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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 553 · 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 × 19 =
  2. 2.6 × 49 =
  3. 3.10 × 19 =
  4. 4.7 × 19 =
  5. 5.6 × 29 =
  6. 6.15 × 49 =
  7. 7.10 × 99 =
  8. 8.21 × 99 =
  9. 9.9 × 19 =
  10. 10.11 × 29 =
  11. 11.14 × 9 =
  12. 12.7 × 19 =
  13. 13.9 × 19 =
  14. 14.31 × 98 =
  15. 15.10 × 19 =
  16. 16.11 × 98 =
  17. 17.6 × 19 =
  18. 18.7 × 99 =
  19. 19.5 × 19 =
  20. 20.10 × 19 =
  21. 21.12 × 98 =
  22. 22.15 × 98 =
  23. 23.5 × 9 =
  24. 24.4 × 98 =
  25. 25.4 × 9 =
  26. 26.9 × 9 =
  27. 27.33 × 99 =
  28. 28.14 × 99 =
  29. 29.37 × 98 =
  30. 30.29 × 98 =
  31. 31.7 × 49 =
  32. 32.14 × 19 =
  33. 33.11 × 9 =
  34. 34.5 × 19 =
  35. 35.3 × 9 =
  36. 36.6 × 19 =
  37. 37.19 × 98 =
  38. 38.19 × 98 =
  39. 39.4 × 19 =
  40. 40.15 × 98 =

Answer key

  1. 247
  2. 294
  3. 190
  4. 133
  5. 174
  6. 735
  7. 990
  8. 2079
  9. 171
  10. 319
  11. 126
  12. 133
  13. 171
  14. 3038
  15. 190
  16. 1078
  17. 114
  18. 693
  19. 95
  20. 190
  21. 1176
  22. 1470
  23. 45
  24. 392
  25. 36
  26. 81
  27. 3267
  28. 1386
  29. 3626
  30. 2842
  31. 343
  32. 266
  33. 99
  34. 95
  35. 27
  36. 114
  37. 1862
  38. 1862
  39. 76
  40. 1470

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