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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 34 · 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. 1.378.7 × 1000 =
  2. 2.1.87 ÷ 100 =
  3. 3.22.6 ÷ 100 =
  4. 4.36.21 × 100 =
  5. 5.7.95 × 10 =
  6. 6.15.16 × 10 =
  7. 7.455.7 ÷ 1000 =
  8. 8.314.8 ÷ 10 =
  9. 9.164.1 × 1000 =
  10. 10.11.81 × 100 =
  11. 11.16.85 ÷ 100 =
  12. 12.17.64 × 100 =
  13. 13.22.4 × 100 =
  14. 14.23.46 × 10 =
  15. 15.335.1 ÷ 100 =
  16. 16.8.18 × 10 =
  17. 17.4.17 × 1000 =
  18. 18.377.1 × 100 =
  19. 19.44.65 ÷ 10 =
  20. 20.125.2 ÷ 100 =
  21. 21.475.3 ÷ 100 =
  22. 22.26.61 × 10 =
  23. 23.91.2 × 10 =
  24. 24.3.79 × 1000 =
  25. 25.53.3 ÷ 1000 =
  26. 26.261.3 ÷ 1000 =
  27. 27.417.8 ÷ 1000 =
  28. 28.9.61 × 10 =
  29. 29.0.73 ÷ 10 =
  30. 30.36.17 × 10 =
  31. 31.33.31 × 10 =
  32. 32.43.14 ÷ 100 =
  33. 33.138.2 × 1000 =
  34. 34.159.1 ÷ 100 =
  35. 35.286.8 × 1000 =
  36. 36.48.18 × 10 =
  37. 37.38.53 × 1000 =
  38. 38.88.8 × 10 =
  39. 39.164.8 × 100 =
  40. 40.16.59 × 1000 =

Answer key

  1. 378700
  2. 0.0187
  3. 0.226
  4. 3621
  5. 79.5
  6. 151.6
  7. 0.4557
  8. 31.48
  9. 164100
  10. 1181
  11. 0.1685
  12. 1764
  13. 2240
  14. 234.6
  15. 3.351
  16. 81.8
  17. 4170
  18. 37710
  19. 4.465
  20. 1.252
  21. 4.753
  22. 266.1
  23. 912
  24. 3790
  25. 0.0533
  26. 0.2613
  27. 0.4178
  28. 96.1
  29. 0.073
  30. 361.7
  31. 333.1
  32. 0.4314
  33. 138200
  34. 1.591
  35. 286800
  36. 481.8
  37. 38530
  38. 888
  39. 16480
  40. 16590

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