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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 295 · 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. 1.34.69 × 1000 =
  2. 2.45.19 × 1000 =
  3. 3.289.5 × 1000 =
  4. 4.26.23 ÷ 1000 =
  5. 5.3.52 × 100 =
  6. 6.41.37 × 100 =
  7. 7.4.99 ÷ 10 =
  8. 8.13.35 ÷ 1000 =
  9. 9.2.31 ÷ 10 =
  10. 10.42.03 ÷ 1000 =
  11. 11.386.8 × 1000 =
  12. 12.104.6 ÷ 1000 =
  13. 13.23.5 × 100 =
  14. 14.388.5 ÷ 1000 =
  15. 15.18.03 ÷ 100 =
  16. 16.46.81 × 10 =
  17. 17.131.3 ÷ 10 =
  18. 18.223.3 × 10 =
  19. 19.448.1 × 100 =
  20. 20.145.5 × 1000 =
  21. 21.10.95 × 1000 =
  22. 22.162.7 ÷ 100 =
  23. 23.123.5 ÷ 1000 =
  24. 24.40.97 × 10 =
  25. 25.26.51 ÷ 100 =
  26. 26.66.5 ÷ 100 =
  27. 27.46.6 ÷ 100 =
  28. 28.463.5 × 10 =
  29. 29.31.42 ÷ 100 =
  30. 30.2.43 × 100 =
  31. 31.219.9 × 100 =
  32. 32.45.06 ÷ 100 =
  33. 33.39.74 ÷ 1000 =
  34. 34.1.31 × 1000 =
  35. 35.34.76 ÷ 100 =
  36. 36.471.4 ÷ 1000 =
  37. 37.43.97 ÷ 100 =
  38. 38.236.3 × 10 =
  39. 39.225.8 × 1000 =
  40. 40.44.41 ÷ 100 =

Answer key

  1. 34690
  2. 45190
  3. 289500
  4. 0.02623
  5. 352
  6. 4137
  7. 0.499
  8. 0.01335
  9. 0.231
  10. 0.04203
  11. 386800
  12. 0.1046
  13. 2350
  14. 0.3885
  15. 0.1803
  16. 468.1
  17. 13.13
  18. 2233
  19. 44810
  20. 145500
  21. 10950
  22. 1.627
  23. 0.1235
  24. 409.7
  25. 0.2651
  26. 0.665
  27. 0.466
  28. 4635
  29. 0.3142
  30. 243
  31. 21990
  32. 0.4506
  33. 0.03974
  34. 1310
  35. 0.3476
  36. 0.4714
  37. 0.4397
  38. 2363
  39. 225800
  40. 0.4441

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