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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 327 · 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. 1.3 × 19 =
  2. 2.4 × 29 =
  3. 3.39 × 99 =
  4. 4.36 × 98 =
  5. 5.11 × 49 =
  6. 6.4 × 9 =
  7. 7.8 × 29 =
  8. 8.11 × 9 =
  9. 9.11 × 29 =
  10. 10.7 × 19 =
  11. 11.28 × 99 =
  12. 12.10 × 29 =
  13. 13.35 × 98 =
  14. 14.9 × 29 =
  15. 15.6 × 29 =
  16. 16.10 × 49 =
  17. 17.7 × 29 =
  18. 18.8 × 19 =
  19. 19.3 × 99 =
  20. 20.11 × 19 =
  21. 21.13 × 19 =
  22. 22.21 × 98 =
  23. 23.6 × 49 =
  24. 24.6 × 19 =
  25. 25.12 × 99 =
  26. 26.8 × 99 =
  27. 27.32 × 98 =
  28. 28.37 × 99 =
  29. 29.8 × 9 =
  30. 30.6 × 29 =
  31. 31.33 × 98 =
  32. 32.4 × 19 =
  33. 33.10 × 19 =
  34. 34.16 × 99 =
  35. 35.12 × 29 =
  36. 36.12 × 19 =
  37. 37.12 × 49 =
  38. 38.5 × 19 =
  39. 39.7 × 9 =
  40. 40.5 × 9 =

Answer key

  1. 57
  2. 116
  3. 3861
  4. 3528
  5. 539
  6. 36
  7. 232
  8. 99
  9. 319
  10. 133
  11. 2772
  12. 290
  13. 3430
  14. 261
  15. 174
  16. 490
  17. 203
  18. 152
  19. 297
  20. 209
  21. 247
  22. 2058
  23. 294
  24. 114
  25. 1188
  26. 792
  27. 3136
  28. 3663
  29. 72
  30. 174
  31. 3234
  32. 76
  33. 190
  34. 1584
  35. 348
  36. 228
  37. 588
  38. 95
  39. 63
  40. 45

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