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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 402 · 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. 1.6 × 29 =
  2. 2.3 × 19 =
  3. 3.40 × 98 =
  4. 4.6 × 49 =
  5. 5.3 × 49 =
  6. 6.12 × 19 =
  7. 7.13 × 19 =
  8. 8.10 × 49 =
  9. 9.11 × 9 =
  10. 10.15 × 9 =
  11. 11.7 × 19 =
  12. 12.16 × 99 =
  13. 13.4 × 9 =
  14. 14.15 × 19 =
  15. 15.12 × 9 =
  16. 16.15 × 49 =
  17. 17.13 × 9 =
  18. 18.11 × 29 =
  19. 19.7 × 98 =
  20. 20.16 × 98 =
  21. 21.20 × 99 =
  22. 22.9 × 49 =
  23. 23.7 × 9 =
  24. 24.3 × 99 =
  25. 25.15 × 29 =
  26. 26.3 × 9 =
  27. 27.10 × 98 =
  28. 28.9 × 99 =
  29. 29.9 × 99 =
  30. 30.4 × 9 =
  31. 31.12 × 9 =
  32. 32.10 × 99 =
  33. 33.14 × 99 =
  34. 34.8 × 98 =
  35. 35.5 × 9 =
  36. 36.13 × 9 =
  37. 37.5 × 9 =
  38. 38.5 × 19 =
  39. 39.10 × 49 =
  40. 40.13 × 49 =

Answer key

  1. 174
  2. 57
  3. 3920
  4. 294
  5. 147
  6. 228
  7. 247
  8. 490
  9. 99
  10. 135
  11. 133
  12. 1584
  13. 36
  14. 285
  15. 108
  16. 735
  17. 117
  18. 319
  19. 686
  20. 1568
  21. 1980
  22. 441
  23. 63
  24. 297
  25. 435
  26. 27
  27. 980
  28. 891
  29. 891
  30. 36
  31. 108
  32. 990
  33. 1386
  34. 784
  35. 45
  36. 117
  37. 45
  38. 95
  39. 490
  40. 637

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