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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 451 · 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. 1.3 × 19 =
  2. 2.6 × 19 =
  3. 3.10 × 49 =
  4. 4.40 × 99 =
  5. 5.8 × 9 =
  6. 6.13 × 98 =
  7. 7.6 × 19 =
  8. 8.3 × 19 =
  9. 9.6 × 29 =
  10. 10.3 × 19 =
  11. 11.6 × 9 =
  12. 12.4 × 19 =
  13. 13.17 × 98 =
  14. 14.3 × 29 =
  15. 15.6 × 99 =
  16. 16.14 × 49 =
  17. 17.18 × 99 =
  18. 18.6 × 9 =
  19. 19.6 × 9 =
  20. 20.3 × 49 =
  21. 21.15 × 19 =
  22. 22.21 × 98 =
  23. 23.11 × 29 =
  24. 24.7 × 19 =
  25. 25.6 × 9 =
  26. 26.11 × 9 =
  27. 27.23 × 99 =
  28. 28.13 × 9 =
  29. 29.15 × 29 =
  30. 30.12 × 19 =
  31. 31.34 × 98 =
  32. 32.31 × 98 =
  33. 33.8 × 9 =
  34. 34.35 × 98 =
  35. 35.14 × 9 =
  36. 36.11 × 29 =
  37. 37.6 × 19 =
  38. 38.6 × 19 =
  39. 39.13 × 9 =
  40. 40.7 × 29 =

Answer key

  1. 57
  2. 114
  3. 490
  4. 3960
  5. 72
  6. 1274
  7. 114
  8. 57
  9. 174
  10. 57
  11. 54
  12. 76
  13. 1666
  14. 87
  15. 594
  16. 686
  17. 1782
  18. 54
  19. 54
  20. 147
  21. 285
  22. 2058
  23. 319
  24. 133
  25. 54
  26. 99
  27. 2277
  28. 117
  29. 435
  30. 228
  31. 3332
  32. 3038
  33. 72
  34. 3430
  35. 126
  36. 319
  37. 114
  38. 114
  39. 117
  40. 203

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