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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 163 · 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 × 98 =
  2. 2.10 × 19 =
  3. 3.6 × 49 =
  4. 4.4 × 49 =
  5. 5.13 × 98 =
  6. 6.14 × 49 =
  7. 7.13 × 29 =
  8. 8.13 × 49 =
  9. 9.8 × 9 =
  10. 10.9 × 29 =
  11. 11.9 × 9 =
  12. 12.3 × 19 =
  13. 13.4 × 9 =
  14. 14.9 × 19 =
  15. 15.16 × 99 =
  16. 16.14 × 98 =
  17. 17.28 × 98 =
  18. 18.13 × 19 =
  19. 19.10 × 9 =
  20. 20.30 × 98 =
  21. 21.31 × 98 =
  22. 22.13 × 19 =
  23. 23.14 × 19 =
  24. 24.13 × 29 =
  25. 25.10 × 49 =
  26. 26.38 × 98 =
  27. 27.13 × 49 =
  28. 28.12 × 19 =
  29. 29.13 × 29 =
  30. 30.15 × 29 =
  31. 31.11 × 9 =
  32. 32.3 × 49 =
  33. 33.11 × 19 =
  34. 34.6 × 29 =
  35. 35.19 × 98 =
  36. 36.14 × 29 =
  37. 37.4 × 9 =
  38. 38.11 × 29 =
  39. 39.9 × 49 =
  40. 40.29 × 98 =

Answer key

  1. 1078
  2. 190
  3. 294
  4. 196
  5. 1274
  6. 686
  7. 377
  8. 637
  9. 72
  10. 261
  11. 81
  12. 57
  13. 36
  14. 171
  15. 1584
  16. 1372
  17. 2744
  18. 247
  19. 90
  20. 2940
  21. 3038
  22. 247
  23. 266
  24. 377
  25. 490
  26. 3724
  27. 637
  28. 228
  29. 377
  30. 435
  31. 99
  32. 147
  33. 209
  34. 174
  35. 1862
  36. 406
  37. 36
  38. 319
  39. 441
  40. 2842

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