1. 5-2 Estimating
Quotients
Math Notes
Number Sense 1.0

2. What you’re learning today...

3. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.

4. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.
You’ve used compatible numbers with adding/
subtracting...

5. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.
You’ve used compatible numbers with adding/
subtracting...
3,456 ÷ 5 = ?

6. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.
You’ve used compatible numbers with adding/
subtracting...
3,456 ÷ 5 = ?

7. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.
You’ve used compatible numbers with adding/
subtracting...
3,456 ÷ 5 = ?

8. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.
You’ve used compatible numbers with adding/
subtracting...
3,456 ÷ 5 = ?

9. What you’re learning today...
Number Sense 1.0 - Computing with positive
integers.
You’ve used compatible numbers with adding/
subtracting...
3,456 ÷ 5 = ?
3,000 ÷ 5 = 600

10. Compatible Numbers

11. Compatible Numbers
6400 ÷ 7 =

12. Compatible Numbers
6400 ÷ 7 =

13. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400 ÷ 7 =

14. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400 ÷ 7 =

15. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400 ÷ 7 =
63

16. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400 ÷ 7 =
6300

17. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400
6300 ÷ 7 =

18. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400
6300 ÷ 7 = 9

19. Compatible Numbers
7, 14, 21, 28, 35, 42,
49, 56, 63, 70, 77
6400
6300 ÷ 7 = 900

20. Compatible Numbers

21. Compatible Numbers
4128 ÷ 8 =

22. Compatible Numbers
4128 ÷ 8 =

23. Compatible Numbers
8, 16, 24, 32, 40, 48
4128 ÷ 8 =

24. Compatible Numbers
8, 16, 24, 32, 40, 48
4128 ÷ 8 =

25. Compatible Numbers
8, 16, 24, 32, 40, 48
4128 ÷ 8 =
40

26. Compatible Numbers
8, 16, 24, 32, 40, 48
4128 ÷ 8 =
4000

27. Compatible Numbers
8, 16, 24, 32, 40, 48
4128
4000 ÷ 8 =

28. Compatible Numbers
8, 16, 24, 32, 40, 48
4128
4000 ÷ 8 = 5

29. Compatible Numbers
8, 16, 24, 32, 40, 48
4128
4000 ÷ 8 = 500

30. Compatible Numbers

31. Compatible Numbers
152 ÷ 18 =

32. Compatible Numbers
Looking at BOTH
dividend & divisor
152 ÷ 18 =

33. Compatible Numbers
Looking at BOTH
dividend & divisor
152 ÷ 18 =

34. Compatible Numbers
Looking at BOTH
dividend & divisor
152 ÷ 18 =

35. Compatible Numbers
Looking at BOTH
dividend & divisor
152 ÷ 20 =

36. Compatible Numbers
Looking at BOTH
dividend & divisor 20, 40, 60, 80, 100,
120, 140, 160
152 ÷ 20 =

37. Compatible Numbers
Looking at BOTH
dividend & divisor 20, 40, 60, 80, 100,
120, 140, 160
152 ÷ 20 =
160

38. Compatible Numbers
Looking at BOTH
dividend & divisor 20, 40, 60, 80, 100,
120, 140, 160
152
160 ÷ 20 =

39. Compatible Numbers
Looking at BOTH
dividend & divisor 20, 40, 60, 80, 100,
120, 140, 160
152
160 ÷ 20 = 8

40. Compatible Numbers

41. Compatible Numbers
8176 ÷ 23 =

42. Compatible Numbers
Looking at BOTH
dividend & divisor
8176 ÷ 23 =

43. Compatible Numbers
Looking at BOTH
dividend & divisor
8176 ÷ 23 =

44. Compatible Numbers
Looking at BOTH
dividend & divisor
8176 ÷ 23 =

45. Compatible Numbers
Looking at BOTH
dividend & divisor
8176 ÷ 20 =

46. Compatible Numbers
Looking at BOTH
dividend & divisor
20, 40, 60, 80
8176 ÷ 20 =

47. Compatible Numbers
Looking at BOTH
dividend & divisor
20, 40, 60, 80
8176 ÷ 20 =
8000

48. Compatible Numbers
Looking at BOTH
dividend & divisor
20, 40, 60, 80
8176
8000 ÷ 20 =

49. Compatible Numbers
Looking at BOTH
dividend & divisor
20, 40, 60, 80
8176
8000 ÷ 20 = 400