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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 249 · 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. 1.10 × 49 =
  2. 2.37 × 99 =
  3. 3.6 × 49 =
  4. 4.3 × 19 =
  5. 5.8 × 29 =
  6. 6.6 × 19 =
  7. 7.36 × 98 =
  8. 8.13 × 19 =
  9. 9.8 × 99 =
  10. 10.7 × 99 =
  11. 11.9 × 19 =
  12. 12.14 × 9 =
  13. 13.6 × 98 =
  14. 14.12 × 29 =
  15. 15.15 × 19 =
  16. 16.4 × 29 =
  17. 17.13 × 99 =
  18. 18.22 × 98 =
  19. 19.11 × 29 =
  20. 20.14 × 99 =
  21. 21.11 × 29 =
  22. 22.10 × 19 =
  23. 23.3 × 98 =
  24. 24.7 × 19 =
  25. 25.10 × 49 =
  26. 26.34 × 99 =
  27. 27.6 × 29 =
  28. 28.15 × 49 =
  29. 29.11 × 49 =
  30. 30.12 × 9 =
  31. 31.34 × 98 =
  32. 32.6 × 19 =
  33. 33.3 × 19 =
  34. 34.4 × 49 =
  35. 35.9 × 19 =
  36. 36.7 × 49 =
  37. 37.20 × 98 =
  38. 38.15 × 19 =
  39. 39.4 × 9 =
  40. 40.12 × 29 =

Answer key

  1. 490
  2. 3663
  3. 294
  4. 57
  5. 232
  6. 114
  7. 3528
  8. 247
  9. 792
  10. 693
  11. 171
  12. 126
  13. 588
  14. 348
  15. 285
  16. 116
  17. 1287
  18. 2156
  19. 319
  20. 1386
  21. 319
  22. 190
  23. 294
  24. 133
  25. 490
  26. 3366
  27. 174
  28. 735
  29. 539
  30. 108
  31. 3332
  32. 114
  33. 57
  34. 196
  35. 171
  36. 343
  37. 1960
  38. 285
  39. 36
  40. 348

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