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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 748 · 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. 1.6 × 49 =
  2. 2.10 × 99 =
  3. 3.13 × 19 =
  4. 4.15 × 99 =
  5. 5.7 × 19 =
  6. 6.9 × 19 =
  7. 7.6 × 49 =
  8. 8.3 × 19 =
  9. 9.14 × 9 =
  10. 10.13 × 29 =
  11. 11.3 × 29 =
  12. 12.6 × 29 =
  13. 13.4 × 9 =
  14. 14.15 × 49 =
  15. 15.15 × 9 =
  16. 16.3 × 29 =
  17. 17.9 × 29 =
  18. 18.14 × 49 =
  19. 19.4 × 29 =
  20. 20.12 × 19 =
  21. 21.9 × 29 =
  22. 22.12 × 99 =
  23. 23.14 × 49 =
  24. 24.6 × 29 =
  25. 25.3 × 99 =
  26. 26.8 × 19 =
  27. 27.21 × 98 =
  28. 28.4 × 9 =
  29. 29.10 × 98 =
  30. 30.15 × 49 =
  31. 31.10 × 19 =
  32. 32.37 × 99 =
  33. 33.6 × 49 =
  34. 34.15 × 19 =
  35. 35.13 × 9 =
  36. 36.15 × 49 =
  37. 37.3 × 9 =
  38. 38.15 × 19 =
  39. 39.12 × 29 =
  40. 40.5 × 49 =

Answer key

  1. 294
  2. 990
  3. 247
  4. 1485
  5. 133
  6. 171
  7. 294
  8. 57
  9. 126
  10. 377
  11. 87
  12. 174
  13. 36
  14. 735
  15. 135
  16. 87
  17. 261
  18. 686
  19. 116
  20. 228
  21. 261
  22. 1188
  23. 686
  24. 174
  25. 297
  26. 152
  27. 2058
  28. 36
  29. 980
  30. 735
  31. 190
  32. 3663
  33. 294
  34. 285
  35. 117
  36. 735
  37. 27
  38. 285
  39. 348
  40. 245

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