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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 70 · 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. 1.18 × 99 =
  2. 2.5 × 19 =
  3. 3.35 × 99 =
  4. 4.8 × 99 =
  5. 5.8 × 98 =
  6. 6.37 × 98 =
  7. 7.5 × 9 =
  8. 8.13 × 9 =
  9. 9.14 × 9 =
  10. 10.15 × 9 =
  11. 11.5 × 19 =
  12. 12.5 × 29 =
  13. 13.11 × 9 =
  14. 14.6 × 9 =
  15. 15.4 × 29 =
  16. 16.18 × 99 =
  17. 17.6 × 29 =
  18. 18.8 × 98 =
  19. 19.13 × 29 =
  20. 20.15 × 49 =
  21. 21.7 × 99 =
  22. 22.11 × 29 =
  23. 23.10 × 99 =
  24. 24.12 × 19 =
  25. 25.4 × 49 =
  26. 26.16 × 99 =
  27. 27.10 × 99 =
  28. 28.30 × 99 =
  29. 29.6 × 29 =
  30. 30.5 × 19 =
  31. 31.5 × 19 =
  32. 32.5 × 49 =
  33. 33.6 × 99 =
  34. 34.16 × 99 =
  35. 35.20 × 98 =
  36. 36.10 × 98 =
  37. 37.18 × 98 =
  38. 38.18 × 99 =
  39. 39.10 × 29 =
  40. 40.12 × 99 =

Answer key

  1. 1782
  2. 95
  3. 3465
  4. 792
  5. 784
  6. 3626
  7. 45
  8. 117
  9. 126
  10. 135
  11. 95
  12. 145
  13. 99
  14. 54
  15. 116
  16. 1782
  17. 174
  18. 784
  19. 377
  20. 735
  21. 693
  22. 319
  23. 990
  24. 228
  25. 196
  26. 1584
  27. 990
  28. 2970
  29. 174
  30. 95
  31. 95
  32. 245
  33. 594
  34. 1584
  35. 1960
  36. 980
  37. 1764
  38. 1782
  39. 290
  40. 1188

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