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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 31 · 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. 1.12 × 99 =
  2. 2.32 × 98 =
  3. 3.3 × 9 =
  4. 4.9 × 98 =
  5. 5.6 × 19 =
  6. 6.11 × 99 =
  7. 7.4 × 19 =
  8. 8.19 × 98 =
  9. 9.8 × 29 =
  10. 10.12 × 19 =
  11. 11.15 × 49 =
  12. 12.3 × 9 =
  13. 13.7 × 99 =
  14. 14.34 × 99 =
  15. 15.13 × 99 =
  16. 16.29 × 98 =
  17. 17.4 × 19 =
  18. 18.11 × 9 =
  19. 19.6 × 98 =
  20. 20.9 × 49 =
  21. 21.16 × 99 =
  22. 22.14 × 49 =
  23. 23.4 × 99 =
  24. 24.12 × 19 =
  25. 25.23 × 98 =
  26. 26.15 × 19 =
  27. 27.10 × 19 =
  28. 28.15 × 29 =
  29. 29.32 × 98 =
  30. 30.36 × 98 =
  31. 31.8 × 9 =
  32. 32.11 × 29 =
  33. 33.6 × 9 =
  34. 34.7 × 49 =
  35. 35.14 × 49 =
  36. 36.8 × 19 =
  37. 37.17 × 98 =
  38. 38.7 × 99 =
  39. 39.4 × 99 =
  40. 40.4 × 19 =

Answer key

  1. 1188
  2. 3136
  3. 27
  4. 882
  5. 114
  6. 1089
  7. 76
  8. 1862
  9. 232
  10. 228
  11. 735
  12. 27
  13. 693
  14. 3366
  15. 1287
  16. 2842
  17. 76
  18. 99
  19. 588
  20. 441
  21. 1584
  22. 686
  23. 396
  24. 228
  25. 2254
  26. 285
  27. 190
  28. 435
  29. 3136
  30. 3528
  31. 72
  32. 319
  33. 54
  34. 343
  35. 686
  36. 152
  37. 1666
  38. 693
  39. 396
  40. 76

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