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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 68 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.5 × 49 =
  2. 2.5 × 9 =
  3. 3.15 × 49 =
  4. 4.14 × 99 =
  5. 5.17 × 98 =
  6. 6.12 × 9 =
  7. 7.25 × 99 =
  8. 8.5 × 99 =
  9. 9.40 × 99 =
  10. 10.39 × 99 =
  11. 11.6 × 19 =
  12. 12.11 × 49 =
  13. 13.10 × 29 =
  14. 14.13 × 29 =
  15. 15.13 × 9 =
  16. 16.11 × 9 =
  17. 17.12 × 9 =
  18. 18.34 × 99 =
  19. 19.4 × 49 =
  20. 20.4 × 19 =
  21. 21.8 × 49 =
  22. 22.14 × 19 =
  23. 23.6 × 9 =
  24. 24.11 × 98 =
  25. 25.29 × 98 =
  26. 26.11 × 19 =
  27. 27.24 × 98 =
  28. 28.10 × 99 =
  29. 29.13 × 29 =
  30. 30.23 × 98 =
  31. 31.3 × 49 =
  32. 32.5 × 49 =
  33. 33.14 × 9 =
  34. 34.11 × 49 =
  35. 35.15 × 9 =
  36. 36.6 × 49 =
  37. 37.7 × 49 =
  38. 38.10 × 19 =
  39. 39.12 × 19 =
  40. 40.40 × 98 =

Answer key

  1. 245
  2. 45
  3. 735
  4. 1386
  5. 1666
  6. 108
  7. 2475
  8. 495
  9. 3960
  10. 3861
  11. 114
  12. 539
  13. 290
  14. 377
  15. 117
  16. 99
  17. 108
  18. 3366
  19. 196
  20. 76
  21. 392
  22. 266
  23. 54
  24. 1078
  25. 2842
  26. 209
  27. 2352
  28. 990
  29. 377
  30. 2254
  31. 147
  32. 245
  33. 126
  34. 539
  35. 135
  36. 294
  37. 343
  38. 190
  39. 228
  40. 3920

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