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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 86 · 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. 1.14.48 × 100 =
  2. 2.46.13 ÷ 1000 =
  3. 3.19.82 ÷ 10 =
  4. 4.10.63 ÷ 10 =
  5. 5.114.6 × 1000 =
  6. 6.246.9 × 10 =
  7. 7.182.4 ÷ 10 =
  8. 8.27.94 ÷ 10 =
  9. 9.65.3 × 100 =
  10. 10.48.45 × 10 =
  11. 11.22.06 ÷ 10 =
  12. 12.35.87 × 10 =
  13. 13.262.5 ÷ 100 =
  14. 14.446.8 ÷ 10 =
  15. 15.20.1 × 1000 =
  16. 16.146.2 × 100 =
  17. 17.344.3 ÷ 1000 =
  18. 18.178.8 × 10 =
  19. 19.424.6 × 1000 =
  20. 20.14.79 × 10 =
  21. 21.8.27 × 100 =
  22. 22.238.6 × 10 =
  23. 23.23.41 ÷ 1000 =
  24. 24.46.92 × 10 =
  25. 25.10.42 ÷ 100 =
  26. 26.288.7 ÷ 1000 =
  27. 27.59.4 × 1000 =
  28. 28.1.94 ÷ 1000 =
  29. 29.145.5 ÷ 10 =
  30. 30.20.02 × 1000 =
  31. 31.30.68 × 10 =
  32. 32.17.87 ÷ 1000 =
  33. 33.186.1 ÷ 10 =
  34. 34.6.29 ÷ 1000 =
  35. 35.494.1 × 10 =
  36. 36.185.9 ÷ 1000 =
  37. 37.3.47 × 100 =
  38. 38.21.01 × 100 =
  39. 39.395.6 × 10 =
  40. 40.40.29 × 100 =

Answer key

  1. 1448
  2. 0.04613
  3. 1.982
  4. 1.063
  5. 114600
  6. 2469
  7. 18.24
  8. 2.794
  9. 6530
  10. 484.5
  11. 2.206
  12. 358.7
  13. 2.625
  14. 44.68
  15. 20100
  16. 14620
  17. 0.3443
  18. 1788
  19. 424600
  20. 147.9
  21. 827
  22. 2386
  23. 0.02341
  24. 469.2
  25. 0.1042
  26. 0.2887
  27. 59400
  28. 0.00194
  29. 14.55
  30. 20020
  31. 306.8
  32. 0.01787
  33. 18.61
  34. 0.00629
  35. 4941
  36. 0.1859
  37. 347
  38. 2101
  39. 3956
  40. 4029

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