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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 608 · 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. 1.11 × 19 =
  2. 2.15 × 49 =
  3. 3.10 × 49 =
  4. 4.35 × 98 =
  5. 5.8 × 9 =
  6. 6.5 × 19 =
  7. 7.9 × 9 =
  8. 8.3 × 98 =
  9. 9.5 × 29 =
  10. 10.5 × 9 =
  11. 11.4 × 19 =
  12. 12.8 × 9 =
  13. 13.11 × 9 =
  14. 14.7 × 29 =
  15. 15.4 × 19 =
  16. 16.38 × 98 =
  17. 17.13 × 49 =
  18. 18.35 × 99 =
  19. 19.8 × 9 =
  20. 20.31 × 98 =
  21. 21.6 × 29 =
  22. 22.4 × 29 =
  23. 23.11 × 98 =
  24. 24.6 × 29 =
  25. 25.5 × 9 =
  26. 26.13 × 9 =
  27. 27.22 × 98 =
  28. 28.6 × 49 =
  29. 29.9 × 19 =
  30. 30.28 × 99 =
  31. 31.12 × 19 =
  32. 32.3 × 98 =
  33. 33.13 × 9 =
  34. 34.6 × 19 =
  35. 35.7 × 49 =
  36. 36.7 × 19 =
  37. 37.26 × 98 =
  38. 38.4 × 29 =
  39. 39.6 × 99 =
  40. 40.5 × 29 =

Answer key

  1. 209
  2. 735
  3. 490
  4. 3430
  5. 72
  6. 95
  7. 81
  8. 294
  9. 145
  10. 45
  11. 76
  12. 72
  13. 99
  14. 203
  15. 76
  16. 3724
  17. 637
  18. 3465
  19. 72
  20. 3038
  21. 174
  22. 116
  23. 1078
  24. 174
  25. 45
  26. 117
  27. 2156
  28. 294
  29. 171
  30. 2772
  31. 228
  32. 294
  33. 117
  34. 114
  35. 343
  36. 133
  37. 2548
  38. 116
  39. 594
  40. 145

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