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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 188 · 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 × 49 =
  2. 2.10 × 98 =
  3. 3.11 × 98 =
  4. 4.6 × 49 =
  5. 5.11 × 29 =
  6. 6.12 × 9 =
  7. 7.12 × 29 =
  8. 8.7 × 19 =
  9. 9.4 × 49 =
  10. 10.22 × 98 =
  11. 11.8 × 19 =
  12. 12.40 × 99 =
  13. 13.5 × 49 =
  14. 14.11 × 9 =
  15. 15.5 × 19 =
  16. 16.13 × 49 =
  17. 17.13 × 29 =
  18. 18.7 × 9 =
  19. 19.6 × 9 =
  20. 20.11 × 49 =
  21. 21.14 × 19 =
  22. 22.9 × 29 =
  23. 23.22 × 99 =
  24. 24.13 × 29 =
  25. 25.3 × 19 =
  26. 26.15 × 99 =
  27. 27.4 × 9 =
  28. 28.4 × 99 =
  29. 29.12 × 19 =
  30. 30.6 × 19 =
  31. 31.5 × 29 =
  32. 32.5 × 9 =
  33. 33.7 × 19 =
  34. 34.15 × 98 =
  35. 35.13 × 49 =
  36. 36.6 × 19 =
  37. 37.40 × 99 =
  38. 38.4 × 29 =
  39. 39.4 × 49 =
  40. 40.14 × 9 =

Answer key

  1. 588
  2. 980
  3. 1078
  4. 294
  5. 319
  6. 108
  7. 348
  8. 133
  9. 196
  10. 2156
  11. 152
  12. 3960
  13. 245
  14. 99
  15. 95
  16. 637
  17. 377
  18. 63
  19. 54
  20. 539
  21. 266
  22. 261
  23. 2178
  24. 377
  25. 57
  26. 1485
  27. 36
  28. 396
  29. 228
  30. 114
  31. 145
  32. 45
  33. 133
  34. 1470
  35. 637
  36. 114
  37. 3960
  38. 116
  39. 196
  40. 126

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