Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 639 · 40 questions

How it works (Round and adjust): Round up: 49 is 50 − 1, 98 is 100 − 2. Multiply by the round number. Take away the number times the bit you added.

1. 1.5 × 9 =
2. 2.5 × 29 =
3. 3.14 × 49 =
4. 4.9 × 49 =
5. 5.4 × 99 =
6. 6.14 × 49 =
7. 7.15 × 49 =
8. 8.15 × 49 =
9. 9.10 × 98 =
10. 10.3 × 29 =
11. 11.8 × 98 =
12. 12.3 × 29 =
13. 13.10 × 19 =
14. 14.15 × 29 =
15. 15.32 × 98 =
16. 16.5 × 99 =
17. 17.12 × 19 =
18. 18.17 × 98 =
19. 19.15 × 29 =
20. 20.6 × 29 =
21. 21.10 × 29 =
22. 22.12 × 49 =
23. 23.9 × 9 =
24. 24.15 × 9 =
25. 25.12 × 29 =
26. 26.26 × 99 =
27. 27.11 × 99 =
28. 28.14 × 19 =
29. 29.6 × 29 =
30. 30.13 × 19 =
31. 31.13 × 29 =
32. 32.10 × 29 =
33. 33.13 × 98 =
34. 34.5 × 29 =
35. 35.4 × 29 =
36. 36.10 × 9 =
37. 37.13 × 49 =
38. 38.35 × 99 =
39. 39.17 × 99 =
40. 40.4 × 49 =

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