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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 369 · 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. 1.15 × 98 =
  2. 2.4 × 29 =
  3. 3.36 × 98 =
  4. 4.5 × 19 =
  5. 5.19 × 99 =
  6. 6.7 × 19 =
  7. 7.14 × 9 =
  8. 8.6 × 19 =
  9. 9.8 × 9 =
  10. 10.15 × 29 =
  11. 11.3 × 29 =
  12. 12.29 × 99 =
  13. 13.38 × 99 =
  14. 14.14 × 29 =
  15. 15.14 × 9 =
  16. 16.8 × 29 =
  17. 17.12 × 19 =
  18. 18.14 × 19 =
  19. 19.14 × 9 =
  20. 20.12 × 99 =
  21. 21.13 × 49 =
  22. 22.12 × 98 =
  23. 23.13 × 98 =
  24. 24.4 × 19 =
  25. 25.14 × 19 =
  26. 26.3 × 29 =
  27. 27.19 × 99 =
  28. 28.7 × 9 =
  29. 29.4 × 98 =
  30. 30.10 × 98 =
  31. 31.15 × 49 =
  32. 32.30 × 99 =
  33. 33.8 × 9 =
  34. 34.27 × 98 =
  35. 35.12 × 19 =
  36. 36.28 × 99 =
  37. 37.9 × 99 =
  38. 38.6 × 29 =
  39. 39.10 × 29 =
  40. 40.10 × 29 =

Answer key

  1. 1470
  2. 116
  3. 3528
  4. 95
  5. 1881
  6. 133
  7. 126
  8. 114
  9. 72
  10. 435
  11. 87
  12. 2871
  13. 3762
  14. 406
  15. 126
  16. 232
  17. 228
  18. 266
  19. 126
  20. 1188
  21. 637
  22. 1176
  23. 1274
  24. 76
  25. 266
  26. 87
  27. 1881
  28. 63
  29. 392
  30. 980
  31. 735
  32. 2970
  33. 72
  34. 2646
  35. 228
  36. 2772
  37. 891
  38. 174
  39. 290
  40. 290

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