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Multiply by 5 and 50 Worksheet

Speed calculation lesson 7: × 5 and × 50: halve first · Set 626 · 40 questions
TalentJR

The fast method (Halve first): Halve the number. × 5: multiply the half by 10. × 50: multiply the half by 100. Odd number? Its half ends in .5 — 43 → 21.5 — and × 10 moves the point: 215.

NameDateTime takenScore ___ / 40
  1. 1.93 × 50 =
  2. 2.89 × 5 =
  3. 3.90 × 5 =
  4. 4.55 × 50 =
  5. 5.51 × 50 =
  6. 6.32 × 5 =
  7. 7.29 × 50 =
  8. 8.36 × 5 =
  9. 9.18 × 50 =
  10. 10.48 × 5 =
  11. 11.92 × 50 =
  12. 12.29 × 5 =
  13. 13.17 × 5 =
  14. 14.12 × 50 =
  15. 15.66 × 5 =
  16. 16.68 × 50 =
  17. 17.91 × 50 =
  18. 18.73 × 5 =
  19. 19.37 × 50 =
  20. 20.52 × 50 =
  21. 21.54 × 50 =
  22. 22.24 × 5 =
  23. 23.80 × 50 =
  24. 24.40 × 5 =
  25. 25.60 × 5 =
  26. 26.97 × 5 =
  27. 27.82 × 5 =
  28. 28.33 × 5 =
  29. 29.75 × 5 =
  30. 30.41 × 5 =
  31. 31.29 × 50 =
  32. 32.53 × 5 =
  33. 33.15 × 50 =
  34. 34.47 × 5 =
  35. 35.29 × 5 =
  36. 36.36 × 50 =
  37. 37.27 × 5 =
  38. 38.49 × 5 =
  39. 39.52 × 50 =
  40. 40.28 × 50 =

Answer key

  1. 4650
  2. 445
  3. 450
  4. 2750
  5. 2550
  6. 160
  7. 1450
  8. 180
  9. 900
  10. 240
  11. 4600
  12. 145
  13. 85
  14. 600
  15. 330
  16. 3400
  17. 4550
  18. 365
  19. 1850
  20. 2600
  21. 2700
  22. 120
  23. 4000
  24. 200
  25. 300
  26. 485
  27. 410
  28. 165
  29. 375
  30. 205
  31. 1450
  32. 265
  33. 750
  34. 235
  35. 145
  36. 1800
  37. 135
  38. 245
  39. 2600
  40. 1400

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