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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 97 · 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. 1.307.2 × 10 =
  2. 2.346.9 × 10 =
  3. 3.25.88 ÷ 1000 =
  4. 4.38.4 ÷ 10 =
  5. 5.245.3 ÷ 10 =
  6. 6.111.1 ÷ 10 =
  7. 7.19.36 ÷ 1000 =
  8. 8.3.21 ÷ 10 =
  9. 9.254.1 ÷ 10 =
  10. 10.4.06 ÷ 100 =
  11. 11.10.2 ÷ 1000 =
  12. 12.13.78 × 10 =
  13. 13.47.27 × 10 =
  14. 14.303.7 × 10 =
  15. 15.163.3 ÷ 10 =
  16. 16.71.1 ÷ 1000 =
  17. 17.13.46 ÷ 100 =
  18. 18.5.8 ÷ 100 =
  19. 19.15.55 × 100 =
  20. 20.0.83 ÷ 10 =
  21. 21.30.17 × 100 =
  22. 22.53.9 × 1000 =
  23. 23.16.15 × 100 =
  24. 24.144.7 ÷ 10 =
  25. 25.145.4 × 100 =
  26. 26.36.68 × 100 =
  27. 27.287.7 × 100 =
  28. 28.198.6 ÷ 10 =
  29. 29.321.5 ÷ 1000 =
  30. 30.198.4 × 1000 =
  31. 31.47.5 ÷ 100 =
  32. 32.31.16 × 10 =
  33. 33.45.39 ÷ 1000 =
  34. 34.118.8 ÷ 1000 =
  35. 35.254.1 ÷ 10 =
  36. 36.49.01 ÷ 100 =
  37. 37.235.2 ÷ 1000 =
  38. 38.324.1 × 10 =
  39. 39.5.42 × 1000 =
  40. 40.110.4 × 100 =

Answer key

  1. 3072
  2. 3469
  3. 0.02588
  4. 3.84
  5. 24.53
  6. 11.11
  7. 0.01936
  8. 0.321
  9. 25.41
  10. 0.0406
  11. 0.0102
  12. 137.8
  13. 472.7
  14. 3037
  15. 16.33
  16. 0.0711
  17. 0.1346
  18. 0.058
  19. 1555
  20. 0.083
  21. 3017
  22. 53900
  23. 1615
  24. 14.47
  25. 14540
  26. 3668
  27. 28770
  28. 19.86
  29. 0.3215
  30. 198400
  31. 0.475
  32. 311.6
  33. 0.04539
  34. 0.1188
  35. 25.41
  36. 0.4901
  37. 0.2352
  38. 3241
  39. 5420
  40. 11040

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