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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 429 · 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 × 99 =
  2. 2.9 × 98 =
  3. 3.5 × 9 =
  4. 4.5 × 19 =
  5. 5.8 × 49 =
  6. 6.12 × 49 =
  7. 7.34 × 99 =
  8. 8.14 × 9 =
  9. 9.8 × 19 =
  10. 10.12 × 49 =
  11. 11.29 × 98 =
  12. 12.19 × 98 =
  13. 13.12 × 99 =
  14. 14.6 × 19 =
  15. 15.7 × 99 =
  16. 16.8 × 49 =
  17. 17.28 × 99 =
  18. 18.10 × 49 =
  19. 19.11 × 98 =
  20. 20.12 × 29 =
  21. 21.9 × 99 =
  22. 22.14 × 19 =
  23. 23.7 × 49 =
  24. 24.12 × 19 =
  25. 25.4 × 9 =
  26. 26.23 × 99 =
  27. 27.4 × 99 =
  28. 28.5 × 29 =
  29. 29.11 × 29 =
  30. 30.7 × 49 =
  31. 31.4 × 49 =
  32. 32.17 × 99 =
  33. 33.7 × 19 =
  34. 34.3 × 99 =
  35. 35.13 × 19 =
  36. 36.12 × 19 =
  37. 37.9 × 9 =
  38. 38.15 × 9 =
  39. 39.9 × 9 =
  40. 40.12 × 19 =

Answer key

  1. 1287
  2. 882
  3. 45
  4. 95
  5. 392
  6. 588
  7. 3366
  8. 126
  9. 152
  10. 588
  11. 2842
  12. 1862
  13. 1188
  14. 114
  15. 693
  16. 392
  17. 2772
  18. 490
  19. 1078
  20. 348
  21. 891
  22. 266
  23. 343
  24. 228
  25. 36
  26. 2277
  27. 396
  28. 145
  29. 319
  30. 343
  31. 196
  32. 1683
  33. 133
  34. 297
  35. 247
  36. 228
  37. 81
  38. 135
  39. 81
  40. 228

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