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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 222 · 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. 1.6 × 19 =
  2. 2.3 × 9 =
  3. 3.8 × 99 =
  4. 4.5 × 29 =
  5. 5.8 × 19 =
  6. 6.5 × 9 =
  7. 7.12 × 9 =
  8. 8.3 × 49 =
  9. 9.7 × 29 =
  10. 10.5 × 29 =
  11. 11.3 × 19 =
  12. 12.11 × 49 =
  13. 13.7 × 9 =
  14. 14.10 × 19 =
  15. 15.5 × 49 =
  16. 16.10 × 99 =
  17. 17.3 × 49 =
  18. 18.7 × 9 =
  19. 19.13 × 9 =
  20. 20.4 × 49 =
  21. 21.12 × 29 =
  22. 22.15 × 49 =
  23. 23.5 × 49 =
  24. 24.13 × 49 =
  25. 25.11 × 9 =
  26. 26.12 × 98 =
  27. 27.7 × 29 =
  28. 28.12 × 49 =
  29. 29.14 × 19 =
  30. 30.3 × 98 =
  31. 31.6 × 49 =
  32. 32.17 × 99 =
  33. 33.14 × 99 =
  34. 34.35 × 99 =
  35. 35.13 × 19 =
  36. 36.13 × 98 =
  37. 37.3 × 99 =
  38. 38.13 × 9 =
  39. 39.14 × 49 =
  40. 40.10 × 99 =

Answer key

  1. 114
  2. 27
  3. 792
  4. 145
  5. 152
  6. 45
  7. 108
  8. 147
  9. 203
  10. 145
  11. 57
  12. 539
  13. 63
  14. 190
  15. 245
  16. 990
  17. 147
  18. 63
  19. 117
  20. 196
  21. 348
  22. 735
  23. 245
  24. 637
  25. 99
  26. 1176
  27. 203
  28. 588
  29. 266
  30. 294
  31. 294
  32. 1683
  33. 1386
  34. 3465
  35. 247
  36. 1274
  37. 297
  38. 117
  39. 686
  40. 990

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