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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 761 · 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. 1.44.01 × 1000 =
  2. 2.8.52 × 10 =
  3. 3.19.1 × 10 =
  4. 4.4.23 ÷ 100 =
  5. 5.13.75 ÷ 100 =
  6. 6.6.9 × 10 =
  7. 7.29.6 ÷ 10 =
  8. 8.269.8 × 100 =
  9. 9.120.6 ÷ 1000 =
  10. 10.206.4 × 10 =
  11. 11.250.2 ÷ 10 =
  12. 12.471.2 × 1000 =
  13. 13.104.3 × 1000 =
  14. 14.168.1 × 100 =
  15. 15.370.7 × 10 =
  16. 16.44.61 ÷ 10 =
  17. 17.139.2 × 1000 =
  18. 18.5.86 × 1000 =
  19. 19.41.2 ÷ 1000 =
  20. 20.26.86 ÷ 1000 =
  21. 21.20.11 ÷ 1000 =
  22. 22.13.11 ÷ 10 =
  23. 23.26.3 × 10 =
  24. 24.9.54 × 1000 =
  25. 25.2.44 × 100 =
  26. 26.54.9 × 1000 =
  27. 27.30.21 ÷ 10 =
  28. 28.97.9 × 100 =
  29. 29.202.7 × 1000 =
  30. 30.487.9 ÷ 10 =
  31. 31.15.96 × 1000 =
  32. 32.19.23 ÷ 100 =
  33. 33.43.96 × 10 =
  34. 34.24.98 × 1000 =
  35. 35.153.3 × 10 =
  36. 36.45.21 × 10 =
  37. 37.333.5 × 1000 =
  38. 38.23.69 × 10 =
  39. 39.198.8 × 1000 =
  40. 40.19.24 ÷ 10 =

Answer key

  1. 44010
  2. 85.2
  3. 191
  4. 0.0423
  5. 0.1375
  6. 69
  7. 2.96
  8. 26980
  9. 0.1206
  10. 2064
  11. 25.02
  12. 471200
  13. 104300
  14. 16810
  15. 3707
  16. 4.461
  17. 139200
  18. 5860
  19. 0.0412
  20. 0.02686
  21. 0.02011
  22. 1.311
  23. 263
  24. 9540
  25. 244
  26. 54900
  27. 3.021
  28. 9790
  29. 202700
  30. 48.79
  31. 15960
  32. 0.1923
  33. 439.6
  34. 24980
  35. 1533
  36. 452.1
  37. 333500
  38. 236.9
  39. 198800
  40. 1.924

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