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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 750 · 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. 1.183.8 × 10 =
  2. 2.296.8 × 100 =
  3. 3.9.66 × 100 =
  4. 4.469.9 × 1000 =
  5. 5.154.9 × 10 =
  6. 6.25.65 ÷ 1000 =
  7. 7.48.07 ÷ 100 =
  8. 8.192.3 ÷ 10 =
  9. 9.34.51 × 1000 =
  10. 10.279.6 ÷ 100 =
  11. 11.394.1 × 100 =
  12. 12.170.9 × 100 =
  13. 13.5.01 × 100 =
  14. 14.45.7 ÷ 10 =
  15. 15.162.1 × 100 =
  16. 16.276.1 × 100 =
  17. 17.27.28 × 1000 =
  18. 18.358.6 × 100 =
  19. 19.100.8 ÷ 10 =
  20. 20.461.4 ÷ 1000 =
  21. 21.16.37 ÷ 10 =
  22. 22.41.52 × 10 =
  23. 23.233.3 × 10 =
  24. 24.4.82 ÷ 100 =
  25. 25.49.65 ÷ 10 =
  26. 26.6.32 × 100 =
  27. 27.44.34 × 100 =
  28. 28.303.6 × 1000 =
  29. 29.189.7 ÷ 100 =
  30. 30.64.4 × 100 =
  31. 31.27.17 × 10 =
  32. 32.45.6 ÷ 1000 =
  33. 33.2.6 ÷ 1000 =
  34. 34.19.68 ÷ 100 =
  35. 35.162.7 × 1000 =
  36. 36.155.4 × 10 =
  37. 37.6.78 × 1000 =
  38. 38.11.81 × 10 =
  39. 39.313.8 × 1000 =
  40. 40.129.8 ÷ 10 =

Answer key

  1. 1838
  2. 29680
  3. 966
  4. 469900
  5. 1549
  6. 0.02565
  7. 0.4807
  8. 19.23
  9. 34510
  10. 2.796
  11. 39410
  12. 17090
  13. 501
  14. 4.57
  15. 16210
  16. 27610
  17. 27280
  18. 35860
  19. 10.08
  20. 0.4614
  21. 1.637
  22. 415.2
  23. 2333
  24. 0.0482
  25. 4.965
  26. 632
  27. 4434
  28. 303600
  29. 1.897
  30. 6440
  31. 271.7
  32. 0.0456
  33. 0.0026
  34. 0.1968
  35. 162700
  36. 1554
  37. 6780
  38. 118.1
  39. 313800
  40. 12.98

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