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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 136 · 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 × 29 =
  2. 2.6 × 19 =
  3. 3.9 × 49 =
  4. 4.4 × 29 =
  5. 5.13 × 9 =
  6. 6.5 × 19 =
  7. 7.17 × 99 =
  8. 8.10 × 9 =
  9. 9.4 × 49 =
  10. 10.21 × 99 =
  11. 11.40 × 99 =
  12. 12.3 × 29 =
  13. 13.7 × 49 =
  14. 14.12 × 49 =
  15. 15.12 × 99 =
  16. 16.13 × 29 =
  17. 17.19 × 99 =
  18. 18.3 × 49 =
  19. 19.6 × 49 =
  20. 20.12 × 29 =
  21. 21.13 × 19 =
  22. 22.12 × 98 =
  23. 23.23 × 98 =
  24. 24.12 × 98 =
  25. 25.21 × 98 =
  26. 26.4 × 29 =
  27. 27.9 × 49 =
  28. 28.36 × 98 =
  29. 29.10 × 49 =
  30. 30.7 × 9 =
  31. 31.27 × 98 =
  32. 32.9 × 19 =
  33. 33.15 × 19 =
  34. 34.10 × 9 =
  35. 35.9 × 19 =
  36. 36.8 × 19 =
  37. 37.3 × 49 =
  38. 38.11 × 49 =
  39. 39.3 × 9 =
  40. 40.9 × 98 =

Answer key

  1. 87
  2. 114
  3. 441
  4. 116
  5. 117
  6. 95
  7. 1683
  8. 90
  9. 196
  10. 2079
  11. 3960
  12. 87
  13. 343
  14. 588
  15. 1188
  16. 377
  17. 1881
  18. 147
  19. 294
  20. 348
  21. 247
  22. 1176
  23. 2254
  24. 1176
  25. 2058
  26. 116
  27. 441
  28. 3528
  29. 490
  30. 63
  31. 2646
  32. 171
  33. 285
  34. 90
  35. 171
  36. 152
  37. 147
  38. 539
  39. 27
  40. 882

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