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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 50 · 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. 1.11 × 19 =
  2. 2.14 × 9 =
  3. 3.7 × 19 =
  4. 4.27 × 98 =
  5. 5.7 × 9 =
  6. 6.6 × 19 =
  7. 7.6 × 99 =
  8. 8.18 × 99 =
  9. 9.13 × 49 =
  10. 10.14 × 49 =
  11. 11.10 × 99 =
  12. 12.14 × 9 =
  13. 13.7 × 9 =
  14. 14.8 × 9 =
  15. 15.5 × 29 =
  16. 16.4 × 19 =
  17. 17.4 × 49 =
  18. 18.10 × 19 =
  19. 19.10 × 49 =
  20. 20.10 × 49 =
  21. 21.19 × 98 =
  22. 22.8 × 29 =
  23. 23.36 × 99 =
  24. 24.7 × 19 =
  25. 25.3 × 9 =
  26. 26.11 × 49 =
  27. 27.4 × 19 =
  28. 28.6 × 49 =
  29. 29.5 × 98 =
  30. 30.35 × 98 =
  31. 31.7 × 19 =
  32. 32.34 × 99 =
  33. 33.12 × 99 =
  34. 34.15 × 9 =
  35. 35.13 × 9 =
  36. 36.24 × 98 =
  37. 37.14 × 19 =
  38. 38.38 × 98 =
  39. 39.36 × 99 =
  40. 40.10 × 9 =

Answer key

  1. 209
  2. 126
  3. 133
  4. 2646
  5. 63
  6. 114
  7. 594
  8. 1782
  9. 637
  10. 686
  11. 990
  12. 126
  13. 63
  14. 72
  15. 145
  16. 76
  17. 196
  18. 190
  19. 490
  20. 490
  21. 1862
  22. 232
  23. 3564
  24. 133
  25. 27
  26. 539
  27. 76
  28. 294
  29. 490
  30. 3430
  31. 133
  32. 3366
  33. 1188
  34. 135
  35. 117
  36. 2352
  37. 266
  38. 3724
  39. 3564
  40. 90

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