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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 318 · 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 × 9 =
  2. 2.13 × 19 =
  3. 3.3 × 19 =
  4. 4.7 × 99 =
  5. 5.3 × 29 =
  6. 6.12 × 98 =
  7. 7.7 × 19 =
  8. 8.32 × 99 =
  9. 9.10 × 49 =
  10. 10.5 × 19 =
  11. 11.10 × 19 =
  12. 12.15 × 29 =
  13. 13.5 × 9 =
  14. 14.12 × 98 =
  15. 15.15 × 49 =
  16. 16.5 × 19 =
  17. 17.22 × 99 =
  18. 18.27 × 99 =
  19. 19.5 × 19 =
  20. 20.14 × 9 =
  21. 21.4 × 98 =
  22. 22.27 × 98 =
  23. 23.24 × 98 =
  24. 24.5 × 9 =
  25. 25.5 × 49 =
  26. 26.4 × 29 =
  27. 27.20 × 98 =
  28. 28.20 × 98 =
  29. 29.14 × 29 =
  30. 30.11 × 29 =
  31. 31.6 × 49 =
  32. 32.11 × 49 =
  33. 33.13 × 19 =
  34. 34.4 × 49 =
  35. 35.14 × 29 =
  36. 36.9 × 9 =
  37. 37.31 × 98 =
  38. 38.5 × 19 =
  39. 39.34 × 99 =
  40. 40.14 × 9 =

Answer key

  1. 63
  2. 247
  3. 57
  4. 693
  5. 87
  6. 1176
  7. 133
  8. 3168
  9. 490
  10. 95
  11. 190
  12. 435
  13. 45
  14. 1176
  15. 735
  16. 95
  17. 2178
  18. 2673
  19. 95
  20. 126
  21. 392
  22. 2646
  23. 2352
  24. 45
  25. 245
  26. 116
  27. 1960
  28. 1960
  29. 406
  30. 319
  31. 294
  32. 539
  33. 247
  34. 196
  35. 406
  36. 81
  37. 3038
  38. 95
  39. 3366
  40. 126

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