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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 800 · 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. 1.29.82 ÷ 1000 =
  2. 2.97.2 × 100 =
  3. 3.16.21 × 1000 =
  4. 4.164.4 × 10 =
  5. 5.3.13 ÷ 1000 =
  6. 6.399.1 × 1000 =
  7. 7.491.3 ÷ 10 =
  8. 8.3.25 ÷ 10 =
  9. 9.58.4 ÷ 10 =
  10. 10.119.7 × 10 =
  11. 11.13.95 ÷ 100 =
  12. 12.33.71 ÷ 10 =
  13. 13.29.59 × 100 =
  14. 14.387.8 ÷ 1000 =
  15. 15.288.5 × 1000 =
  16. 16.38.27 × 100 =
  17. 17.76.3 × 100 =
  18. 18.151.8 ÷ 100 =
  19. 19.450.7 ÷ 1000 =
  20. 20.2.04 ÷ 1000 =
  21. 21.193.8 ÷ 10 =
  22. 22.266.2 × 1000 =
  23. 23.425.3 × 10 =
  24. 24.476.4 × 100 =
  25. 25.426.3 ÷ 10 =
  26. 26.2.12 × 100 =
  27. 27.26.75 × 10 =
  28. 28.26.58 × 100 =
  29. 29.141.9 ÷ 10 =
  30. 30.217.2 × 10 =
  31. 31.13.83 × 100 =
  32. 32.137.2 ÷ 1000 =
  33. 33.10.71 × 100 =
  34. 34.35.95 × 1000 =
  35. 35.379.2 ÷ 10 =
  36. 36.385.1 × 100 =
  37. 37.20.14 × 100 =
  38. 38.33.67 ÷ 10 =
  39. 39.343.4 × 10 =
  40. 40.97.5 × 10 =

Answer key

  1. 0.02982
  2. 9720
  3. 16210
  4. 1644
  5. 0.00313
  6. 399100
  7. 49.13
  8. 0.325
  9. 5.84
  10. 1197
  11. 0.1395
  12. 3.371
  13. 2959
  14. 0.3878
  15. 288500
  16. 3827
  17. 7630
  18. 1.518
  19. 0.4507
  20. 0.00204
  21. 19.38
  22. 266200
  23. 4253
  24. 47640
  25. 42.63
  26. 212
  27. 267.5
  28. 2658
  29. 14.19
  30. 2172
  31. 1383
  32. 0.1372
  33. 1071
  34. 35950
  35. 37.92
  36. 38510
  37. 2014
  38. 3.367
  39. 3434
  40. 975

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