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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 363 · 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. 1.435.5 ÷ 1000 =
  2. 2.167.6 × 100 =
  3. 3.171.9 ÷ 1000 =
  4. 4.38.63 × 10 =
  5. 5.10.61 ÷ 10 =
  6. 6.31.1 ÷ 10 =
  7. 7.14.82 ÷ 1000 =
  8. 8.2.47 × 10 =
  9. 9.30.18 × 1000 =
  10. 10.31.65 × 100 =
  11. 11.164.1 × 10 =
  12. 12.63.1 ÷ 100 =
  13. 13.24.12 ÷ 100 =
  14. 14.128.8 ÷ 1000 =
  15. 15.271.9 ÷ 1000 =
  16. 16.3.48 × 1000 =
  17. 17.227.2 × 10 =
  18. 18.152.5 × 10 =
  19. 19.223.7 × 10 =
  20. 20.4.45 × 100 =
  21. 21.9.04 × 10 =
  22. 22.32.69 ÷ 10 =
  23. 23.27.06 × 10 =
  24. 24.239.9 ÷ 100 =
  25. 25.468.8 ÷ 100 =
  26. 26.21.08 × 10 =
  27. 27.38.15 × 100 =
  28. 28.181.1 ÷ 10 =
  29. 29.497.6 × 10 =
  30. 30.32.55 × 10 =
  31. 31.15.86 ÷ 1000 =
  32. 32.382.1 ÷ 1000 =
  33. 33.13.91 × 10 =
  34. 34.2.01 ÷ 10 =
  35. 35.11.06 × 10 =
  36. 36.23.26 ÷ 1000 =
  37. 37.327.3 × 1000 =
  38. 38.335.7 × 10 =
  39. 39.372.1 × 1000 =
  40. 40.213.9 × 100 =

Answer key

  1. 0.4355
  2. 16760
  3. 0.1719
  4. 386.3
  5. 1.061
  6. 3.11
  7. 0.01482
  8. 24.7
  9. 30180
  10. 3165
  11. 1641
  12. 0.631
  13. 0.2412
  14. 0.1288
  15. 0.2719
  16. 3480
  17. 2272
  18. 1525
  19. 2237
  20. 445
  21. 90.4
  22. 3.269
  23. 270.6
  24. 2.399
  25. 4.688
  26. 210.8
  27. 3815
  28. 18.11
  29. 4976
  30. 325.5
  31. 0.01586
  32. 0.3821
  33. 139.1
  34. 0.201
  35. 110.6
  36. 0.02326
  37. 327300
  38. 3357
  39. 372100
  40. 21390

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