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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 454 · 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 × 98 =
  2. 2.12 × 9 =
  3. 3.13 × 9 =
  4. 4.7 × 99 =
  5. 5.29 × 99 =
  6. 6.11 × 99 =
  7. 7.6 × 9 =
  8. 8.13 × 19 =
  9. 9.8 × 29 =
  10. 10.5 × 9 =
  11. 11.13 × 9 =
  12. 12.11 × 9 =
  13. 13.7 × 9 =
  14. 14.9 × 29 =
  15. 15.7 × 19 =
  16. 16.4 × 29 =
  17. 17.23 × 98 =
  18. 18.8 × 9 =
  19. 19.28 × 98 =
  20. 20.10 × 98 =
  21. 21.11 × 99 =
  22. 22.25 × 98 =
  23. 23.10 × 29 =
  24. 24.13 × 9 =
  25. 25.5 × 49 =
  26. 26.13 × 29 =
  27. 27.22 × 99 =
  28. 28.36 × 98 =
  29. 29.6 × 49 =
  30. 30.8 × 49 =
  31. 31.12 × 9 =
  32. 32.11 × 19 =
  33. 33.6 × 98 =
  34. 34.4 × 49 =
  35. 35.9 × 19 =
  36. 36.40 × 99 =
  37. 37.9 × 19 =
  38. 38.5 × 98 =
  39. 39.9 × 19 =
  40. 40.32 × 99 =

Answer key

  1. 1176
  2. 108
  3. 117
  4. 693
  5. 2871
  6. 1089
  7. 54
  8. 247
  9. 232
  10. 45
  11. 117
  12. 99
  13. 63
  14. 261
  15. 133
  16. 116
  17. 2254
  18. 72
  19. 2744
  20. 980
  21. 1089
  22. 2450
  23. 290
  24. 117
  25. 245
  26. 377
  27. 2178
  28. 3528
  29. 294
  30. 392
  31. 108
  32. 209
  33. 588
  34. 196
  35. 171
  36. 3960
  37. 171
  38. 490
  39. 171
  40. 3168

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