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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 840 · 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. 1.12.65 ÷ 10 =
  2. 2.19.31 ÷ 1000 =
  3. 3.4.27 × 100 =
  4. 4.275.8 ÷ 100 =
  5. 5.11.96 × 1000 =
  6. 6.34.35 ÷ 1000 =
  7. 7.245.7 × 10 =
  8. 8.447.9 × 100 =
  9. 9.31.5 × 100 =
  10. 10.79.9 × 1000 =
  11. 11.333.5 ÷ 1000 =
  12. 12.318.9 ÷ 10 =
  13. 13.268.5 ÷ 1000 =
  14. 14.342.8 ÷ 10 =
  15. 15.323.2 × 100 =
  16. 16.397.2 × 10 =
  17. 17.45.78 × 100 =
  18. 18.33.73 × 1000 =
  19. 19.19.35 ÷ 10 =
  20. 20.387.8 × 10 =
  21. 21.16.63 × 10 =
  22. 22.14.24 ÷ 10 =
  23. 23.191.1 ÷ 100 =
  24. 24.123.7 × 100 =
  25. 25.160.3 ÷ 10 =
  26. 26.11.61 × 10 =
  27. 27.27.93 × 10 =
  28. 28.388.2 ÷ 100 =
  29. 29.89.3 × 10 =
  30. 30.15.18 × 10 =
  31. 31.2.03 × 1000 =
  32. 32.274.3 × 10 =
  33. 33.430.3 ÷ 1000 =
  34. 34.63.6 × 10 =
  35. 35.360.9 × 10 =
  36. 36.10.32 × 1000 =
  37. 37.9.63 × 1000 =
  38. 38.149.5 × 10 =
  39. 39.28.71 × 1000 =
  40. 40.280.5 × 10 =

Answer key

  1. 1.265
  2. 0.01931
  3. 427
  4. 2.758
  5. 11960
  6. 0.03435
  7. 2457
  8. 44790
  9. 3150
  10. 79900
  11. 0.3335
  12. 31.89
  13. 0.2685
  14. 34.28
  15. 32320
  16. 3972
  17. 4578
  18. 33730
  19. 1.935
  20. 3878
  21. 166.3
  22. 1.424
  23. 1.911
  24. 12370
  25. 16.03
  26. 116.1
  27. 279.3
  28. 3.882
  29. 893
  30. 151.8
  31. 2030
  32. 2743
  33. 0.4303
  34. 636
  35. 3609
  36. 10320
  37. 9630
  38. 1495
  39. 28710
  40. 2805

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