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Multiply and Divide Decimals by 10, 100, 1000 Worksheet

Speed calculation lesson 17: Decimal point jumps · Set 852 · 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. 1.187.5 ÷ 10 =
  2. 2.10.64 × 10 =
  3. 3.280.5 × 100 =
  4. 4.182.5 × 100 =
  5. 5.172.3 ÷ 10 =
  6. 6.180.8 ÷ 10 =
  7. 7.181.5 ÷ 10 =
  8. 8.119.2 × 10 =
  9. 9.93.1 ÷ 100 =
  10. 10.64.8 × 100 =
  11. 11.131.2 × 100 =
  12. 12.100.1 × 100 =
  13. 13.106.4 ÷ 100 =
  14. 14.120.7 ÷ 10 =
  15. 15.48.22 ÷ 100 =
  16. 16.23.98 ÷ 100 =
  17. 17.17.85 ÷ 1000 =
  18. 18.28.57 × 1000 =
  19. 19.14.94 ÷ 100 =
  20. 20.13.17 × 10 =
  21. 21.44.95 ÷ 1000 =
  22. 22.14.82 × 100 =
  23. 23.18.11 × 10 =
  24. 24.151.9 × 100 =
  25. 25.36.69 ÷ 10 =
  26. 26.310.7 × 100 =
  27. 27.129.4 × 10 =
  28. 28.238.1 × 100 =
  29. 29.34.9 ÷ 1000 =
  30. 30.2.1 × 10 =
  31. 31.43.13 × 10 =
  32. 32.40.07 × 1000 =
  33. 33.297.4 ÷ 1000 =
  34. 34.422.8 × 10 =
  35. 35.366.6 × 100 =
  36. 36.56.1 × 1000 =
  37. 37.406.2 × 1000 =
  38. 38.208.7 × 1000 =
  39. 39.72.5 ÷ 10 =
  40. 40.495.2 × 10 =

Answer key

  1. 18.75
  2. 106.4
  3. 28050
  4. 18250
  5. 17.23
  6. 18.08
  7. 18.15
  8. 1192
  9. 0.931
  10. 6480
  11. 13120
  12. 10010
  13. 1.064
  14. 12.07
  15. 0.4822
  16. 0.2398
  17. 0.01785
  18. 28570
  19. 0.1494
  20. 131.7
  21. 0.04495
  22. 1482
  23. 181.1
  24. 15190
  25. 3.669
  26. 31070
  27. 1294
  28. 23810
  29. 0.0349
  30. 21
  31. 431.3
  32. 40070
  33. 0.2974
  34. 4228
  35. 36660
  36. 56100
  37. 406200
  38. 208700
  39. 7.25
  40. 4952

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