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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 394 · 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. 1.13 × 29 =
  2. 2.11 × 49 =
  3. 3.8 × 29 =
  4. 4.3 × 9 =
  5. 5.14 × 9 =
  6. 6.5 × 19 =
  7. 7.6 × 19 =
  8. 8.34 × 99 =
  9. 9.10 × 9 =
  10. 10.33 × 99 =
  11. 11.9 × 19 =
  12. 12.21 × 99 =
  13. 13.7 × 9 =
  14. 14.5 × 29 =
  15. 15.23 × 99 =
  16. 16.4 × 49 =
  17. 17.15 × 9 =
  18. 18.8 × 19 =
  19. 19.15 × 9 =
  20. 20.33 × 99 =
  21. 21.6 × 98 =
  22. 22.6 × 29 =
  23. 23.6 × 29 =
  24. 24.9 × 49 =
  25. 25.39 × 98 =
  26. 26.10 × 9 =
  27. 27.8 × 99 =
  28. 28.12 × 19 =
  29. 29.10 × 29 =
  30. 30.6 × 99 =
  31. 31.9 × 49 =
  32. 32.5 × 19 =
  33. 33.13 × 9 =
  34. 34.8 × 9 =
  35. 35.10 × 29 =
  36. 36.8 × 19 =
  37. 37.8 × 29 =
  38. 38.5 × 9 =
  39. 39.11 × 19 =
  40. 40.13 × 9 =

Answer key

  1. 377
  2. 539
  3. 232
  4. 27
  5. 126
  6. 95
  7. 114
  8. 3366
  9. 90
  10. 3267
  11. 171
  12. 2079
  13. 63
  14. 145
  15. 2277
  16. 196
  17. 135
  18. 152
  19. 135
  20. 3267
  21. 588
  22. 174
  23. 174
  24. 441
  25. 3822
  26. 90
  27. 792
  28. 228
  29. 290
  30. 594
  31. 441
  32. 95
  33. 117
  34. 72
  35. 290
  36. 152
  37. 232
  38. 45
  39. 209
  40. 117

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