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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 472 · 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. 1.273.6 ÷ 10 =
  2. 2.283.1 × 10 =
  3. 3.14.17 × 10 =
  4. 4.102.5 ÷ 10 =
  5. 5.352.1 × 10 =
  6. 6.381.5 × 100 =
  7. 7.445.3 ÷ 100 =
  8. 8.327.7 × 10 =
  9. 9.48.01 ÷ 1000 =
  10. 10.15.61 ÷ 100 =
  11. 11.183.1 × 1000 =
  12. 12.23.01 × 100 =
  13. 13.66.5 × 100 =
  14. 14.323.4 × 100 =
  15. 15.26.19 × 100 =
  16. 16.32.54 ÷ 100 =
  17. 17.121.1 × 1000 =
  18. 18.105.1 ÷ 1000 =
  19. 19.234.2 × 100 =
  20. 20.333.3 × 100 =
  21. 21.46.46 ÷ 10 =
  22. 22.40.28 ÷ 10 =
  23. 23.461.3 ÷ 10 =
  24. 24.145.7 × 100 =
  25. 25.34.45 × 10 =
  26. 26.33.89 ÷ 10 =
  27. 27.4.26 ÷ 1000 =
  28. 28.6.78 × 100 =
  29. 29.0.84 × 1000 =
  30. 30.128.8 × 100 =
  31. 31.378.9 × 100 =
  32. 32.332.1 ÷ 10 =
  33. 33.28.34 ÷ 10 =
  34. 34.9.89 ÷ 1000 =
  35. 35.494.3 × 10 =
  36. 36.14.11 × 100 =
  37. 37.211.3 × 10 =
  38. 38.443.2 ÷ 1000 =
  39. 39.3.58 ÷ 1000 =
  40. 40.28.61 × 100 =

Answer key

  1. 27.36
  2. 2831
  3. 141.7
  4. 10.25
  5. 3521
  6. 38150
  7. 4.453
  8. 3277
  9. 0.04801
  10. 0.1561
  11. 183100
  12. 2301
  13. 6650
  14. 32340
  15. 2619
  16. 0.3254
  17. 121100
  18. 0.1051
  19. 23420
  20. 33330
  21. 4.646
  22. 4.028
  23. 46.13
  24. 14570
  25. 344.5
  26. 3.389
  27. 0.00426
  28. 678
  29. 840
  30. 12880
  31. 37890
  32. 33.21
  33. 2.834
  34. 0.00989
  35. 4943
  36. 1411
  37. 2113
  38. 0.4432
  39. 0.00358
  40. 2861

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