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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 392 · 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. 1.14 × 49 =
  2. 2.14 × 29 =
  3. 3.13 × 49 =
  4. 4.20 × 99 =
  5. 5.38 × 98 =
  6. 6.12 × 99 =
  7. 7.33 × 98 =
  8. 8.3 × 9 =
  9. 9.19 × 98 =
  10. 10.13 × 19 =
  11. 11.12 × 98 =
  12. 12.14 × 98 =
  13. 13.14 × 19 =
  14. 14.21 × 99 =
  15. 15.3 × 29 =
  16. 16.12 × 29 =
  17. 17.10 × 29 =
  18. 18.9 × 19 =
  19. 19.19 × 99 =
  20. 20.14 × 49 =
  21. 21.20 × 98 =
  22. 22.6 × 29 =
  23. 23.8 × 29 =
  24. 24.3 × 9 =
  25. 25.4 × 49 =
  26. 26.25 × 98 =
  27. 27.19 × 98 =
  28. 28.10 × 49 =
  29. 29.11 × 49 =
  30. 30.5 × 49 =
  31. 31.10 × 49 =
  32. 32.8 × 9 =
  33. 33.5 × 98 =
  34. 34.6 × 9 =
  35. 35.13 × 19 =
  36. 36.27 × 99 =
  37. 37.3 × 99 =
  38. 38.12 × 19 =
  39. 39.10 × 9 =
  40. 40.8 × 9 =

Answer key

  1. 686
  2. 406
  3. 637
  4. 1980
  5. 3724
  6. 1188
  7. 3234
  8. 27
  9. 1862
  10. 247
  11. 1176
  12. 1372
  13. 266
  14. 2079
  15. 87
  16. 348
  17. 290
  18. 171
  19. 1881
  20. 686
  21. 1960
  22. 174
  23. 232
  24. 27
  25. 196
  26. 2450
  27. 1862
  28. 490
  29. 539
  30. 245
  31. 490
  32. 72
  33. 490
  34. 54
  35. 247
  36. 2673
  37. 297
  38. 228
  39. 90
  40. 72

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