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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 640 · 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. 1.93.9 ÷ 10 =
  2. 2.6.05 × 10 =
  3. 3.244.2 ÷ 10 =
  4. 4.460.1 ÷ 100 =
  5. 5.74.4 ÷ 100 =
  6. 6.287.9 × 100 =
  7. 7.4.63 ÷ 1000 =
  8. 8.333.5 ÷ 1000 =
  9. 9.12.97 × 10 =
  10. 10.12.65 × 10 =
  11. 11.150.8 × 100 =
  12. 12.25.62 ÷ 10 =
  13. 13.9.7 × 10 =
  14. 14.3.18 × 10 =
  15. 15.467.1 ÷ 100 =
  16. 16.46.01 × 1000 =
  17. 17.187.4 × 1000 =
  18. 18.365.2 × 10 =
  19. 19.23.53 × 100 =
  20. 20.482.3 × 100 =
  21. 21.276.4 ÷ 1000 =
  22. 22.234.1 × 1000 =
  23. 23.34.24 ÷ 10 =
  24. 24.282.8 ÷ 1000 =
  25. 25.224.9 ÷ 10 =
  26. 26.38.18 × 10 =
  27. 27.48.47 ÷ 1000 =
  28. 28.199.8 ÷ 100 =
  29. 29.45.9 × 10 =
  30. 30.151.6 × 100 =
  31. 31.43.24 ÷ 100 =
  32. 32.385.1 ÷ 100 =
  33. 33.212.2 ÷ 100 =
  34. 34.278.5 ÷ 100 =
  35. 35.10.41 ÷ 10 =
  36. 36.148.1 × 1000 =
  37. 37.105.6 × 100 =
  38. 38.440.9 ÷ 100 =
  39. 39.27.17 × 1000 =
  40. 40.39.39 × 1000 =

Answer key

  1. 9.39
  2. 60.5
  3. 24.42
  4. 4.601
  5. 0.744
  6. 28790
  7. 0.00463
  8. 0.3335
  9. 129.7
  10. 126.5
  11. 15080
  12. 2.562
  13. 97
  14. 31.8
  15. 4.671
  16. 46010
  17. 187400
  18. 3652
  19. 2353
  20. 48230
  21. 0.2764
  22. 234100
  23. 3.424
  24. 0.2828
  25. 22.49
  26. 381.8
  27. 0.04847
  28. 1.998
  29. 459
  30. 15160
  31. 0.4324
  32. 3.851
  33. 2.122
  34. 2.785
  35. 1.041
  36. 148100
  37. 10560
  38. 4.409
  39. 27170
  40. 39390

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