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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 178 · 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 × 98 =
  2. 2.14 × 98 =
  3. 3.11 × 49 =
  4. 4.12 × 9 =
  5. 5.12 × 99 =
  6. 6.11 × 29 =
  7. 7.6 × 19 =
  8. 8.12 × 9 =
  9. 9.6 × 19 =
  10. 10.4 × 19 =
  11. 11.13 × 9 =
  12. 12.4 × 19 =
  13. 13.13 × 99 =
  14. 14.16 × 99 =
  15. 15.11 × 9 =
  16. 16.13 × 98 =
  17. 17.15 × 29 =
  18. 18.12 × 99 =
  19. 19.15 × 9 =
  20. 20.4 × 9 =
  21. 21.6 × 19 =
  22. 22.14 × 49 =
  23. 23.27 × 99 =
  24. 24.11 × 19 =
  25. 25.8 × 49 =
  26. 26.4 × 29 =
  27. 27.11 × 19 =
  28. 28.13 × 9 =
  29. 29.36 × 98 =
  30. 30.9 × 19 =
  31. 31.5 × 9 =
  32. 32.9 × 98 =
  33. 33.4 × 49 =
  34. 34.5 × 49 =
  35. 35.15 × 98 =
  36. 36.6 × 29 =
  37. 37.6 × 19 =
  38. 38.11 × 29 =
  39. 39.3 × 19 =
  40. 40.12 × 49 =

Answer key

  1. 588
  2. 1372
  3. 539
  4. 108
  5. 1188
  6. 319
  7. 114
  8. 108
  9. 114
  10. 76
  11. 117
  12. 76
  13. 1287
  14. 1584
  15. 99
  16. 1274
  17. 435
  18. 1188
  19. 135
  20. 36
  21. 114
  22. 686
  23. 2673
  24. 209
  25. 392
  26. 116
  27. 209
  28. 117
  29. 3528
  30. 171
  31. 45
  32. 882
  33. 196
  34. 245
  35. 1470
  36. 174
  37. 114
  38. 319
  39. 57
  40. 588

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