Answer Keys for Calvert Math

Answer Keys for Calvert Math Lessons 1 20 0613-0615 CONTENTS Math Textbook... 3 Math Workbook... 6

Answer Keys Math Textbook Lessons 1 20 CHAPTER 1 1.1 A There should be a ring around the chicken and an X on the horse. B There should be a ring around the toothpaste and an X on the shampoo. 1 There should be a ring around the red hat and an X on the green hat. 2 There should be a ring around the green pot and an X on the yellow pot. 3 The student should draw a circle between the two hearts. Mind Builder 1 1.2 A There are 2 squares to the right of the rope that should be colored. 1 There should be a ring around the red car. 2 There should be a ring around the green tennis ball. 3 There should be a ring around the butterfly. 4 There should be a ring around the stove. 1.3 A Sample answer: Ana sorted her objects by shape. I looked at each group to see how the objects are alike. I know my answer is correct because all the hearts are in one group, and all the stars are in the other group. 1 Sample answer: Kim sorted her objects by size. I looked at each group to see how the objects are alike. I know my answer is correct because all the large shapes are in one group, and all the small shapes are in the other group. 2 Sample answer: The circle does not belong. I looked at the group to see which one was different. I know my answer is correct because all the other shapes are large, and the circle is small (or all the other shapes have straight sides, and the circle is round). 3 Sample answer: I looked at each group to see how the objects are alike. I know my answer is correct because I drew a flower with six petals, just like the other flowers in the group. 1.4 A There should be a ring around the sock. (It is not the last thing you put on your foot; it is not worn outside.) B There should be a ring around the bicycle. (It only has 2 wheels.) 1 There should be an X on the fish. Sample answer: You can use the other objects to ride in the water. 2 There should be an X on the girl. Sample answer: All the other objects are animals. 3 Your student should draw a round, orange object. They are alike because of the shape and color. Mind Builder 1 There should be a ring around the letter f. 2 There should be a ring around the letter m. 3 There should be a ring around the letter u. 4 There should be a ring around the letter k. In all the groups, there is one letter, and all the other objects are numbers. Problem Solving Answers will vary. Make sure that your student s solution does not have blocks with the same shape or color next to each other. Cumulative Review 1 There should be a ring around the baseball. 2 There should be a ring around the fish. 3 There should be a ring around the red airplane; the blue airplane should be underlined. 1.5 A Yes; there should be a ring around 1 blue square and 1 yellow square. B no C Yes; there should be a ring around the first four objects (1 yellow circle, 1 red circle, and 2 blue circles). 1 Yes; there should be a ring around 1 blue square and 1 green square. 2 no 3 Yes; there should be a ring around the sun, the red heart, and the blue circle. 4 no Mixed Review 5 There should be rings around the pizza, the ice cream cone, and the apple. 1.6 A Your student should draw a blue square and a yellow square. B Your student should draw a red circle and a red square. C Your student should draw a green circle and a green square. 1 Your student should draw a red square and a blue square. 2 Your student should draw a large red circle and a small red circle. 3 Your student should draw a heart and a star. Tell About It 4 Sample answer: The sofa does not belong. I looked at all the objects to tell which one was different. The other three objects are all plants, and the sofa is not. 3

Math Textbook Answer Key Lessons 1 20 1.7 3 There should be a ring around the cat. 4 Your student should color the next square red, the following square blue, and the last square blue. Change of Pace Answers will vary. Cumulative Test 1 There should be a ring around the blue bead. 2 There should be a ring around the round red bead. 3 Your student should choose the table. 4 Your student should choose the pencil. 5 yes 6 no 7 The green cap should be marked. 8 The boots should be marked. CHAPTER 2 2.1 1 1; 2; 5 2 4; 2; 3 3 2; 5; 1 4 0; 5; 1 Extra 1 Your student should color the first square red and the next one blue. 2 Your student should color the next triangle green and the last one blue. 3 Your student should colore the next flower blue, the following one purple, and the last one red. 4 Your student should colore the next balloon red, the following one blue, and the last one green. 5 Your student should color the next car red, the following car red, and the last car purple. Project Your student should color 3 boxes in the solids row, 7 boxes in the stripes row, 2 boxes in the plaids row, 5 boxes in the letters row, and 4 boxes in the other row. Chapter 1 Review 1 There should be an X on the red shoe and a ring around the yellow shoe. 2 There should be a ring around the spatula. 3 Sample answer: The tree does not belong. I looked at the group to see how the objects are alike. I know my answer is correct because all the other objects are pieces of furniture. 4 Your student should color the next square red, the following square yellow, the next square red, and the last square yellow. 5 Your student should color the next circle green and the last circle red. Chapter 1 Test 1 There should be a ring around the yellow bird. 2 There should be a ring around the crayon. 2.2 1 6; 10 2 7; 8 3 6; 9; 10 4 9; 7; 8 2.3 A 5; five B 8; eight 1 4; four 2 0; zero 3 4 Check student s work. Mind Builder 5 A line should be drawn from the card to the group that has the numerals in it (3, 5, and 8). 2.4 A 4; 5 B 5; 4 1 2; 3; One more than 2 is 3. 2 6; 5; One less than 6 is 5. 3 6; 7 4 8; 7 2.5 A 4; 9 B 3; 1 1 6 2 4 3 9 4 3 5 9 6 6 7 3 8 9 9 4 10 7 Tell About It 11 Sample answer: You find 9 on the number line. Look at the number to the left. It is the number 8. 8 is one less than 9. 2.6 A 6 B 5 C 4, 5, 6 D 3, 4, 5 4

Math Textbook Answer Key Lessons 1 20 1 7 2 4 3 5 4 1 5 5, 6, 7 6 8, 9 7 3, 4, 5 8 8, 7 Mixed Review 9 6 10 8 2.7 1 2 bananas 2 10 pencils 3 5 dolls Mixed Review 4 2 5 1 6 7 Problem Solving 1 2 2 7 3 5 4 2 5 8 6 3 Cumulative Review 1 Your student should color the first circle green, the next yellow, and the last green. 2 Your student should color the first square red, the next yellow, and the last green. 3 Your student should color the first hexagon yellow and the last two red. 4 9 5 6 6 7 Check student s work. 2.8 A C 2.9 1 Paul 2 Dolly 3 Tom 4 Jack Extra 1 7 2 9 3 4 4 6 5 8 6 1 7 8 8 6 9 3 10 5 11 0 12 2 13 4 14 1 15 6 16 2 Project Check to make sure your student rings the correct number of objects. Chapter 2 Review 1 8 of the triangles should be colored. 2 5 3 8; 2; 9 4 5; 7 5 6 purple Chapter 2 Test 1 6 2 4 3 6; 2; 5 4 4; 8; 3 5 7 Change of Pace A odd B even C odd D even E odd F even G odd H even I odd J 2, 4, 6, 8 Cumulative Test 1 green 2 yellow 3 7 4 3 5 4 6 7 7 orange 8 fifth D F (purple) (yellow) (green) 1 3 4 fourth purple green yellow Mind Builder 1 2 3 5

Answer Keys Math Workbook Lessons 1 20 1 1 The first bear should be colored red. 2 The last bear should be colored green. 3 The tree should be colored red. 4 The wagon should be colored orange. 5 The bird should be colored yellow. 2 1 There should be rings around the baseball bat and baseball. 2 There should be rings around the ladybug and spider. 3 There should be rings around the cheese and the carrot. Enrichment 3 Answers will vary. The attribute blocks should be sorted correctly based on color and size. 4 1 Answers will vary. Your student should draw a yellow object. Sample answer: The object belongs because it is yellow. 2 Answers will vary. Sample answer: Lin put the balls in one group and the sports equipment in another. 3 The second object should have a ring around it. Answers will vary. Sample answer: The second object is a straight line, and the other objects are curved. Enrichment 8 1 3 Answers will vary. Your student should follow the pattern listed. 9 1 Your student should draw a triangle, a square, and a triangle. 2 Your student should draw a triangle, a circle, a circle, and a triangle. 3 Your student should draw a rectangle, a square, a rectangle, and a square. 4 Your student should draw a green square, a yellow square, a yellow square, and a green square. 5 Your student should color the square blue, the circle yellow, the square blue, and the square blue. 6 Your student should color the car blue, and the last car blue. 7 Your student should color the balloon green, the balloon red, and the last balloon blue. 8 Your student should color the flower purple, the flower red, the flower orange, and the last flower purple. Enrichment 10 1 2 Answers will vary. Your student should follow the pattern shown. 3 4 Answers will vary. Make sure that your student correctly labels and colors his patterns. 11 5 1 The piano should have an X on it; all other objects are chairs. 2 The seahorse should have an X on it; all other objects are shells. 3 The banana should have an X on it; all other objects are red. 4 The dollar bill should have an X on it; all other objects are coins. 5 Your student should draw a ball. All of the objects are used in sports. 6 Your student should draw a hat. All of the objects are worn on top of the head. 7 Your student should draw an article of clothing. All of the objects are clothes. 8 Your student should draw a sea animal. All of the objects live in the water. 1 2 Red Blue Small Big Enrichment 6 1 Answers will vary. Your student should draw something found in the air. 2 Answers will vary. Your student should draw something brown. 3 Answers will vary. Your student should draw a brown object found in the air. 3 Green Small 7 1 no 2 no 3 Yes; your student should ring the first three objects. 4 no 5 no 6 Yes; your student should ring the first three objects. 6

Math Workbook Answer Key Lessons 1 20 Review 12 1 Answers will vary. Your student should draw an insect. Sample answers: They are animals; they fly; they have wings. 2 Your student should have an X on the horse; remaining objects are fruits. 3 Your student should color the balloon blue, the balloon red, and the last balloon green. 4 Your student should color the triangle yellow, the triangle purple, the triangle purple, and the last triangle yellow. 13 1 2 Your student should write the numbers 2 and 5 correctly. 3 Your student should have a ring around one truck. 4 Your student should have a ring around 3 buses. 5 Your student should have a ring around 4 cars. 14 1 3 Your student should write the numbers 7, 8, and 10 correctly. 4 5 5 6 6 10 7 7 15 1 Fish Tank 1 2 3 4 5 6 7 8 9 10 20 1 2 2 5 3 8 4 7 5 3 6 1 7 2, 3, 4 8 5, 6, 7 9 7, 8, 9 10 3, 4, 5 11 6, 7, 8 12 3, 2, 1 Enrichment 21 1 3 2 7 3 6 4 2 5 1 6 4 22 1 There are 4 birds still in the tree. 2 Rob now has 10 toy cars. 3 Tara has 0 jacks. 4 Melvin painted 9 pictures. 23 1 There should be an X on the fish. 2 first 3 ninth 4 The bird should have a ring around it. 5 The elephant should be underlined. 6 third 7 4th, 5th 8 M A T H I S F U N. 24 1 Norma fed more rabbits. 2 James has fewer uncles. 3 The box has more eggs. 4 Jan sees more fish. Review 25 1 Your student should draw 8 objects in the box; 8 2 4; 8; 3 3 6; 2; 5 4 2; 1; 7 5 7 2 3 4 5 9 Answers will vary. Your student should draw the correct number of objects in each box. 16 1 Your student should draw a basketball in the box; 5 2 8; Your student should draw a baseball in the box; 9 3 3; Your student should mark an X on one butterfly; 2 4 7; Your student should mark an X on a balloon; 6 Enrichment 17 1 3 2 6 3 4 4 4 5 6 6 7 7 5 8 9 9 8 10 7 11 2 12 8 13 3 14 0 15 5 16 1 18 1 8 2 5 3 7 4 6 5 3 6 4 7 5 8 6 9 3 10 6 11 4 Enrichment 19 1 6 2 2 3 7 4 5 5 9 6 2 7