1. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 1. 10.22 ÷ 14 2. 59.84 ÷ 32 3. 751.2 ÷ 25 4. 6271 ÷ 4

2. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 1. 10.22 ÷ 14

3. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 1. 10.22 ÷ 14 = 0.7 00.73 14)10.22 -98 42 -42 00 14, 28, 42, 56, 70, 84, 98

4. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 2. 59.84 ÷ 32

5. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 2. 59.84 ÷ 32 = 1.9 01.87 32)59.84 -32 278 -256 224 32, 64, 96, 128, 160, 192, 224, 256

6. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 3. 751.2 ÷ 25

7. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 3. 751.2 ÷ 25 = 30.0 030.04 25)751.20 -75 0120 25, 50, 75, 100, 125, 150, 175, 200, 225

8. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 4. 6271 ÷ 4

9. Mid-Chapter Check Find, round to the nearest tenth, if necessary. 4. 6271 ÷ 4 = 1567.8 1567.75 4)6271.0 -4 22 -20 27 -24 31 -28 30 -28 20 4,8,12,16,20,24,28,32,36,40,44,48,52,56,60

10. Flashcards

11. Wednesday, Oct 16 Lesson 3.8 Divide Decimals by Decimals

12. Objective: To understand how to estimate and divide decimals by decimals.

13. Divide Decimals by Decimals When dividing a decimal by a decimal, change the divisor to a whole number. To do this, move the decimal in both the divisor and dividend to the right. Then divide as before.

14. Divide Decimals by Decimals Find 1.71÷ 0.9 Estimate?

15. Divide Decimals by Decimals Find 1.71÷ 0.9 Estimate? 2 ÷ 1 = 2

16. Divide Decimals by Decimals Find 1.71÷ 0.9 Divide a decimal by a decimal. Step 1 – Place the numbers in the dividing bracket. 0.9)1.71

17. Divide Decimals by Decimals Find 1.71÷ 0.9 To Divide a decimal by a decimal Step 2 – Move the decimal point to the right in both numbers so the divisor is a whole number. 09.)17.1

18. Divide Decimals by Decimals Find 1.71÷ 0.9 = 1.9 To Divide a decimal by a decimal Step 3 – Divide as before. You can drop decimal point and the zero in front of the divisor. 1.9 9 )17.1 -9 81 -81 00

19. Divide Decimals by Decimals Find 2.64÷ 0.6 Estimate?

20. Divide Decimals by Decimals Find 2.64÷ 0.6 Estimate? 3 ÷ 1 = 3

21. Divide Decimals by Decimals Find 2.64÷ 0.6 Step 1 - ?

22. Divide Decimals by Decimals Find 2.64÷ 0.6 0.6)2.64 Step 2 - ?

23. Divide Decimals by Decimals Find 2.64÷ 0.6 0.6)2.64 = 06.)26.4 Step 3 - ?

24. Divide Decimals by Decimals Find 2.64÷ 0.6 = 4.4 4.4 0.6)2.64 = 06.)26.4 -24 024 -24 0 6, 12, 18, 24, 30, 36, 42, 48, 54, 60

25. Divide Decimals by Decimals Find 54.4 ÷ 1.7 (Do this on your own)

26. Divide Decimals by Decimals Find 54.4 ÷ 1.7 Estimate?

27. Divide Decimals by Decimals Find 54.4 ÷ 1.7 Estimate? 54 ÷ 2 = 27 Actual quotient?

28. Divide Decimals by Decimals Find 54.4 ÷ 1.7 = 32 32 1.7)54.4 = 17)544 -51 34 -34 0 17,34,51,68,85,102

29. Divide Decimals by Decimals Find 8.424 ÷ 0.36 (Do this on your own)

30. Divide Decimals by Decimals Find 8.424 ÷ 0.36 Estimate?

31. Divide Decimals by Decimals Find 8.424 ÷ 0.36 Estimate? Remember – you can not 8 ÷ 0.5 = 16 divide by 0. Actual quotient?

32. Divide Decimals by Decimals Find 8.424 ÷ 0.36 = 23.4 23.4 0.36)8.424 = 36)842.4 -72 122 -108 144 -144 000 36, 72, 108, 144, 180, 216, 252

33. Divide Decimals by Decimals Find 0.009 ÷ 0.18 Estimate?

34. Divide Decimals by Decimals Find 0.009 ÷ 0.18 Estimate? Since both numbers are close to zero, the estimate would be zero. Actual quotient?

35. Divide Decimals by Decimals Find 0.009 ÷ 0.18 = 0.05 000.05 0.18)0.009 = 18)000.90 -90 00 18,36, 54,72, 90, 108, 126,144,

36. Divide Decimals by Decimals Frank made $ 98.20 last week. Erin made $51.20 last week. How many times as much money did Frank make as Erin? Round to the nearest tenth. (Do this on your own)

37. Divide Decimals by Decimals Frank made $ 98.20 last week. Erin made $51.20 last week. How many times as much money did Frank make as Erin? Round to the nearest tenth. 1.9 as much 0001.91 51.20)98.20 = 5120)9820.00 -5120 47000 -46080 9200

38. Divide Decimals by Decimals Agenda Notes Homework – Homework Practice 3-8 Due Thursday, Oct 17 Must show all work. Chapter 3 Test –Friday, Oct 18 Help session – Thursday, Oct 17 2:15-3PM