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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 292 · 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 × 29 =
  2. 2.35 × 99 =
  3. 3.7 × 19 =
  4. 4.15 × 9 =
  5. 5.3 × 29 =
  6. 6.10 × 19 =
  7. 7.4 × 98 =
  8. 8.11 × 19 =
  9. 9.8 × 9 =
  10. 10.14 × 9 =
  11. 11.4 × 19 =
  12. 12.3 × 49 =
  13. 13.12 × 9 =
  14. 14.9 × 9 =
  15. 15.9 × 49 =
  16. 16.12 × 19 =
  17. 17.11 × 19 =
  18. 18.6 × 49 =
  19. 19.7 × 29 =
  20. 20.3 × 19 =
  21. 21.28 × 98 =
  22. 22.14 × 98 =
  23. 23.14 × 49 =
  24. 24.4 × 19 =
  25. 25.6 × 49 =
  26. 26.3 × 19 =
  27. 27.7 × 9 =
  28. 28.10 × 9 =
  29. 29.26 × 99 =
  30. 30.13 × 19 =
  31. 31.5 × 29 =
  32. 32.11 × 9 =
  33. 33.15 × 19 =
  34. 34.30 × 98 =
  35. 35.5 × 49 =
  36. 36.9 × 29 =
  37. 37.24 × 99 =
  38. 38.8 × 98 =
  39. 39.8 × 49 =
  40. 40.9 × 19 =

Answer key

  1. 174
  2. 3465
  3. 133
  4. 135
  5. 87
  6. 190
  7. 392
  8. 209
  9. 72
  10. 126
  11. 76
  12. 147
  13. 108
  14. 81
  15. 441
  16. 228
  17. 209
  18. 294
  19. 203
  20. 57
  21. 2744
  22. 1372
  23. 686
  24. 76
  25. 294
  26. 57
  27. 63
  28. 90
  29. 2574
  30. 247
  31. 145
  32. 99
  33. 285
  34. 2940
  35. 245
  36. 261
  37. 2376
  38. 784
  39. 392
  40. 171

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