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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 309 · 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 × 19 =
  2. 2.10 × 9 =
  3. 3.10 × 29 =
  4. 4.31 × 99 =
  5. 5.8 × 9 =
  6. 6.28 × 98 =
  7. 7.13 × 19 =
  8. 8.10 × 9 =
  9. 9.14 × 49 =
  10. 10.5 × 98 =
  11. 11.8 × 98 =
  12. 12.11 × 9 =
  13. 13.7 × 9 =
  14. 14.11 × 98 =
  15. 15.15 × 49 =
  16. 16.12 × 29 =
  17. 17.5 × 49 =
  18. 18.11 × 19 =
  19. 19.18 × 98 =
  20. 20.12 × 98 =
  21. 21.24 × 98 =
  22. 22.14 × 19 =
  23. 23.23 × 99 =
  24. 24.14 × 9 =
  25. 25.3 × 98 =
  26. 26.13 × 19 =
  27. 27.7 × 9 =
  28. 28.15 × 29 =
  29. 29.4 × 19 =
  30. 30.9 × 49 =
  31. 31.31 × 98 =
  32. 32.13 × 9 =
  33. 33.5 × 9 =
  34. 34.8 × 29 =
  35. 35.5 × 99 =
  36. 36.3 × 9 =
  37. 37.5 × 19 =
  38. 38.9 × 98 =
  39. 39.15 × 49 =
  40. 40.13 × 29 =

Answer key

  1. 114
  2. 90
  3. 290
  4. 3069
  5. 72
  6. 2744
  7. 247
  8. 90
  9. 686
  10. 490
  11. 784
  12. 99
  13. 63
  14. 1078
  15. 735
  16. 348
  17. 245
  18. 209
  19. 1764
  20. 1176
  21. 2352
  22. 266
  23. 2277
  24. 126
  25. 294
  26. 247
  27. 63
  28. 435
  29. 76
  30. 441
  31. 3038
  32. 117
  33. 45
  34. 232
  35. 495
  36. 27
  37. 95
  38. 882
  39. 735
  40. 377

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