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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 554 · 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. 1.12 × 29 =
  2. 2.12 × 98 =
  3. 3.3 × 29 =
  4. 4.3 × 29 =
  5. 5.15 × 49 =
  6. 6.7 × 19 =
  7. 7.14 × 98 =
  8. 8.29 × 99 =
  9. 9.11 × 29 =
  10. 10.14 × 49 =
  11. 11.6 × 49 =
  12. 12.11 × 29 =
  13. 13.3 × 98 =
  14. 14.9 × 99 =
  15. 15.36 × 98 =
  16. 16.6 × 9 =
  17. 17.19 × 99 =
  18. 18.3 × 19 =
  19. 19.12 × 19 =
  20. 20.7 × 9 =
  21. 21.13 × 49 =
  22. 22.17 × 99 =
  23. 23.12 × 49 =
  24. 24.4 × 99 =
  25. 25.15 × 99 =
  26. 26.13 × 98 =
  27. 27.15 × 19 =
  28. 28.15 × 29 =
  29. 29.4 × 19 =
  30. 30.10 × 99 =
  31. 31.4 × 49 =
  32. 32.12 × 49 =
  33. 33.14 × 29 =
  34. 34.11 × 19 =
  35. 35.12 × 19 =
  36. 36.18 × 98 =
  37. 37.7 × 98 =
  38. 38.26 × 98 =
  39. 39.22 × 98 =
  40. 40.13 × 19 =

Answer key

  1. 348
  2. 1176
  3. 87
  4. 87
  5. 735
  6. 133
  7. 1372
  8. 2871
  9. 319
  10. 686
  11. 294
  12. 319
  13. 294
  14. 891
  15. 3528
  16. 54
  17. 1881
  18. 57
  19. 228
  20. 63
  21. 637
  22. 1683
  23. 588
  24. 396
  25. 1485
  26. 1274
  27. 285
  28. 435
  29. 76
  30. 990
  31. 196
  32. 588
  33. 406
  34. 209
  35. 228
  36. 1764
  37. 686
  38. 2548
  39. 2156
  40. 247

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