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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 245 · 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. 1.13 × 29 =
  2. 2.11 × 9 =
  3. 3.4 × 99 =
  4. 4.7 × 29 =
  5. 5.9 × 49 =
  6. 6.5 × 29 =
  7. 7.4 × 49 =
  8. 8.13 × 19 =
  9. 9.15 × 49 =
  10. 10.6 × 99 =
  11. 11.6 × 9 =
  12. 12.3 × 49 =
  13. 13.3 × 49 =
  14. 14.8 × 9 =
  15. 15.13 × 29 =
  16. 16.8 × 49 =
  17. 17.11 × 19 =
  18. 18.12 × 9 =
  19. 19.14 × 98 =
  20. 20.5 × 49 =
  21. 21.15 × 99 =
  22. 22.27 × 99 =
  23. 23.22 × 99 =
  24. 24.6 × 49 =
  25. 25.20 × 99 =
  26. 26.5 × 9 =
  27. 27.4 × 29 =
  28. 28.14 × 29 =
  29. 29.5 × 29 =
  30. 30.7 × 9 =
  31. 31.23 × 99 =
  32. 32.4 × 99 =
  33. 33.7 × 29 =
  34. 34.5 × 49 =
  35. 35.12 × 19 =
  36. 36.10 × 29 =
  37. 37.12 × 9 =
  38. 38.5 × 9 =
  39. 39.29 × 98 =
  40. 40.5 × 29 =

Answer key

  1. 377
  2. 99
  3. 396
  4. 203
  5. 441
  6. 145
  7. 196
  8. 247
  9. 735
  10. 594
  11. 54
  12. 147
  13. 147
  14. 72
  15. 377
  16. 392
  17. 209
  18. 108
  19. 1372
  20. 245
  21. 1485
  22. 2673
  23. 2178
  24. 294
  25. 1980
  26. 45
  27. 116
  28. 406
  29. 145
  30. 63
  31. 2277
  32. 396
  33. 203
  34. 245
  35. 228
  36. 290
  37. 108
  38. 45
  39. 2842
  40. 145

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