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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 258 · 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 × 49 =
  2. 2.13 × 19 =
  3. 3.7 × 9 =
  4. 4.6 × 19 =
  5. 5.10 × 99 =
  6. 6.10 × 49 =
  7. 7.15 × 9 =
  8. 8.11 × 99 =
  9. 9.8 × 9 =
  10. 10.14 × 49 =
  11. 11.17 × 99 =
  12. 12.11 × 99 =
  13. 13.9 × 49 =
  14. 14.7 × 19 =
  15. 15.6 × 19 =
  16. 16.17 × 99 =
  17. 17.33 × 99 =
  18. 18.12 × 29 =
  19. 19.12 × 49 =
  20. 20.40 × 98 =
  21. 21.11 × 19 =
  22. 22.15 × 49 =
  23. 23.14 × 9 =
  24. 24.15 × 9 =
  25. 25.6 × 19 =
  26. 26.11 × 29 =
  27. 27.12 × 98 =
  28. 28.7 × 9 =
  29. 29.36 × 98 =
  30. 30.5 × 9 =
  31. 31.4 × 98 =
  32. 32.14 × 19 =
  33. 33.15 × 49 =
  34. 34.6 × 49 =
  35. 35.3 × 19 =
  36. 36.4 × 19 =
  37. 37.9 × 29 =
  38. 38.25 × 98 =
  39. 39.3 × 29 =
  40. 40.13 × 99 =

Answer key

  1. 294
  2. 247
  3. 63
  4. 114
  5. 990
  6. 490
  7. 135
  8. 1089
  9. 72
  10. 686
  11. 1683
  12. 1089
  13. 441
  14. 133
  15. 114
  16. 1683
  17. 3267
  18. 348
  19. 588
  20. 3920
  21. 209
  22. 735
  23. 126
  24. 135
  25. 114
  26. 319
  27. 1176
  28. 63
  29. 3528
  30. 45
  31. 392
  32. 266
  33. 735
  34. 294
  35. 57
  36. 76
  37. 261
  38. 2450
  39. 87
  40. 1287

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