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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 443 · 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. 2.13 × 29 =
  3. 3.36 × 99 =
  4. 4.13 × 99 =
  5. 5.4 × 9 =
  6. 6.4 × 98 =
  7. 7.6 × 9 =
  8. 8.10 × 9 =
  9. 9.7 × 9 =
  10. 10.14 × 9 =
  11. 11.22 × 98 =
  12. 12.12 × 29 =
  13. 13.11 × 19 =
  14. 14.14 × 9 =
  15. 15.4 × 49 =
  16. 16.6 × 9 =
  17. 17.4 × 19 =
  18. 18.10 × 29 =
  19. 19.5 × 9 =
  20. 20.13 × 99 =
  21. 21.22 × 98 =
  22. 22.6 × 19 =
  23. 23.3 × 99 =
  24. 24.7 × 29 =
  25. 25.12 × 49 =
  26. 26.13 × 9 =
  27. 27.14 × 9 =
  28. 28.11 × 49 =
  29. 29.5 × 29 =
  30. 30.37 × 98 =
  31. 31.15 × 29 =
  32. 32.4 × 49 =
  33. 33.16 × 99 =
  34. 34.5 × 99 =
  35. 35.14 × 19 =
  36. 36.27 × 99 =
  37. 37.21 × 99 =
  38. 38.14 × 99 =
  39. 39.12 × 19 =
  40. 40.4 × 49 =

Answer key

  1. 171
  2. 377
  3. 3564
  4. 1287
  5. 36
  6. 392
  7. 54
  8. 90
  9. 63
  10. 126
  11. 2156
  12. 348
  13. 209
  14. 126
  15. 196
  16. 54
  17. 76
  18. 290
  19. 45
  20. 1287
  21. 2156
  22. 114
  23. 297
  24. 203
  25. 588
  26. 117
  27. 126
  28. 539
  29. 145
  30. 3626
  31. 435
  32. 196
  33. 1584
  34. 495
  35. 266
  36. 2673
  37. 2079
  38. 1386
  39. 228
  40. 196

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