Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 714 · 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. 1.12 × 99 =
2. 2.8 × 99 =
3. 3.13 × 98 =
4. 4.14 × 19 =
5. 5.13 × 29 =
6. 6.13 × 9 =
7. 7.10 × 29 =
8. 8.7 × 98 =
9. 9.13 × 49 =
10. 10.9 × 29 =
11. 11.5 × 19 =
12. 12.3 × 49 =
13. 13.11 × 19 =
14. 14.13 × 49 =
15. 15.7 × 9 =
16. 16.6 × 49 =
17. 17.18 × 98 =
18. 18.7 × 19 =
19. 19.11 × 9 =
20. 20.14 × 9 =
21. 21.14 × 9 =
22. 22.4 × 98 =
23. 23.24 × 98 =
24. 24.4 × 49 =
25. 25.32 × 98 =
26. 26.15 × 29 =
27. 27.37 × 99 =
28. 28.10 × 29 =
29. 29.10 × 99 =
30. 30.7 × 98 =
31. 31.15 × 9 =
32. 32.18 × 98 =
33. 33.17 × 99 =
34. 34.22 × 98 =
35. 35.6 × 99 =
36. 36.19 × 99 =
37. 37.15 × 49 =
38. 38.3 × 19 =
39. 39.3 × 9 =
40. 40.8 × 98 =

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