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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 29 · 40 questions
TalentJR

The fast method (Jump the point): Count the zeros: 10 → 1 jump, 100 → 2 jumps, 1000 → 3 jumps. × moves the point right; ÷ moves it left. Run out of digits? Fill the gaps with 0s. Drop 0s at the end of a decimal: 3.40 is 3.4.

NameDateTime takenScore ___ / 40
  1. 1.49.65 × 1000 =
  2. 2.154.8 × 1000 =
  3. 3.14.27 × 100 =
  4. 4.6.95 × 1000 =
  5. 5.32.23 ÷ 10 =
  6. 6.306.2 ÷ 100 =
  7. 7.7.83 × 100 =
  8. 8.210.2 × 10 =
  9. 9.6.3 × 1000 =
  10. 10.1.6 ÷ 10 =
  11. 11.258.1 ÷ 1000 =
  12. 12.348.2 ÷ 100 =
  13. 13.369.3 ÷ 1000 =
  14. 14.477.1 ÷ 100 =
  15. 15.31.47 ÷ 100 =
  16. 16.388.6 ÷ 10 =
  17. 17.17.35 ÷ 10 =
  18. 18.38.29 ÷ 1000 =
  19. 19.164.1 ÷ 10 =
  20. 20.46.39 × 10 =
  21. 21.38.7 × 10 =
  22. 22.5.48 ÷ 10 =
  23. 23.39.45 ÷ 100 =
  24. 24.12.88 ÷ 10 =
  25. 25.159.8 ÷ 10 =
  26. 26.6.39 × 1000 =
  27. 27.478.1 × 10 =
  28. 28.289.4 ÷ 10 =
  29. 29.482.7 × 100 =
  30. 30.41.62 × 10 =
  31. 31.113.4 ÷ 100 =
  32. 32.228.1 ÷ 100 =
  33. 33.418.4 × 10 =
  34. 34.134.8 × 1000 =
  35. 35.27.01 × 1000 =
  36. 36.276.1 × 10 =
  37. 37.477.6 × 100 =
  38. 38.37.93 × 1000 =
  39. 39.35.26 × 100 =
  40. 40.42.5 ÷ 1000 =

Answer key

  1. 49650
  2. 154800
  3. 1427
  4. 6950
  5. 3.223
  6. 3.062
  7. 783
  8. 2102
  9. 6300
  10. 0.16
  11. 0.2581
  12. 3.482
  13. 0.3693
  14. 4.771
  15. 0.3147
  16. 38.86
  17. 1.735
  18. 0.03829
  19. 16.41
  20. 463.9
  21. 387
  22. 0.548
  23. 0.3945
  24. 1.288
  25. 15.98
  26. 6390
  27. 4781
  28. 28.94
  29. 48270
  30. 416.2
  31. 1.134
  32. 2.281
  33. 4184
  34. 134800
  35. 27010
  36. 2761
  37. 47760
  38. 37930
  39. 3526
  40. 0.0425

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