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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 279 · 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. 1.129.9 ÷ 10 =
  2. 2.26.63 ÷ 100 =
  3. 3.207.1 × 1000 =
  4. 4.7.54 × 100 =
  5. 5.322.1 ÷ 10 =
  6. 6.33.04 ÷ 10 =
  7. 7.195.4 × 10 =
  8. 8.23.7 ÷ 100 =
  9. 9.19.9 × 1000 =
  10. 10.40.71 ÷ 100 =
  11. 11.297.7 × 1000 =
  12. 12.8.21 × 10 =
  13. 13.10.47 ÷ 1000 =
  14. 14.12.01 ÷ 1000 =
  15. 15.341.3 ÷ 1000 =
  16. 16.318.9 ÷ 100 =
  17. 17.261.6 × 10 =
  18. 18.49.33 × 10 =
  19. 19.233.8 ÷ 10 =
  20. 20.374.1 ÷ 10 =
  21. 21.37.88 × 1000 =
  22. 22.389.4 ÷ 10 =
  23. 23.18.08 ÷ 1000 =
  24. 24.17.39 × 10 =
  25. 25.48.32 × 1000 =
  26. 26.7.94 × 100 =
  27. 27.320.9 × 10 =
  28. 28.103.1 ÷ 10 =
  29. 29.271.2 ÷ 1000 =
  30. 30.0.89 × 10 =
  31. 31.74.2 ÷ 100 =
  32. 32.35.97 × 100 =
  33. 33.12.34 × 100 =
  34. 34.235.2 × 100 =
  35. 35.18.77 × 10 =
  36. 36.435.1 × 100 =
  37. 37.9.41 ÷ 100 =
  38. 38.25.9 ÷ 10 =
  39. 39.26.03 ÷ 100 =
  40. 40.46.93 × 100 =

Answer key

  1. 12.99
  2. 0.2663
  3. 207100
  4. 754
  5. 32.21
  6. 3.304
  7. 1954
  8. 0.237
  9. 19900
  10. 0.4071
  11. 297700
  12. 82.1
  13. 0.01047
  14. 0.01201
  15. 0.3413
  16. 3.189
  17. 2616
  18. 493.3
  19. 23.38
  20. 37.41
  21. 37880
  22. 38.94
  23. 0.01808
  24. 173.9
  25. 48320
  26. 794
  27. 3209
  28. 10.31
  29. 0.2712
  30. 8.9
  31. 0.742
  32. 3597
  33. 1234
  34. 23520
  35. 187.7
  36. 43510
  37. 0.0941
  38. 2.59
  39. 0.2603
  40. 4693

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