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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 435 · 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. 1.5 × 19 =
  2. 2.6 × 29 =
  3. 3.10 × 9 =
  4. 4.10 × 49 =
  5. 5.9 × 29 =
  6. 6.9 × 19 =
  7. 7.13 × 29 =
  8. 8.3 × 19 =
  9. 9.7 × 9 =
  10. 10.12 × 29 =
  11. 11.11 × 9 =
  12. 12.8 × 9 =
  13. 13.15 × 9 =
  14. 14.11 × 29 =
  15. 15.9 × 49 =
  16. 16.13 × 9 =
  17. 17.10 × 19 =
  18. 18.12 × 19 =
  19. 19.16 × 99 =
  20. 20.8 × 29 =
  21. 21.6 × 98 =
  22. 22.9 × 29 =
  23. 23.3 × 19 =
  24. 24.8 × 99 =
  25. 25.23 × 98 =
  26. 26.21 × 99 =
  27. 27.10 × 98 =
  28. 28.4 × 9 =
  29. 29.12 × 9 =
  30. 30.28 × 99 =
  31. 31.14 × 19 =
  32. 32.3 × 9 =
  33. 33.25 × 98 =
  34. 34.8 × 9 =
  35. 35.11 × 19 =
  36. 36.9 × 98 =
  37. 37.4 × 99 =
  38. 38.18 × 99 =
  39. 39.15 × 19 =
  40. 40.3 × 49 =

Answer key

  1. 95
  2. 174
  3. 90
  4. 490
  5. 261
  6. 171
  7. 377
  8. 57
  9. 63
  10. 348
  11. 99
  12. 72
  13. 135
  14. 319
  15. 441
  16. 117
  17. 190
  18. 228
  19. 1584
  20. 232
  21. 588
  22. 261
  23. 57
  24. 792
  25. 2254
  26. 2079
  27. 980
  28. 36
  29. 108
  30. 2772
  31. 266
  32. 27
  33. 2450
  34. 72
  35. 209
  36. 882
  37. 396
  38. 1782
  39. 285
  40. 147

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