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**Place value & Expanded form**

CHAPTER 1 Place value & Expanded form BY M.Veerasakdi Leotsopha

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Warm up ! Guess Your number ! Guess My number !

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**Objectives 1. Be able to read numbers to hundred thousand**

2. Be able to identify the place value of each digit in numbers up to one hundred thousand 3. Know how to write a number in word form

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**Vocabulary 1. Recognise = to identify / prove**

Chapter 1: Number up to 100,000 1. Recognise = to identify / prove 2. Place value = the position of a single digit in a whole number 3. Ten Thousands = place value of digit ten thousand 4. Thousands = place value of digit thousand 5. Hundreds = place value of digit hundred 6. Tens = place value of digit ten 7. Ones = place value of digit one 8. Numerals = symbols or mark used to represent a number 9. Number name = express numbers in words 10. Expanded form = the sum of each digit

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**11. Comparing = to describe something as similar **

12. Ordering = the way in which things are arranged 13. Ascending order = arrange from smallest to largest 14. Descending order = arrange from largest to smallest 15. Successor = the number that comes just after 16. Predecessor = the number that comes just before 17. Rounding off = to estimate 18. Estimation = approximation 19. Sum of = to combine two things or more 20. Difference of = left over from subtraction 21. Wrap up = conclusion

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**What digit is in the hundred’s place?**

7 4 3, 9 8 2 9

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**What is the value of the underlined digit?**

7 4 3, 9 8 2 Ten thousand

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**What is the value of the underlined digit?**

7 4 3,9 8 2 Thousand

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**What is the value of the underlined digit?**

74 3,9 8 2 Hundred thousand

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**What is the value of the underlined digit?**

7 4 3, 9 8 2 Hundred

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**What is the value of the underlined digit?**

7 4 3, 9 8 2 Ten

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**What is the value of the underlined digit?**

7 4 3, 9 8 2 One

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**Place Value Page 7 A. Write in words the place value ……….**

43,102 = Hundreds , = Tens 49,325 = Hundreds , = Tens 41,978 = Thousands , = Ones 89,032 = Ten thousands , = Thousands B. Answer the following questions………. 1. Hundreds , Thousands , thousands , 4. Hundred Thousands

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**Page 7 C. Recognize the place value of numbers ……….**

What are the place value of each digit in 37,985 a) The digit 5 is in the ones place. b) “_____” 8 “_____” tens “_____” c) “_____” 9 “_____” hundreds “_____” d) “_____” 7 “_____” thousands “_____” e) “_____” 3 “_____” ten thousands“_____” 2. What is the value of each digits in 87,563………. Digit “ 3 ” = 3 ones , b) ) Digit “ 6 ” = 6 tens Digit “ 5 ” = 5 hundreds d) Digit “ 7 ” = 7 thousands e) Digit “ 8 ” = 8 ten thousands

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**Page 7 - 8 3. What do the digits in 45,289 stand for ?**

Digit “ 9 ” stands for 9 ones , b) ) Digit “ 8 ” stands for 8 tens Digit “ 2 ” stands for 2 hundreds d) Digit “ 5 ” stands for 5 thousands e) Digit “ 4 ” stands for 4 ten thousands 4. Fill in each blanks with the correct answer. a) In 34,902 the digit 9 is in the hundreds place. b) In 78,234 the digit 7 is in the ten hundreds place. c) The 56,291 , the digit 6 is in the thousands place. d) The 85,920 , the digit 8 is in the ten thousands place.

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5. In 87,213 Page 8 The place value of the digit “ 2 ” is hundreds place . The value of the digit “ 2 ” is 2 hundreds. The place value of the digit “ 2 ” is hundreds place . The value of the digit “ 2 ” is 2 hundreds. 6. In 25,734 The place value of the digit “ 5 ” is thousands place . The value of the digit “ 5 ” is 5 thousands . 7. In 73,906 The place value of the digit “ 6 ” is ones place . The value of the digit “ 6 ” is ones .

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Page 8 8. In 56,923 The place value of the digit “ 5 ” is ten thousands place . The value of the digit “ 5 ” is 5 ten thousands . 9. In 93,021 The place value of the digit “ 9 ” is ten thousands place . The value of the digit “ 9 ” is 9 ten thousands .

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**Expanded form Page 9 Ex.1.4 A. Fill in the blanks.**

1. 7 hundred thousands ten thousands thousands + 9 hundreds + 2 tens ones. x 100, x 10, x 1, x x , , ,

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**Page 9-10 B. Write in the expanded form.**

300, , , 800, , , 300, , , 80, , C. Match the following. 1) c , 2) d , 3) f , 4) e , 5) a , 6) b

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Worksheet 1 Worksheet 2 Math Racing Games

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