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Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 970 · 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. 1.13 × 98 =
  2. 2.13 × 19 =
  3. 3.28 × 98 =
  4. 4.3 × 19 =
  5. 5.11 × 49 =
  6. 6.9 × 49 =
  7. 7.13 × 99 =
  8. 8.12 × 98 =
  9. 9.15 × 19 =
  10. 10.4 × 9 =
  11. 11.14 × 49 =
  12. 12.4 × 9 =
  13. 13.8 × 9 =
  14. 14.22 × 98 =
  15. 15.8 × 19 =
  16. 16.10 × 19 =
  17. 17.4 × 29 =
  18. 18.12 × 19 =
  19. 19.8 × 9 =
  20. 20.7 × 29 =
  21. 21.16 × 99 =
  22. 22.14 × 9 =
  23. 23.3 × 29 =
  24. 24.8 × 49 =
  25. 25.11 × 99 =
  26. 26.6 × 9 =
  27. 27.11 × 9 =
  28. 28.4 × 49 =
  29. 29.13 × 49 =
  30. 30.9 × 29 =
  31. 31.25 × 99 =
  32. 32.4 × 9 =
  33. 33.11 × 19 =
  34. 34.34 × 98 =
  35. 35.23 × 99 =
  36. 36.26 × 99 =
  37. 37.5 × 19 =
  38. 38.30 × 99 =
  39. 39.38 × 99 =
  40. 40.12 × 19 =

Answer key

  1. 1274
  2. 247
  3. 2744
  4. 57
  5. 539
  6. 441
  7. 1287
  8. 1176
  9. 285
  10. 36
  11. 686
  12. 36
  13. 72
  14. 2156
  15. 152
  16. 190
  17. 116
  18. 228
  19. 72
  20. 203
  21. 1584
  22. 126
  23. 87
  24. 392
  25. 1089
  26. 54
  27. 99
  28. 196
  29. 637
  30. 261
  31. 2475
  32. 36
  33. 209
  34. 3332
  35. 2277
  36. 2574
  37. 95
  38. 2970
  39. 3762
  40. 228

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