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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 672 · 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. 1.402.4 × 1000 =
  2. 2.39.2 ÷ 1000 =
  3. 3.98.2 ÷ 1000 =
  4. 4.467.1 × 1000 =
  5. 5.19.3 ÷ 100 =
  6. 6.76.4 × 1000 =
  7. 7.55.6 × 10 =
  8. 8.451.1 ÷ 10 =
  9. 9.17.13 × 100 =
  10. 10.4.27 × 100 =
  11. 11.329.1 × 10 =
  12. 12.55.1 × 10 =
  13. 13.16.17 ÷ 1000 =
  14. 14.9.49 ÷ 100 =
  15. 15.145.2 ÷ 100 =
  16. 16.21.51 ÷ 10 =
  17. 17.3.05 × 1000 =
  18. 18.28.81 ÷ 10 =
  19. 19.26.4 × 1000 =
  20. 20.374.5 × 1000 =
  21. 21.462.7 × 100 =
  22. 22.42.43 ÷ 1000 =
  23. 23.165.9 × 1000 =
  24. 24.116.1 × 1000 =
  25. 25.478.3 ÷ 100 =
  26. 26.35.21 ÷ 1000 =
  27. 27.46.23 ÷ 100 =
  28. 28.13.74 ÷ 10 =
  29. 29.0.18 ÷ 1000 =
  30. 30.373.1 ÷ 1000 =
  31. 31.7.41 × 100 =
  32. 32.21.27 × 10 =
  33. 33.19.28 × 1000 =
  34. 34.18.41 × 100 =
  35. 35.5.81 × 1000 =
  36. 36.12.38 × 1000 =
  37. 37.309.4 × 100 =
  38. 38.394.6 ÷ 1000 =
  39. 39.158.2 ÷ 10 =
  40. 40.12.21 ÷ 10 =

Answer key

  1. 402400
  2. 0.0392
  3. 0.0982
  4. 467100
  5. 0.193
  6. 76400
  7. 556
  8. 45.11
  9. 1713
  10. 427
  11. 3291
  12. 551
  13. 0.01617
  14. 0.0949
  15. 1.452
  16. 2.151
  17. 3050
  18. 2.881
  19. 26400
  20. 374500
  21. 46270
  22. 0.04243
  23. 165900
  24. 116100
  25. 4.783
  26. 0.03521
  27. 0.4623
  28. 1.374
  29. 0.00018
  30. 0.3731
  31. 741
  32. 212.7
  33. 19280
  34. 1841
  35. 5810
  36. 12380
  37. 30940
  38. 0.3946
  39. 15.82
  40. 1.221

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