Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 407 · 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 × 49 =
2. 2.7 × 98 =
3. 3.36 × 99 =
4. 4.34 × 98 =
5. 5.13 × 9 =
6. 6.10 × 19 =
7. 7.31 × 99 =
8. 8.4 × 9 =
9. 9.8 × 9 =
10. 10.7 × 19 =
11. 11.7 × 29 =
12. 12.6 × 49 =
13. 13.12 × 9 =
14. 14.4 × 98 =
15. 15.15 × 19 =
16. 16.13 × 9 =
17. 17.35 × 99 =
18. 18.15 × 49 =
19. 19.13 × 9 =
20. 20.11 × 98 =
21. 21.14 × 99 =
22. 22.9 × 19 =
23. 23.27 × 99 =
24. 24.15 × 9 =
25. 25.38 × 98 =
26. 26.10 × 29 =
27. 27.9 × 49 =
28. 28.10 × 99 =
29. 29.35 × 99 =
30. 30.8 × 19 =
31. 31.19 × 99 =
32. 32.4 × 98 =
33. 33.15 × 99 =
34. 34.11 × 19 =
35. 35.9 × 99 =
36. 36.16 × 99 =
37. 37.27 × 99 =
38. 38.11 × 49 =
39. 39.9 × 19 =
40. 40.6 × 98 =

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