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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 260 · 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. 1.26.09 ÷ 10 =
  2. 2.3.31 ÷ 10 =
  3. 3.147.9 × 1000 =
  4. 4.7.84 ÷ 10 =
  5. 5.442.3 ÷ 10 =
  6. 6.30.57 × 100 =
  7. 7.171.5 × 100 =
  8. 8.145.5 ÷ 1000 =
  9. 9.237.7 × 10 =
  10. 10.331.1 × 10 =
  11. 11.7.68 × 1000 =
  12. 12.380.5 ÷ 100 =
  13. 13.36.69 ÷ 1000 =
  14. 14.88.9 ÷ 10 =
  15. 15.6.47 ÷ 100 =
  16. 16.494.7 × 1000 =
  17. 17.46.63 ÷ 10 =
  18. 18.162.2 × 1000 =
  19. 19.306.8 ÷ 100 =
  20. 20.100.5 ÷ 1000 =
  21. 21.17.56 ÷ 100 =
  22. 22.43.14 × 100 =
  23. 23.443.6 × 10 =
  24. 24.7.26 × 100 =
  25. 25.27.27 × 10 =
  26. 26.346.1 × 1000 =
  27. 27.294.4 × 10 =
  28. 28.49.23 × 1000 =
  29. 29.42.38 × 1000 =
  30. 30.347.8 × 100 =
  31. 31.9.17 ÷ 100 =
  32. 32.25.75 × 1000 =
  33. 33.12.49 ÷ 1000 =
  34. 34.45.65 ÷ 1000 =
  35. 35.35.09 ÷ 100 =
  36. 36.9.93 ÷ 1000 =
  37. 37.40.28 × 1000 =
  38. 38.27.88 ÷ 100 =
  39. 39.185.6 ÷ 100 =
  40. 40.314.5 ÷ 1000 =

Answer key

  1. 2.609
  2. 0.331
  3. 147900
  4. 0.784
  5. 44.23
  6. 3057
  7. 17150
  8. 0.1455
  9. 2377
  10. 3311
  11. 7680
  12. 3.805
  13. 0.03669
  14. 8.89
  15. 0.0647
  16. 494700
  17. 4.663
  18. 162200
  19. 3.068
  20. 0.1005
  21. 0.1756
  22. 4314
  23. 4436
  24. 726
  25. 272.7
  26. 346100
  27. 2944
  28. 49230
  29. 42380
  30. 34780
  31. 0.0917
  32. 25750
  33. 0.01249
  34. 0.04565
  35. 0.3509
  36. 0.00993
  37. 40280
  38. 0.2788
  39. 1.856
  40. 0.3145

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