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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 185 · 40 questions
TalentJR

The trick (Count the places): Forget the points and multiply the whole numbers. Count all the digits after the points in the question. Put the point that many places from the right, then check by rounding.

NameDateTime takenScore ___ / 40
  1. 1.0.85 × 7 — where does the decimal point go? (a) 0.0595 (b) 0.595 (c) 59.5 (d) 5.95
  2. 2.3.9 × 0.5 — where does the decimal point go? (a) 0.195 (b) 0.0195 (c) 1.95 (d) 19.5
  3. 3.0.26 × 3.3 — where does the decimal point go? (a) 0.858 (b) 8.58 (c) 0.0858 (d) 0.00858
  4. 4.0.25 × 1.9 — where does the decimal point go? (a) 0.00475 (b) 4.75 (c) 0.475 (d) 0.0475
  5. 5.0.31 × 0.2 — where does the decimal point go? (a) 0.00062 (b) 0.0062 (c) 0.62 (d) 0.062
  6. 6.0.38 × 4 — where does the decimal point go? (a) 1.52 (b) 15.2 (c) 0.0152 (d) 0.152
  7. 7.4.2 × 6 — where does the decimal point go? (a) 0.252 (b) 2.52 (c) 252 (d) 25.2
  8. 8.8.9 × 0.6 — where does the decimal point go? (a) 0.534 (b) 53.4 (c) 5.34 (d) 0.0534
  9. 9.3.4 × 9 — where does the decimal point go? (a) 30.6 (b) 0.306 (c) 306 (d) 3.06
  10. 10.9.6 × 22 — where does the decimal point go? (a) 21.12 (b) 2112 (c) 2.112 (d) 211.2
  11. 11.0.36 × 0.8 — where does the decimal point go? (a) 0.0288 (b) 2.88 (c) 0.288 (d) 0.00288
  12. 12.0.85 × 37 — where does the decimal point go? (a) 314.5 (b) 31.45 (c) 0.3145 (d) 3.145
  13. 13.3.9 × 0.2 — where does the decimal point go? (a) 7.8 (b) 0.0078 (c) 0.78 (d) 0.078
  14. 14.0.32 × 2 — where does the decimal point go? (a) 0.64 (b) 0.0064 (c) 0.064 (d) 6.4
  15. 15.0.76 × 4 — where does the decimal point go? (a) 3.04 (b) 0.304 (c) 30.4 (d) 0.0304
  16. 16.2.4 × 3 — where does the decimal point go? (a) 72 (b) 0.072 (c) 7.2 (d) 0.72
  17. 17.7.9 × 9 — where does the decimal point go? (a) 0.711 (b) 7.11 (c) 71.1 (d) 711
  18. 18.0.29 × 6 — where does the decimal point go? (a) 1.74 (b) 17.4 (c) 0.0174 (d) 0.174
  19. 19.6.8 × 1.6 — where does the decimal point go? (a) 10.88 (b) 1.088 (c) 108.8 (d) 0.1088
  20. 20.2.9 × 6 — where does the decimal point go? (a) 1.74 (b) 0.174 (c) 174 (d) 17.4
  21. 21.3.7 × 0.2 — where does the decimal point go? (a) 0.74 (b) 0.074 (c) 7.4 (d) 0.0074
  22. 22.0.37 × 35 — where does the decimal point go? (a) 1.295 (b) 129.5 (c) 0.1295 (d) 12.95
  23. 23.0.72 × 0.4 — where does the decimal point go? (a) 0.0288 (b) 0.00288 (c) 0.288 (d) 2.88
  24. 24.0.28 × 0.8 — where does the decimal point go? (a) 2.24 (b) 0.224 (c) 0.00224 (d) 0.0224
  25. 25.4.7 × 8 — where does the decimal point go? (a) 37.6 (b) 3.76 (c) 376 (d) 0.376
  26. 26.8.7 × 0.3 — where does the decimal point go? (a) 2.61 (b) 26.1 (c) 0.0261 (d) 0.261
  27. 27.0.75 × 7 — where does the decimal point go? (a) 52.5 (b) 5.25 (c) 0.0525 (d) 0.525
  28. 28.4.6 × 6 — where does the decimal point go? (a) 0.276 (b) 2.76 (c) 276 (d) 27.6
  29. 29.0.15 × 2.9 — where does the decimal point go? (a) 0.00435 (b) 0.0435 (c) 4.35 (d) 0.435
  30. 30.3.1 × 0.8 — where does the decimal point go? (a) 2.48 (b) 0.248 (c) 24.8 (d) 0.0248
  31. 31.2.5 × 0.9 — where does the decimal point go? (a) 0.0225 (b) 2.25 (c) 22.5 (d) 0.225
  32. 32.3.1 × 4.1 — where does the decimal point go? (a) 1.271 (b) 127.1 (c) 0.1271 (d) 12.71
  33. 33.1.2 × 1.8 — where does the decimal point go? (a) 0.0216 (b) 21.6 (c) 2.16 (d) 0.216
  34. 34.0.51 × 2.7 — where does the decimal point go? (a) 13.77 (b) 0.01377 (c) 1.377 (d) 0.1377
  35. 35.0.75 × 5 — where does the decimal point go? (a) 0.375 (b) 0.0375 (c) 3.75 (d) 37.5
  36. 36.0.43 × 5 — where does the decimal point go? (a) 0.0215 (b) 2.15 (c) 21.5 (d) 0.215
  37. 37.0.44 × 2 — where does the decimal point go? (a) 0.0088 (b) 0.088 (c) 0.88 (d) 8.8
  38. 38.0.15 × 0.3 — where does the decimal point go? (a) 0.045 (b) 0.0045 (c) 0.00045 (d) 0.45
  39. 39.0.89 × 0.9 — where does the decimal point go? (a) 0.0801 (b) 0.00801 (c) 0.801 (d) 8.01
  40. 40.8.1 × 4.6 — where does the decimal point go? (a) 37.26 (b) 372.6 (c) 0.3726 (d) 3.726

Answer key

  1. 5.95
  2. 1.95
  3. 0.858
  4. 0.475
  5. 0.062
  6. 1.52
  7. 25.2
  8. 5.34
  9. 30.6
  10. 211.2
  11. 0.288
  12. 31.45
  13. 0.78
  14. 0.64
  15. 3.04
  16. 7.2
  17. 71.1
  18. 1.74
  19. 10.88
  20. 17.4
  21. 0.74
  22. 12.95
  23. 0.288
  24. 0.224
  25. 37.6
  26. 2.61
  27. 5.25
  28. 27.6
  29. 0.435
  30. 2.48
  31. 2.25
  32. 12.71
  33. 2.16
  34. 1.377
  35. 3.75
  36. 2.15
  37. 0.88
  38. 0.045
  39. 0.801
  40. 37.26

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