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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 729 · 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. 1.4 × 29 =
  2. 2.6 × 19 =
  3. 3.4 × 99 =
  4. 4.10 × 19 =
  5. 5.8 × 29 =
  6. 6.11 × 19 =
  7. 7.3 × 49 =
  8. 8.7 × 49 =
  9. 9.29 × 99 =
  10. 10.10 × 29 =
  11. 11.12 × 29 =
  12. 12.12 × 9 =
  13. 13.7 × 98 =
  14. 14.13 × 19 =
  15. 15.40 × 99 =
  16. 16.10 × 49 =
  17. 17.5 × 9 =
  18. 18.14 × 9 =
  19. 19.6 × 98 =
  20. 20.5 × 19 =
  21. 21.5 × 9 =
  22. 22.23 × 98 =
  23. 23.3 × 49 =
  24. 24.7 × 19 =
  25. 25.15 × 9 =
  26. 26.10 × 29 =
  27. 27.7 × 9 =
  28. 28.38 × 99 =
  29. 29.6 × 9 =
  30. 30.11 × 19 =
  31. 31.7 × 49 =
  32. 32.6 × 9 =
  33. 33.10 × 49 =
  34. 34.5 × 99 =
  35. 35.13 × 9 =
  36. 36.12 × 19 =
  37. 37.12 × 99 =
  38. 38.15 × 9 =
  39. 39.14 × 9 =
  40. 40.9 × 19 =

Answer key

  1. 116
  2. 114
  3. 396
  4. 190
  5. 232
  6. 209
  7. 147
  8. 343
  9. 2871
  10. 290
  11. 348
  12. 108
  13. 686
  14. 247
  15. 3960
  16. 490
  17. 45
  18. 126
  19. 588
  20. 95
  21. 45
  22. 2254
  23. 147
  24. 133
  25. 135
  26. 290
  27. 63
  28. 3762
  29. 54
  30. 209
  31. 343
  32. 54
  33. 490
  34. 495
  35. 117
  36. 228
  37. 1188
  38. 135
  39. 126
  40. 171

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