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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 593 · 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. 1.9 × 19 =
  2. 2.8 × 9 =
  3. 3.27 × 98 =
  4. 4.7 × 29 =
  5. 5.15 × 19 =
  6. 6.14 × 19 =
  7. 7.10 × 29 =
  8. 8.8 × 99 =
  9. 9.6 × 49 =
  10. 10.9 × 29 =
  11. 11.5 × 9 =
  12. 12.12 × 29 =
  13. 13.13 × 49 =
  14. 14.6 × 9 =
  15. 15.8 × 98 =
  16. 16.6 × 9 =
  17. 17.12 × 19 =
  18. 18.8 × 29 =
  19. 19.6 × 19 =
  20. 20.9 × 29 =
  21. 21.4 × 49 =
  22. 22.4 × 29 =
  23. 23.12 × 19 =
  24. 24.15 × 49 =
  25. 25.4 × 29 =
  26. 26.14 × 99 =
  27. 27.14 × 99 =
  28. 28.10 × 99 =
  29. 29.13 × 29 =
  30. 30.12 × 9 =
  31. 31.25 × 99 =
  32. 32.8 × 9 =
  33. 33.6 × 49 =
  34. 34.3 × 19 =
  35. 35.4 × 9 =
  36. 36.10 × 98 =
  37. 37.6 × 29 =
  38. 38.12 × 19 =
  39. 39.10 × 49 =
  40. 40.15 × 19 =

Answer key

  1. 171
  2. 72
  3. 2646
  4. 203
  5. 285
  6. 266
  7. 290
  8. 792
  9. 294
  10. 261
  11. 45
  12. 348
  13. 637
  14. 54
  15. 784
  16. 54
  17. 228
  18. 232
  19. 114
  20. 261
  21. 196
  22. 116
  23. 228
  24. 735
  25. 116
  26. 1386
  27. 1386
  28. 990
  29. 377
  30. 108
  31. 2475
  32. 72
  33. 294
  34. 57
  35. 36
  36. 980
  37. 174
  38. 228
  39. 490
  40. 285

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