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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 341 · 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. 1.5 × 19 =
  2. 2.9 × 49 =
  3. 3.9 × 19 =
  4. 4.6 × 98 =
  5. 5.10 × 29 =
  6. 6.16 × 99 =
  7. 7.12 × 49 =
  8. 8.14 × 29 =
  9. 9.13 × 19 =
  10. 10.8 × 19 =
  11. 11.13 × 98 =
  12. 12.38 × 99 =
  13. 13.15 × 19 =
  14. 14.14 × 49 =
  15. 15.3 × 99 =
  16. 16.4 × 19 =
  17. 17.4 × 9 =
  18. 18.11 × 9 =
  19. 19.32 × 99 =
  20. 20.10 × 9 =
  21. 21.21 × 99 =
  22. 22.15 × 19 =
  23. 23.33 × 99 =
  24. 24.12 × 99 =
  25. 25.4 × 19 =
  26. 26.5 × 49 =
  27. 27.13 × 99 =
  28. 28.35 × 99 =
  29. 29.13 × 9 =
  30. 30.3 × 29 =
  31. 31.14 × 19 =
  32. 32.10 × 99 =
  33. 33.7 × 9 =
  34. 34.12 × 19 =
  35. 35.15 × 9 =
  36. 36.10 × 49 =
  37. 37.12 × 9 =
  38. 38.4 × 19 =
  39. 39.13 × 9 =
  40. 40.5 × 9 =

Answer key

  1. 95
  2. 441
  3. 171
  4. 588
  5. 290
  6. 1584
  7. 588
  8. 406
  9. 247
  10. 152
  11. 1274
  12. 3762
  13. 285
  14. 686
  15. 297
  16. 76
  17. 36
  18. 99
  19. 3168
  20. 90
  21. 2079
  22. 285
  23. 3267
  24. 1188
  25. 76
  26. 245
  27. 1287
  28. 3465
  29. 117
  30. 87
  31. 266
  32. 990
  33. 63
  34. 228
  35. 135
  36. 490
  37. 108
  38. 76
  39. 117
  40. 45

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