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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 889 · 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. 1.5 × 29 =
  2. 2.37 × 98 =
  3. 3.5 × 19 =
  4. 4.8 × 29 =
  5. 5.7 × 29 =
  6. 6.23 × 98 =
  7. 7.4 × 99 =
  8. 8.9 × 29 =
  9. 9.11 × 98 =
  10. 10.24 × 98 =
  11. 11.5 × 9 =
  12. 12.13 × 98 =
  13. 13.33 × 98 =
  14. 14.13 × 19 =
  15. 15.31 × 98 =
  16. 16.11 × 49 =
  17. 17.13 × 49 =
  18. 18.8 × 29 =
  19. 19.6 × 49 =
  20. 20.34 × 99 =
  21. 21.12 × 19 =
  22. 22.11 × 19 =
  23. 23.13 × 99 =
  24. 24.4 × 19 =
  25. 25.4 × 29 =
  26. 26.10 × 9 =
  27. 27.11 × 19 =
  28. 28.10 × 29 =
  29. 29.8 × 29 =
  30. 30.8 × 98 =
  31. 31.13 × 9 =
  32. 32.31 × 99 =
  33. 33.8 × 49 =
  34. 34.14 × 29 =
  35. 35.35 × 99 =
  36. 36.34 × 98 =
  37. 37.14 × 9 =
  38. 38.5 × 19 =
  39. 39.11 × 29 =
  40. 40.3 × 29 =

Answer key

  1. 145
  2. 3626
  3. 95
  4. 232
  5. 203
  6. 2254
  7. 396
  8. 261
  9. 1078
  10. 2352
  11. 45
  12. 1274
  13. 3234
  14. 247
  15. 3038
  16. 539
  17. 637
  18. 232
  19. 294
  20. 3366
  21. 228
  22. 209
  23. 1287
  24. 76
  25. 116
  26. 90
  27. 209
  28. 290
  29. 232
  30. 784
  31. 117
  32. 3069
  33. 392
  34. 406
  35. 3465
  36. 3332
  37. 126
  38. 95
  39. 319
  40. 87

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