← Round and adjust lesson New set →

Round and Adjust Multiplication Worksheet

Tables & multiplication lesson 16: Round and adjust · Set 887 · 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. 1.10 × 49 =
  2. 2.15 × 19 =
  3. 3.19 × 99 =
  4. 4.10 × 9 =
  5. 5.10 × 9 =
  6. 6.11 × 9 =
  7. 7.25 × 98 =
  8. 8.20 × 98 =
  9. 9.6 × 19 =
  10. 10.12 × 99 =
  11. 11.8 × 98 =
  12. 12.3 × 98 =
  13. 13.7 × 99 =
  14. 14.30 × 98 =
  15. 15.7 × 9 =
  16. 16.4 × 9 =
  17. 17.7 × 98 =
  18. 18.13 × 99 =
  19. 19.14 × 19 =
  20. 20.15 × 49 =
  21. 21.3 × 99 =
  22. 22.13 × 9 =
  23. 23.14 × 29 =
  24. 24.32 × 99 =
  25. 25.8 × 29 =
  26. 26.13 × 29 =
  27. 27.12 × 9 =
  28. 28.12 × 19 =
  29. 29.10 × 9 =
  30. 30.5 × 49 =
  31. 31.5 × 19 =
  32. 32.37 × 98 =
  33. 33.4 × 9 =
  34. 34.4 × 29 =
  35. 35.8 × 9 =
  36. 36.13 × 49 =
  37. 37.5 × 19 =
  38. 38.5 × 19 =
  39. 39.12 × 29 =
  40. 40.5 × 19 =

Answer key

  1. 490
  2. 285
  3. 1881
  4. 90
  5. 90
  6. 99
  7. 2450
  8. 1960
  9. 114
  10. 1188
  11. 784
  12. 294
  13. 693
  14. 2940
  15. 63
  16. 36
  17. 686
  18. 1287
  19. 266
  20. 735
  21. 297
  22. 117
  23. 406
  24. 3168
  25. 232
  26. 377
  27. 108
  28. 228
  29. 90
  30. 245
  31. 95
  32. 3626
  33. 36
  34. 116
  35. 72
  36. 637
  37. 95
  38. 95
  39. 348
  40. 95

Free tables & multiplication lessons, practice and worksheets at talentjr.in/multiplication-tables