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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 633 · 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. 1.14 × 19 =
  2. 2.7 × 49 =
  3. 3.31 × 99 =
  4. 4.10 × 9 =
  5. 5.14 × 19 =
  6. 6.13 × 19 =
  7. 7.8 × 9 =
  8. 8.14 × 49 =
  9. 9.13 × 29 =
  10. 10.5 × 29 =
  11. 11.12 × 49 =
  12. 12.10 × 49 =
  13. 13.36 × 99 =
  14. 14.12 × 29 =
  15. 15.8 × 49 =
  16. 16.11 × 98 =
  17. 17.4 × 29 =
  18. 18.15 × 49 =
  19. 19.3 × 29 =
  20. 20.7 × 49 =
  21. 21.22 × 98 =
  22. 22.4 × 19 =
  23. 23.11 × 29 =
  24. 24.15 × 49 =
  25. 25.11 × 19 =
  26. 26.8 × 29 =
  27. 27.31 × 98 =
  28. 28.17 × 99 =
  29. 29.34 × 98 =
  30. 30.16 × 99 =
  31. 31.14 × 98 =
  32. 32.11 × 29 =
  33. 33.27 × 99 =
  34. 34.13 × 9 =
  35. 35.4 × 19 =
  36. 36.11 × 98 =
  37. 37.5 × 19 =
  38. 38.11 × 98 =
  39. 39.9 × 9 =
  40. 40.4 × 29 =

Answer key

  1. 266
  2. 343
  3. 3069
  4. 90
  5. 266
  6. 247
  7. 72
  8. 686
  9. 377
  10. 145
  11. 588
  12. 490
  13. 3564
  14. 348
  15. 392
  16. 1078
  17. 116
  18. 735
  19. 87
  20. 343
  21. 2156
  22. 76
  23. 319
  24. 735
  25. 209
  26. 232
  27. 3038
  28. 1683
  29. 3332
  30. 1584
  31. 1372
  32. 319
  33. 2673
  34. 117
  35. 76
  36. 1078
  37. 95
  38. 1078
  39. 81
  40. 116

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