 eggs Altogether 5 How many muffins in 2 plates? 1 muffins 9 add 9 1 Six times three 1 Draw a dog next to the tree Write the missing numbers 35 and 41 29, 32,..., 3,... Continue the series,, 1,... How many petals in six flowers? 24 24 50 add 10 equals 0 Which one is an even number? 7 13 Which day is after Monday? Tuesday 15 minus 7 is plus 10 makes 10 take away 2 Eight twos are 3 multiplied by 1 1 1 How many kilograms are there? 2 kg Say the number of bottles in four crates. 3 bottles The shorter It s five o clock Write the missing number to make a total of Draw a ball under the chair... + = 4 Ann has 5. Roger gives Ann 4. How much money has Ann now? Today is Monday. 9 What day will be tomorrow? Tuesday How many legs? Write the missing day Monday, Tuesday, Thursday, Friday, Saturday and Sunday Wednesday There are 2 cakes and biscuits. How many cakes and biscuits altogether? Helen has 10 cherries, she eats 2 cherries. How many cherries does Helen have left? Eight 20
I m very fierce. I eat other herbivores dinosaurs. I can eat 200 kg of meat and bones in one bite. Look at the table and answer. kg 00 500 400 300 200 100 0 T. Rex Spinosaurus Velociraptor How many kilograms does the spinosaurus eat? Spinosaurus eats 300 kg What is the difference, in kilograms of food, between the velociraptor and the T. Rex? The difference is 400 kg of food 21
I m a baby brachiosaurus. I am one of the largest dinosaurs Who is the largest dinosaur? Put in order and write the name V 1 m B 2 m 13 m A 25 m 5 m P 2, m 9 m 10 m T Brachiosaurus T. Rex m Anlylosaurus Parasaurolophus m 22 Velociraptor
THE BABY BRACHIOSARUS LINK Write one less than 1.000 999 Write the number before 99 9 50 minus 10 40 7 plus 10 is 17 Double 7 is 14 The sum of 25 and 50 is 75 Write the even numbers 20 and 20, 9, 5, 7 times two 14 Four fives 20 Write the number of dots in words Seven Add 9 to 10 19 Write the name of this shape Square 100 minus 5 is 3 times 4 95 Write the number of cherries in words Eight How many cents? 100 Double 9 Add one to 99 cents 1 100 2 =... cents 200 cents Which is the odd number? 10, 1, 15 15 Write the names of the shapes Join the shapes to their labels has 3 sides has 43 sides has 40 sides has 0 sides sides Write one more than sides 1 fifteen How many legs in 3 stools? Write the missing numbers body head leg arm Body= square Head = circle Arm= rectangle Leg= triangle 1 9 legs 9 and 15 How many more apples than bananas are there? Draw a cat next to the house Write in order 249, 204, 425 Complete In a bunch there is 2 cherries. How many cherries in 3 bunches? 2 more 204, 249, 425 1 flower petals 2 flowers 1 petals 3 flowers 24 petals cherries 23
How many apples? THE BABY BRACHIOSARUS LINK - 3more How many pears? 2 pears How many flowers? In words 9 flowers How much? In euros 2 Ten plus six makes Two times 9 10 + 30 + 20 + 15 = 75 Half a kilo plus half a kilo is 300 plus 500 equals Half of 20 Ten and. makes 30 20 Double 1 00 1 1 kg kg 10 kg 4 The longest Write the second letter in the row A B C D B Three less than 100 9 times 5 97 45 Number 7 is an odd number even number 7 sets of 5 35 Take 200 from 500 300 3 times eight 24 Altogether 25 = Draw a pencil shorter than this 33 Draw each shape Circle Triangle Square Rectangle Colour one half of each shape The longer one Write the missing day Tuesday, WednesdayThursday, Friday, Saturday and Sunday Monday Charlotte has 5 and Bernard has 2. How many euros have they altogether? 7 One child 2 hands, and children? hands Three o clock 24 How many socks are there in six pairs? socks
THE BABY BRACHIOSARUS LINK - Thursday Which day comes before Friday? After 109 110 00 plus 300 makes Double 7 1.100 14 Take 10 away from 0 70 Write the number in words Twelve Take 2 away cherries Which one is a triangle? d) Divide 20 between 2 10 Which day comes after Tuesday? Wednesday How many tails? In words Two Which pencil is the shortest? Colour one half of Take 20 from 0 Three tens are Double 1 30 40 2 0 4 10 more than 110 Complete 7, 74,.., 54 How many circles? In words Ten Write the second letter in the row A B C D E B Wich is the heaviest? Draw the hands to show the time :00 Count the spots. Write the number in words Fifteen Write the number 421 divided by 2 4 Write these numbers in order 105, 501, 110 105, 110, 501 Write the missing number 109,., 117, 1 113 Draw a line longer than this line 2 less than 10 Draw a line shorter than this line 25
THE BABY BRACHIOSARUS LINK - 2 times ten 20 How many days in a year? 35 10 minus 2 is Count backwards 20 35, 30, 25, Take 40 away from 5 45 How many days does a week have? 7 How much? 3 Altogether. Write the number in words. Ten 2 times 4 The half of is The day before Tuesday Monday Which is the first month of the year? February March January Double 20 7 plus 7 40 14 Half of 20 0 40. 10 Nine times five 45 Double is How many days are two weeks? 14 times three is Add to 10 1 1 How many wheels are there in a pair of roller-skates? wheels How many pentagons are there? 2 How many holds are there? 1 holds 9 divided by 3 is 3 muffins How many toes? How many hours Lilly has been studying? 20 toes Altogether 2,5 Count the points of all stars 9 11,5 from to How many pairs of feet can you see? 3 hours 3 pairs Colour one quarter 24 p 2
Dinosaurs are extinct about 5 million years ago when a huge meteor hit the earth. The earth becomes dark and cold. Dinosaurs don t find food. And they disappear. Only insects, some reptiles and small animals can find food and they don t die. Fruits that the dinosaurs find in a week Monday Tuesday Wednesday Thursday Friday Saturday Sunday 1) How many cherries do dinosaurs find on Sunday? 2) How many apples do dinosaurs find on Monday? 3) How many more apples are there on Wednesday than on Friday? 4) On which day the dinosaurs can find the most fruit? 0 2 3 On Saturday 27
1 Which is the smallest dinosaur? EVALUATION LINK 1 2 Ten plus ten makes 20 3 How many petals are there? Write the number in words Twenty four 4 Which is the even number? 5,, 9 5 Divide equally between two boys. 3 sweets 7 Which is the square? Roger has 4 lollies and Helen has lollies. How many lollies do they have altogether? 10 lollies How many wheels are there in a pair of roller-skates? wheels 9 It s eight o clock 10 Which number is missing? 7,,..., 10 9 11 Colour one quarter of each shape Ten more than 20 30 Paint the correct answers 1 2 3 4 5 7 9 10 11 Answer: I have... correct answers 2
EVALUATION LINK 2 1 Colour the rectangle 2 Write the numbers in words Five Three 3 How much is altogether? 1 5 21 4 How many triangles and squares are there altogether? 5 The shortest The biggest 7 Write the missing odd number 1, 3,..., 7, 9 5 Six times four 24 9 Take 3 from 100 97 10 plus 10 plus makes 22 11 How many holds are there? 20 holds Charlotte pays 20 for a book, 2 for a pencil, and 2 for a rubber. How much is altogether? 24 Paint the correct answers 1 2 3 4 5 7 9 10 11 Answer: I have.... correct answers 29
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