on BUILDING NUMBER SENSE

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1 C on BUILDING NUMBER SENSE

2 To the Student In FOCUS on Building Number Sense, Book C, you will read problems and answer questions. You will practice using a math strategy. It is called Building Number Sense. You will learn about the strategy on the Learn About pages. You will see a sample passage, sample questions, and sample answer choices on the Lesson Preview pages. Then you will practice using the strategy. Each lesson has a passage and five questions. After you finish reading the passage, answer the five questions. For the first four questions, fill in the correct answers right on the Answer Form on page 53. Or, you may fill in the correct answers right on the page. For the fifth question, show your work. Then write and explain your answer. Fill in the circle on the Answer Form to show that you have completed the fifth question. Use the Tracking Chart on page 47. Show when you have finished each lesson and the number of questions that you answered correctly. After each group of five lessons, complete a self-assessment. This will let you see how you are doing. So... FOCUS and enjoy! Acknowledgments Product Development Project Developer: Mazer Creative Services Curriculum Associates Project Editor: Pamela Halloran Curriculum Associates Project Designer: Susan Hawk Photo and Illustration Credits Pgs. 6, 10, 28, 32, 34, 36, 38, 2008 JupiterImages Corporation Shutterstock.com: cover zphoto, pg. 2 Andreas Gradin, pg. 8 inacio pires, pg. 12 netbritish, pg. 14 Raymond Kasprzak, pg. 16 Robert Adrian Hillman, pg. 18 Margot Petrowski, pg. 20 Sherri R. Camp, pg. 22 Laurie Barr, pg. 24 prism 68, pg. 26 Natalia Yakushkins, pg. 30 Photos by ryasick, pg. 37 Nikola Spasenoski, pg. 37 Ljupco Smokovski, pg. 40 Stacey Lynn Brown, pg. 42 Cheryl Casey, pg. 44 Jason Figert ISBN Curriculum Associates, Inc. North Billerica, MA No part of this book may be reproduced by any means without written permission from the publisher. All Rights Reserved. Printed in USA

3 Table of Contents Learn About... 2 Lesson Preview... 4 Lesson 1 Button Collectors Club... 6 Lesson 2 Picking Oranges... 8 Lesson 3 Favorite Color Lesson 4 A New School Lesson 5 Sticker of the Month Club Lesson 6 Mark Your Place Lesson 7 Math Contest Lesson 8 Quilting Class Lesson 9 Word Games Lesson 10 Recycling Cans Lesson 11 Crossword Puzzles Lesson 12 Summer Vacations Lesson 13 Pennies Count Lesson 14 Road Trip Lesson 15 A Tall Animal Lesson 16 Picture-Perfect Pets Lesson 17 Butterfly Garden Lesson 18 Map Maker Lesson 19 Talent Show Lesson 20 Baseball Card Collection Tracking Chart Self-Assessment 1, Lessons Self-Assessment 2, Lessons Self-Assessment 3, Lessons Self-Assessment 4, Lessons Self-Assessment 5, Lessons Answer Form... 53

Learn About Building Number Sense: Place Value, Even and Odd Numbers, and Writing Numbers Numbers are made up of digits. Each digit in a number has a place value.

4 Learn About Building Number Sense: Place Value, Even and Odd Numbers, and Writing Numbers Numbers are made up of digits. Each digit in a number has a place value. The value of a digit depends on its place in a number. The chart shows the place values of the digits in the number 3,527. The value of the 5 in this number is 500. thousands (1,000) hundreds (100) tens (10) ones (1) Numbers are either even or odd. Even numbers have the digits 0, 2, 4, 6, or 8 in the ones place. Odd numbers have the digits 1, 3, 5, 7, or 9 in the ones place. The number 3,527 is odd because it has a 7 in the ones place. The number 3,527 has 3 thousands, 5 hundreds, 2 tens, and 7 ones. Numbers can be written in different ways. Standard form: 3,527 Word form: three thousand, five hundred twenty-seven Expanded form: 3, Jenny has 276 pennies in her piggy bank. What is the value of the 7 in the number 276? The 7 is in the tens place. Seven tens is 70. The value of the 7 in 276 is 70. Remember: Each digit in a number has a place value. The value of a digit depends on its place in a number. Numbers are either even or odd. Even numbers have the digits 0, 2, 4, 6, or 8 in the ones place. Odd numbers have the digits 1, 3, 5, 7, or 9 in the ones place. Numbers can be written in standard form, in word form, or in expanded form. 2

5 Learn About Building Number Sense: Counting and Ordinal Numbers Listing numbers in order from least to greatest is called counting. Counting can help you find what number comes just before or just after another number. The counting list below shows that the number 9 comes just before 10 and just after 8. 7, 8, 9, 10, 11 Ordinal numbers are used to tell the place in order of something in a list or a row. The ordinal numbers are first, second, third, fourth, fifth, and so on. The red circle is the fourth circle in this row. start The table below displays the numbers and words for the numbers 1 through one first 2 two second 3 three third 4 four fourth 5 five fifth 6 six sixth 7 seven seventh 8 eight eighth 9 nine ninth 10 ten tenth Marlisa drew a row of shapes on her paper. In what place is the triangle? start The square is first, the circle is second, the rectangle is third, the diamond is fourth, and the triangle is fifth. The triangle is the fifth shape in the row. Remember: Listing numbers in order from least to greatest is called counting. Counting can help you find what number comes just before or just after another number. Ordinal numbers are used to tell the place in order of something in a list or a row. 3

Lesson 20 Read the passage. Then do Numbers 1 5. Baseball Card Collection Tony collects baseball cards. His mom and dad give him baseball cards. He also saves money to buy his own cards.

6 Lesson 20 Read the passage. Then do Numbers 1 5. Baseball Card Collection Tony collects baseball cards. His mom and dad give him baseball cards. He also saves money to buy his own cards. One of Tony s cards is signed by a catcher. Tony hopes to have more cards signed by baseball players. 1. Tony puts 7 baseball cards in a picture frame. In what place is the shaded baseball card? start 2. Tony has 2,507 baseball cards in all. What is the value of the 2 in 2,507? ,000 fourth sixth fifth seventh 44

7 3. The number of baseball cards Tony trades with his friends is an even number. Which could be the number of cards Tony trades with his friends? 25 cards 30 cards 41 cards 77 cards 4. Tony has 586 baseball cards of his favorite player. What number is 1 less than 586? Tony has 119 baseball cards of catchers. Write the number 119 in word form and in expanded form. Show your work in the space below. Remember to check your solution. Write your solution. Explain how you found your solution. 45

created by: The Curriculum Corner

created by: The Curriculum Corner I can understand fractions. I can show and understand that fractions represent equal parts of a whole, where the top number is the part and the bottom number is the total