1. UNIT 6 MATH REVIEW Miss Bowen 4 th Grade Math

2. DIVIDING BY 10S, 100S, AND 1,000S  42,000 / 6 = ?

3. DIVIDING BY 10S, 100S, AND 1,000S  42,000 / 6 = ?  42,000 / 6 = ___,000  42/ 6 = 7  42,000 / 6 = 7,000

4. DIVIDING BY 10S, 100S, AND 1,000S  3,600 / 4 = ?

5. DIVIDING BY 10S, 100S, AND 1,000S  3,600 / 4 = ?  3,600 / 4 = ___00  36 / 4 = 9  3,600 / 4 = 900

6. DIVIDING BY 10S, 100S, AND 1,000S  4,000 / 5 = ?

7. DIVIDING BY 10S, 100S, AND 1,000S  4,000 / 5 = ?  4,000 / 5 = ___00  40 / 5 = 8  4,000 / 5 = 800

8. DIVIDING BY 10S, 100S, AND 1,000S  630 / 9= ?

9. DIVIDING BY 10S, 100S, AND 1,000S  630 / 9= ?  630 / 9 = ___0  63 / 9 = 7  630 / 9= 70

10. DIVIDING BY 10S, 100S, AND 1,000S  490,000 / 7 = ?

11. DIVIDING BY 10S, 100S, AND 1,000S  490,000 / 7 = ?  490,000 / 7 = ___0,000  49 / 7 = 7  490,000 / 7 = 70,000

12. ESTIMATING QUOTIENTS  11,889 / 3 =

13. ESTIMATING QUOTIENTS  11,889 / 3 =  Underline the first two digits of the dividend  11,889 / 3 =  List multiples  0,3,6,9,12,15,18,21,24,27,30  Find the closest multiple. Change the first two digits to the multiple and all other digits to zero.  11  12 and 889  000 / new number 11,889  12,000  Solve the equation  12,000 / 3 = 4,000

14. ESTIMATING QUOTIENTS  21,119 / 8 = ?

15. ESTIMATING QUOTIENTS  21,119 / 8 = ?  Underline the first two digits of the dividend  21,119 / 8 = ?  List multiples  0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80  Find the closest multiple. Change the first two digits to the multiple and all other digits to zero.  21  24 and 119  000 / new number 21,119  24,000  Solve the equation  24,000 / 8 = 3,000

16. ESTIMATING QUOTIENTS  34,988 / 6 = ?

17. ESTIMATING QUOTIENTS  34,988 / 6 = ?  Underline the first two digits of the dividend  34,988 / 6 = ?  List multiples  0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60  Find the closest multiple. Change the first two digits to the multiple and all other digits to zero.  34  36 and 988  000 / new number 34,988  36,000  Solve the equation  36,000 / 6 = 6,000

18. ESTIMATING QUOTIENTS  312 / 5 = ?

19. ESTIMATING QUOTIENTS  312 / 5 = ?  Underline the first two digits of the dividend  312 / 5 = ?  List multiples  0, 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60  Find the closest multiple. Change the first two digits to the multiple and all other digits to zero.  31  30 and 2  0 / new number 312  300  Solve the equation  300 / 5 = 60

20. ESTIMATING QUOTIENTS  3,912 / 4 = ?

21. ESTIMATING QUOTIENTS  3,912 / 4 = ?  Underline the first two digits of the dividend  3,912 / 4 = ?  List multiples  0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40  Find the closest multiple. Change the first two digits to the multiple and all other digits to zero.  39  40 and 12  00 / new number 3,912  4,000  Solve the equation  4,000 / 4 = 1,000

22. USING MODELS TO SOLVE DIVISION PROBLEMS  554 / 4 = ?

23. USING MODELS TO SOLVE DIVISION PROBLEMS  554 / 4 = ?  How many hundreds can I take away?  554 – 400 = 154  How many tens can I take away?  154 – 120 = 34  How many ones can I take away?  34 – 32 = 2  What is my remainder?  2 left over  Find the sum of one group  100 + 30 + 8 = 138 r 2  554 / 4 = 138 r 2 100 + 30 +8

24. USING MODELS TO SOLVE DIVISION PROBLEMS  1,286 / 6 = ?

25. USING MODELS TO SOLVE DIVISION PROBLEMS  1,286 / 6 = ?  How many hundreds can I take away?  1,286 – 1,200 = 86  How many tens can I take away?  86 - 60 = 26  How many ones can I take away?  26 – 24 = 2  What is my remainder?  2 left over  Find the sum of one group  200 + 10 + 4 = 214 r 2  1,286 / 6 = 214 r 2 200 + 10 + 4

26. USING MODELS TO SOLVE DIVISION PROBLEMS  2,349 / 3 = ?

27. USING MODELS TO SOLVE DIVISION PROBLEMS  2,349 / 3 = ?  How many hundreds can I take away?  2,349 – 2,100 = 249  How many tens can I take away?  249 – 240 = 9  How many ones can I take away?  9 – 9 = 0  What is my remainder?  0 left over  Find the sum of one group  700 + 80 + 3 =783  2,349 / 3 = 783 700 + 80 + 3

28. USING MODELS TO SOLVE DIVISION PROBLEMS  493 / 8 = ?

29. USING MODELS TO SOLVE DIVISION PROBLEMS  493 / 8 = ?  How many hundreds can I take away?  493 – 0 = 493  How many tens can I take away?  493 – 480 = 13  How many ones can I take away?  13 – 8 = 5  What is my remainder?  5 left over  Find the sum of one group  60 + 1 = 61 r 5  493 / 8 = 61 r 5 60 +1

30. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  693 / 4 = ?

31. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  693 / 4 = ? 1 7 3 r 1 4 6 9 3 -4 ------ 2 9 - 2 8 -------------- 1 3 - 1 2 _________ 1

32. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  876 / 3 = ?

33. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  876 / 3 = ? 2 9 2 3 8 7 6 -6 ------ 2 7 - 2 7 -------------- 0 6 - 6 _________ 0

34. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  964 / 7 = ?

35. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  964 / 7 = ? 1 3 7 R 5 7 9 6 4 -7 ------ 2 6 - 2 1 -------------- 5 4 - 4 9 _________ 5

36. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  379 / 9 = ?

37. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  379 / 9 = ? x 4 2 R 1 9 3 7 9 -3 6 --------- 1 9 - 1 8 -------------- 1

38. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  709 / 7 = ?

39. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS  709 / 7 = ? 1 0 1 R 2 7 7 0 9 -7 ------ 0 0 - 0 0 -------------- 0 9 - 7 _________ 2

40. WORD PROBLEMS  Laura has 986 pennies. She puts an equal amount of pennies in 7 bowls. How many pennies are in each bowl? How many pennies are left over?

41. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS Understand986 pennies into 7 bowls # pennies are in each bowl? PlanPennies / # of bowls = # of pennies in each bowl Remainder = # left over Solve 1 4 0 R 6 7 9 8 6 - 7 ------ 2 8 - 2 8 ----------- 0 6 - 0 ------------ 6 140 pennies in each bowl with 6 left over Check140 x 7 = 980 + 6 (remainder) = 986

42. WORD PROBLEMS  Chris read a 1,182 page book in 6 days. If he always read the same number of pages, how many pages did he read each day?

43. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS Understand1,182 in 6 days number of pages each day? Plan1,182 Pages / 6 days = # of pages per day Solve x 1 9 7 6 1 1 8 2 - 6 ------ 5 8 - 5 4 ----------- 0 4 2 - 4 2 ------------ 0 Chris read 197 pages per night Check197 x 6 =1182

44. WORD PROBLEMS  The Phillies made $1,905 on hot dog sales in one night. If hot dogs cost $5 each, how many hot dogs were bought at the game?

45. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS Understandmade $1,905on hot dogs $5 each how many hot dogs were bought? Plan$1,905 total sales / $5 each = # of people who bought hot dogs Solve x 3 8 1 5 1 9 0 5 - 1 5 ------ 4 0 - 4 0 ----------- 0 0 5 - 5 ------------ 0 381 hot dogs were sold Check381 x $5 = $1,905

46. WORD PROBLEMS  There are 149 students going on a class trip. If each van can hold 9 students, how many vans are needed to get all of the students to the class trip?

47. USING PLACE VALUE TO SOLVE DIVISION PROBLEMS Understand149 students 9 students per van # of vans needed? Plan149 students / 9 per van = # of vans ** round remainder up so that all student shave a ride Solve x 1 6 r 5 9 1 4 9 - 9 ------ 5 9 - 5 4 ----------- 0 5 17 Vans needed Check17 x 9 = 153  (149 students/ one van will have 4 extra seats)