Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 810 · 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. 1.20 × 99 =
2. 2.5 × 99 =
3. 3.15 × 19 =
4. 4.12 × 19 =
5. 5.24 × 98 =
6. 6.6 × 19 =
7. 7.11 × 19 =
8. 8.3 × 9 =
9. 9.11 × 29 =
10. 10.13 × 99 =
11. 11.27 × 98 =
12. 12.12 × 9 =
13. 13.13 × 49 =
14. 14.9 × 29 =
15. 15.6 × 98 =
16. 16.6 × 9 =
17. 17.10 × 99 =
18. 18.3 × 98 =
19. 19.10 × 49 =
20. 20.27 × 98 =
21. 21.24 × 99 =
22. 22.17 × 98 =
23. 23.11 × 99 =
24. 24.10 × 9 =
25. 25.26 × 99 =
26. 26.38 × 99 =
27. 27.15 × 19 =
28. 28.6 × 49 =
29. 29.15 × 98 =
30. 30.14 × 99 =
31. 31.5 × 99 =
32. 32.31 × 99 =
33. 33.22 × 99 =
34. 34.29 × 98 =
35. 35.9 × 98 =
36. 36.5 × 49 =
37. 37.14 × 19 =
38. 38.10 × 49 =
39. 39.30 × 99 =
40. 40.9 × 98 =

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