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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 90 · 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. 1.156.6 × 1000 =
  2. 2.196.6 ÷ 1000 =
  3. 3.15.94 ÷ 1000 =
  4. 4.16.25 × 10 =
  5. 5.28.61 × 1000 =
  6. 6.37.84 ÷ 100 =
  7. 7.28.58 × 100 =
  8. 8.431.1 × 10 =
  9. 9.21.24 ÷ 10 =
  10. 10.24.18 × 1000 =
  11. 11.279.3 ÷ 100 =
  12. 12.1.84 × 10 =
  13. 13.47.05 ÷ 100 =
  14. 14.486.6 ÷ 100 =
  15. 15.470.1 ÷ 1000 =
  16. 16.444.9 ÷ 1000 =
  17. 17.30.68 ÷ 10 =
  18. 18.404.1 × 10 =
  19. 19.391.2 × 1000 =
  20. 20.134.7 ÷ 1000 =
  21. 21.145.4 × 100 =
  22. 22.0.21 ÷ 100 =
  23. 23.17.11 ÷ 10 =
  24. 24.111.7 × 10 =
  25. 25.26.61 × 100 =
  26. 26.126.3 ÷ 10 =
  27. 27.4.51 ÷ 1000 =
  28. 28.14.56 × 10 =
  29. 29.158.7 ÷ 10 =
  30. 30.231.3 × 10 =
  31. 31.430.3 ÷ 1000 =
  32. 32.3.23 × 100 =
  33. 33.201.1 × 1000 =
  34. 34.12.64 ÷ 10 =
  35. 35.5.11 × 100 =
  36. 36.7.78 ÷ 10 =
  37. 37.375.1 ÷ 10 =
  38. 38.496.1 ÷ 100 =
  39. 39.24.96 ÷ 10 =
  40. 40.18.65 × 10 =

Answer key

  1. 156600
  2. 0.1966
  3. 0.01594
  4. 162.5
  5. 28610
  6. 0.3784
  7. 2858
  8. 4311
  9. 2.124
  10. 24180
  11. 2.793
  12. 18.4
  13. 0.4705
  14. 4.866
  15. 0.4701
  16. 0.4449
  17. 3.068
  18. 4041
  19. 391200
  20. 0.1347
  21. 14540
  22. 0.0021
  23. 1.711
  24. 1117
  25. 2661
  26. 12.63
  27. 0.00451
  28. 145.6
  29. 15.87
  30. 2313
  31. 0.4303
  32. 323
  33. 201100
  34. 1.264
  35. 511
  36. 0.778
  37. 37.51
  38. 4.961
  39. 2.496
  40. 186.5

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