2. Vocabulary Standard form – A number written with one digit for each place value. 123 789 Word form – A number written in words. One hundred twenty-three thousand, seven hundred eighty-nine

3. Vocabulary Expanded form – A way to write numbers that shows the place value of each digit. 100 000 + 20 000 + 3 000 + 700 + 9 = 123 709

4. Review Numbers are divided into periods 690 492 Thousands Ones Periods are separated by commas.

5. Remember that each period has three place values within the period 6 9 0 4 9 2 ThousandsOnes TensHundredsOnesTensHundreds

6. Tip 690 492 Do not use “and” when writing whole numbers. The word “and” will be used when you are reading numbers with decimals. Six hundred and ninety-thousand, and four hundred and ninety-two. and four hundred and ninety-two.

7. How to write large numbers in word form 690 492 Thousand Ones Write the numbers as you would read them: 1 st Start with the period farthest to the left and write it in word form. 2 nd Continue with the period to the right and write it in word form. Continue this process till you reach the ones period. Six hundred ninety thousandfour hundred ninety two

8. Write this number 4 268 Four thousand, two hundred sixty-eight

9. Write this number 305 108 Three hundred five thousand, one hundred eight

10. Standard form is a number written with one digit for each place value 305 108 Three hundred five thousand, one hundred eight

11. What is the standard form of this number? 63 490 Sixty-three thousand, four hundred ninety.

12. What is the standard form of this number? Twenty-two thousand, two hundred 22 200

13. The expanded form of the number is used to show the place value of each digit 6 8236 823 6,000 + 800 + 20 + 3 The expanded form of is

14. What is the expanded form of? 973 104973 104 900 000 + 70 000 + 3 + 100 + 4

15. What is this number in expanded form? 7 021 500 7 000 + 20 000 + 1 + 500

16. What about decimals? When writing decimals in word form, use the word “and” to represent the decimal point. 5.2 five and two tenths

17. 1 5. 7 9 8 TENS ONES TENTHS HUNDREDTHS THOUSANDTHS

18. FIFTEEN 15.27 AND TWENTY SEVEN HUNDRETHS FIFTEEN AND TWENTY SEVEN HUNDRETHS

19. THIRTY 30.027 AND TWENTY SEVEN THOUSANDTHS THIRTY AND TWENTY SEVEN THOUSANDTHS

20. SEVEN HUNDRED FIFTY SIX 756.339 AND THREE HUNDRED THIRTY NINE THOUSANDTHS SEVEN HUNDRED FIFTY SIX AND THREE HUNDRED THIRTY NINE THOUSANDTHS

21. THREE HUNDRED 300.3 ANDTHREE TENTHS THREE HUNDRED AND THREE TENTHS

22. Let’s Review!

23. Standard form – A number written with one digit for each place value. Word form – A number written in words. Expanded form – A way to write numbers that shows the place value of each digit. When writing decimals in word form, use the word “and” to represent the decimal point.