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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 711 · 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. 1.416.7 × 100 =
  2. 2.249.2 ÷ 1000 =
  3. 3.3.97 ÷ 10 =
  4. 4.304.5 ÷ 1000 =
  5. 5.462.4 × 10 =
  6. 6.2.16 ÷ 1000 =
  7. 7.40.21 × 100 =
  8. 8.9.29 ÷ 100 =
  9. 9.277.7 × 1000 =
  10. 10.12.11 ÷ 10 =
  11. 11.0.27 ÷ 10 =
  12. 12.43.11 ÷ 100 =
  13. 13.175.1 ÷ 10 =
  14. 14.42.87 × 10 =
  15. 15.4.7 × 100 =
  16. 16.422.8 ÷ 10 =
  17. 17.242.6 × 100 =
  18. 18.208.8 × 10 =
  19. 19.143.9 ÷ 1000 =
  20. 20.32.25 × 10 =
  21. 21.498.3 × 10 =
  22. 22.43.47 ÷ 100 =
  23. 23.462.6 × 1000 =
  24. 24.14.91 × 1000 =
  25. 25.29.32 × 10 =
  26. 26.113.9 × 100 =
  27. 27.143.5 ÷ 10 =
  28. 28.21.41 ÷ 100 =
  29. 29.431.7 × 1000 =
  30. 30.436.8 × 1000 =
  31. 31.2.22 × 100 =
  32. 32.311.1 × 100 =
  33. 33.14.59 ÷ 10 =
  34. 34.90.4 × 100 =
  35. 35.343.8 ÷ 10 =
  36. 36.4.11 ÷ 10 =
  37. 37.21.18 × 10 =
  38. 38.272.6 × 100 =
  39. 39.111.5 × 100 =
  40. 40.355.5 ÷ 10 =

Answer key

  1. 41670
  2. 0.2492
  3. 0.397
  4. 0.3045
  5. 4624
  6. 0.00216
  7. 4021
  8. 0.0929
  9. 277700
  10. 1.211
  11. 0.027
  12. 0.4311
  13. 17.51
  14. 428.7
  15. 470
  16. 42.28
  17. 24260
  18. 2088
  19. 0.1439
  20. 322.5
  21. 4983
  22. 0.4347
  23. 462600
  24. 14910
  25. 293.2
  26. 11390
  27. 14.35
  28. 0.2141
  29. 431700
  30. 436800
  31. 222
  32. 31110
  33. 1.459
  34. 9040
  35. 34.38
  36. 0.411
  37. 211.8
  38. 27260
  39. 11150
  40. 35.55

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