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Early Elementary Number Sense Place Value and Number Combinations

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Early Elementary Number Sense Place Value and Number Combinations www.aplustutorsoft.com Page 1 of 134 This page is left blank intentionally. www.aplustutorsoft.com Page 2 of 134 Early Elementary Number Sense Place Value and Number Combinations WorkText Release 6 A+ TutorSoft Email: [email protected] www.aplustutorsoft.com www.aplustutorsoft.com Page 3 of 134 Copyright © 2011 A+ TutorSoft Inc., All Rights Reserved. No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical method, without the prior written permission of A+ TutorSoft Inc. Printed in the United States of America 2011, 2012 www.aplustutorsoft.com Page 4 of 134 ABOUT THE WORKTEXT, This book is designed to be used as a supplement to teach place value and number combinations to students in early elementary years. It contains core MATH concepts, Worksheets, and Worksheets Answer Key. Please use the space provided under each problem on the worksheets to show your work. We highly encourage you to use this space to list the step-by-step process your student follows in arriving at their solution. The main subject areas covered for this worktext are: 1.1 Identifying and Counting Numbers to 100 1.2 Identifying and Counting Numbers past 100 1.3 One More, One Less 1.4 Find 10 More 1.5 Number Types 1.6 Number Forms 1.7 Even and Odd Numbers 1.8 Introduction to Place Values 1.9 Identifying Ones and Tens in Numbers 1.10 Place Values for 3-digit Numbers 1.11 Number Combinations (up to 3 digits) 1.12 The Role of Zero 1.13 Place Value for Larger Numbers 1.14 Number Combinations for Larger Numbers 1.15 Defining and Grouping Whole Numbers www.aplustutorsoft.com Page 5 of 134 Acknowledgement: A+ TutorSoft would like to thank all the individuals who helped research, write, develop, edit, and launch our MATH Curriculum products. Countless weeks, years, and months have been devoted to the production of A+ TutorSoft Interactive MATH Curriculum and our printed texts; for this we thank everyone who contributed in making these products a reality. www.aplustutorsoft.com Page 6 of 134 TABLE OF CONTENTS Book Chapter 1.0 – Place Value and Number Combinations ……………………………….... 9 Chapter 1.1 Identifying and Counting Numbers to 100……………………………………. 10 Chapter 1.2 Identifying and Counting Numbers past 100…………… …………………… 14 Chapter 1.3 One More, One Less…………………………………………………………….. 18 Chapter 1.4 Find 10 More…………………………………..…………………………………. 25 Chapter 1.5 Number Types………………….……………………………………………….... 29 Chapter 1.6 Number Forms……………………….…..………………………………………. 31 Chapter 1.7 Even and Odd Numbers………………….…………………………………….. 33 Chapter 1.8 Introduction to Place Values………….………………………………………… 35 Chapter 1.9 Identifying Ones and Tens in Numbers……………………………………….. 39 Chapter 1.10 Place Values for 3-digit Numbers…………..………………………………… 45 Chapter 1.11 Number Combinations (up to 3 digits) …………..…………………………… 49 Chapter 1.12 The Role of Zero…………………..………………………..………….……… 55 Chapter 1.13 Place Value for Larger Numbers…………………………..………..…..…… 61 Chapter 1.14 Number Combinations for Larger Numbers………………………..……….. 64 Chapter 1.15 Defining and Grouping Whole Numbers……………….…………….……… 67 Worksheets Worksheet 1 – 1.1 Identifying and Counting Numbers to 100………………….…………. 71 Worksheet 2 – 1.2 Identifying and Counting Numbers past 100…………….……………. 76 Worksheet 3 – 1.3 One More, One Less …………….……………………….……………... 82 Worksheet 4 – 1.4 Find 10 More …………………………………………………………….. 84 Worksheet 5 – 1.5 Number Types ………….………………………………………..………. 86 Worksheet 6 – 1.6 Number Forms …………………..………………………………….….… 90 Worksheet 7 – 1.7 Even and Odd Numbers ……………….……………………………….. 94 Worksheet 8 – 1.8 Introduction to Place Values ……………………………………………. 98 Worksheet 9 – 1.9 Identifying Ones and Tens in Numbers…………………………..……. 101 Worksheet 10 – 1.10 Place Values for 3-digit Numbers ………………………………….…. 104 Worksheet 11 – 1.11 Number Combinations (up to 3 digits) ……….………………………. 107 Worksheet 12 – 1.12 The Role of Zero …………………………..…………..………….……. 111 Worksheet 13 – 1.13 Place Value for Larger Numbers ……………….……………..…..…. 114 Worksheet 14 – 1.14 Number Combinations for Larger Numbers ………..………..……… 117 Worksheet 15 – 1.15 Defining and Grouping Whole Numbers ……………………….……. 120 Worksheets Answer Key Worksheet 1 – 1.1 Identifying and Counting Numbers to 100………………….…………. 125 Worksheet 2 – 1.2 Identifying and Counting Numbers past 100…………….……………. 125 Worksheet 3 – 1.3 One More, One Less …………….……………………….……………... 126 Worksheet 4 – 1.4 Find 10 More …………………………………………………………….. 126 Worksheet 5 – 1.5 Number Types ………….………………………………………..………. 127 Worksheet 6 – 1.6 Number Forms …………………..………………………………….….… 127 Worksheet 7 – 1.7 Even and Odd Numbers ……………….……………………………….. 128 Worksheet 8 – 1.8 Introduction to Place Values ……………………………………………. 128 Worksheet 9 – 1.9 Identifying Ones and Tens in Numbers…………………………..……. 129 www.aplustutorsoft.com Page 7 of 134 Worksheet 10 – 1.10 Place Values for 3-digit Numbers ………………………………….…. 129 Worksheet 11 – 1.11 Number Combinations (up to 3 digits) ……….………………………. 129 Worksheet 12 – 1.12 The Role of Zero …………………………..…………..………….……. 131 Worksheet 13 – 1.13 Place Value for Larger Numbers ……………….……………..…..…. 131 Worksheet 14 – 1.14 Number Combinations for Larger Numbers ………..………..……… 131 Worksheet 15 – 1.15 Defining and Grouping Whole Numbers ……………………….……. 132 www.aplustutorsoft.com Page 8 of 134 1.0 Place Value and Number Combinations In this book we will discuss the following main topics: Identifying and Counting Numbers to 100 Identifying and Counting Numbers past 100 One More, One Less Find 10 More Number Types Number Forms Even and Odd Numbers Introduction to Place Values Identifying Ones and Tens in Numbers Place Values for 3-digit Numbers Number Combinations (up to 3 digits) The Role of Zero Place Value for Larger Numbers Number Combinations for Larger Numbers Defining and Grouping Whole Numbers www.aplustutorsoft.com Page 9 of 134 1 – 1 Identifying and Counting Numbers to 100 It is very important that you know how to count numbers. It is also important that you can identify the numbers and say their values. You have worked hard on learning your numbers from 1 through 20. Let’s count these numbers together. Please count along with me. So here we go, 1 2 3 4 5 6 7 8 9 10 one two three four five six seven Eight nine ten 11 12 13 14 15 16 17 18 19 20 eleven Twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty Nice work! Now we are going to learn the numbers that come after 20 all the way up to 100. There are a few patterns I am going to show you that will make counting to 100 easier. Let’s look at the next few numbers after 20 and you tell me when you see a pattern. The number after 20 is 21, then the next number is 22 and the next is 23. 21 22 23 twenty-one twenty-two twenty-three Do you see the pattern? What number do you think comes next? Yes, 24! To come up with all the numbers in the 20s, you just put the numbers 1 through 9 after the 2. Try counting from 21 to 29 with me. 21 22 23 24 25 26 27 28 29 twenty- twenty- twenty- twenty- twenty- twenty- twenty- twenty- twenty- one two three four five six seven eight nine Very good! Now we need to figure out the next number after 29. Well, the next number after 9 is 10, so let’s change the number 9 to a 0 and add the 1 to the 2, which makes the number 3. So, the number 29 becomes 30. Now, the 30s follow the same pattern that the 20s followed. Do you remember that pattern? If you said to put the numbers 1 through 9 after the 3, great job! Now, let’s count the numbers 30 through 39 together. 30 31 32 33 34 35 36 37 38 39 thirty- thirty- thirty- thirty- thirty- thirty- thirty- thirty- thirty- Thirty one two three four five six seven eight nine www.aplustutorsoft.com Page 10 of 134 Very good! You are really great at counting! Now we need to figure out the next number after 39. So, just like we did before, the number 10 comes after 9, so change the 9 to a 0 and add that 1 to the 3, which will make 40. So, what is the next number after 39? Yes, 40! Now, I can tell you that the 40s also follow the same pattern as the 20s and 30s, can you tell me that pattern? If you said to put the numbers 1 through 9 after the 4, then you are really getting the hang of this! Now, let’s count the numbers 40 through 49 together. 40 41 42 43 44 45 46 47 48 49 forty- forty- forty- forty- forty- forty- forty- forty- forty- forty one two three four five six seven eight nine Great job! Now it’s time to show you the second pattern that makes counting to 100 easier. So far we have counted to 20, then we counted all the numbers in the 30s and 40s. Do you see a pattern in just these three numbers: 20, 30, 40? Yes, the first number (also known as the ten’s place) counts by 1. So, it goes 20, 30, 40, 50, 60, 70, 80, 90 and finally 100. All the numbers in between repeat the first pattern I showed you, which is where the second number (also known as the one’s place) repeats the numbers 1 through 9 before letting the first number move up one. Let’s review all the numbers to 49 again. The numbers are shown here. 1 2 3 4 5 6 7 8 9 10 one Two three four Five six seven eight nine ten 11 12 13 14 15 16 17 18 19 20 eleven Twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen twenty 21 22 23 24 25 26 27 28 29 twenty- twenty- twenty- twenty- twenty- twenty- twenty- twenty- twenty- one two three four five six seven eight nine 30 31 32 33 34 35 36 37 38 39 thirty- thirty- thirty- thirty- thirty- thirty- thirty- thirty- thirty- thirty one two three four five six seven eight nine 40 41 42 43 44 45 46 47 48 49 forty- forty- forty- forty- forty- forty- forty- forty- forty- forty one two three four five six seven eight nine Can you guess what comes after 49? Yes, 50! Now let’s count the 50s using the pattern we have learned.
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