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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 6 · 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. 1.7 × 19 =
  2. 2.37 × 99 =
  3. 3.3 × 49 =
  4. 4.22 × 98 =
  5. 5.37 × 99 =
  6. 6.12 × 49 =
  7. 7.30 × 99 =
  8. 8.3 × 98 =
  9. 9.36 × 98 =
  10. 10.14 × 29 =
  11. 11.12 × 19 =
  12. 12.3 × 49 =
  13. 13.3 × 19 =
  14. 14.31 × 99 =
  15. 15.11 × 9 =
  16. 16.4 × 29 =
  17. 17.5 × 9 =
  18. 18.4 × 49 =
  19. 19.35 × 99 =
  20. 20.9 × 9 =
  21. 21.11 × 19 =
  22. 22.15 × 49 =
  23. 23.11 × 29 =
  24. 24.25 × 99 =
  25. 25.15 × 29 =
  26. 26.14 × 49 =
  27. 27.4 × 19 =
  28. 28.20 × 98 =
  29. 29.4 × 99 =
  30. 30.6 × 9 =
  31. 31.3 × 29 =
  32. 32.8 × 29 =
  33. 33.33 × 99 =
  34. 34.8 × 9 =
  35. 35.11 × 9 =
  36. 36.12 × 49 =
  37. 37.3 × 29 =
  38. 38.10 × 49 =
  39. 39.4 × 9 =
  40. 40.4 × 29 =

Answer key

  1. 133
  2. 3663
  3. 147
  4. 2156
  5. 3663
  6. 588
  7. 2970
  8. 294
  9. 3528
  10. 406
  11. 228
  12. 147
  13. 57
  14. 3069
  15. 99
  16. 116
  17. 45
  18. 196
  19. 3465
  20. 81
  21. 209
  22. 735
  23. 319
  24. 2475
  25. 435
  26. 686
  27. 76
  28. 1960
  29. 396
  30. 54
  31. 87
  32. 232
  33. 3267
  34. 72
  35. 99
  36. 588
  37. 87
  38. 490
  39. 36
  40. 116

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