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Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 143 · 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. 1.0.56 × 21 — where does the decimal point go? (a) 11.76 (b) 1.176 (c) 117.6 (d) 0.1176
  2. 2.0.16 × 1.4 — where does the decimal point go? (a) 2.24 (b) 0.00224 (c) 0.224 (d) 0.0224
  3. 3.8.9 × 0.3 — where does the decimal point go? (a) 0.267 (b) 0.0267 (c) 26.7 (d) 2.67
  4. 4.1.9 × 3.9 — where does the decimal point go? (a) 0.0741 (b) 7.41 (c) 74.1 (d) 0.741
  5. 5.0.34 × 3 — where does the decimal point go? (a) 0.0102 (b) 0.102 (c) 10.2 (d) 1.02
  6. 6.2.7 × 2 — where does the decimal point go? (a) 0.54 (b) 5.4 (c) 54 (d) 0.054
  7. 7.8.7 × 4.3 — where does the decimal point go? (a) 0.3741 (b) 3.741 (c) 37.41 (d) 374.1
  8. 8.0.58 × 6 — where does the decimal point go? (a) 0.0348 (b) 0.348 (c) 34.8 (d) 3.48
  9. 9.7.1 × 3.2 — where does the decimal point go? (a) 0.2272 (b) 22.72 (c) 2.272 (d) 227.2
  10. 10.0.51 × 6 — where does the decimal point go? (a) 3.06 (b) 0.0306 (c) 30.6 (d) 0.306
  11. 11.0.51 × 5 — where does the decimal point go? (a) 0.255 (b) 25.5 (c) 2.55 (d) 0.0255
  12. 12.8.4 × 0.9 — where does the decimal point go? (a) 0.0756 (b) 7.56 (c) 75.6 (d) 0.756
  13. 13.7.3 × 2.9 — where does the decimal point go? (a) 0.2117 (b) 21.17 (c) 211.7 (d) 2.117
  14. 14.0.38 × 0.8 — where does the decimal point go? (a) 0.304 (b) 0.00304 (c) 0.0304 (d) 3.04
  15. 15.2.5 × 0.7 — where does the decimal point go? (a) 1.75 (b) 0.0175 (c) 0.175 (d) 17.5
  16. 16.0.27 × 5 — where does the decimal point go? (a) 0.135 (b) 13.5 (c) 0.0135 (d) 1.35
  17. 17.1.6 × 2.8 — where does the decimal point go? (a) 4.48 (b) 0.448 (c) 0.0448 (d) 44.8
  18. 18.5.9 × 0.9 — where does the decimal point go? (a) 0.531 (b) 5.31 (c) 0.0531 (d) 53.1
  19. 19.3.9 × 3.5 — where does the decimal point go? (a) 0.1365 (b) 136.5 (c) 13.65 (d) 1.365
  20. 20.3.9 × 0.3 — where does the decimal point go? (a) 0.117 (b) 11.7 (c) 0.0117 (d) 1.17
  21. 21.2.1 × 22 — where does the decimal point go? (a) 46.2 (b) 0.462 (c) 462 (d) 4.62
  22. 22.8.4 × 0.4 — where does the decimal point go? (a) 3.36 (b) 0.336 (c) 0.0336 (d) 33.6
  23. 23.0.83 × 13 — where does the decimal point go? (a) 0.1079 (b) 10.79 (c) 107.9 (d) 1.079
  24. 24.2.2 × 0.6 — where does the decimal point go? (a) 0.132 (b) 1.32 (c) 0.0132 (d) 13.2
  25. 25.0.34 × 31 — where does the decimal point go? (a) 1.054 (b) 0.1054 (c) 105.4 (d) 10.54
  26. 26.0.98 × 3.6 — where does the decimal point go? (a) 0.3528 (b) 3.528 (c) 0.03528 (d) 35.28
  27. 27.2.7 × 17 — where does the decimal point go? (a) 4.59 (b) 459 (c) 0.459 (d) 45.9
  28. 28.4.3 × 4 — where does the decimal point go? (a) 17.2 (b) 172 (c) 0.172 (d) 1.72
  29. 29.0.16 × 4 — where does the decimal point go? (a) 0.064 (b) 0.64 (c) 6.4 (d) 0.0064
  30. 30.0.71 × 3 — where does the decimal point go? (a) 2.13 (b) 0.0213 (c) 21.3 (d) 0.213
  31. 31.5.9 × 0.7 — where does the decimal point go? (a) 0.0413 (b) 0.413 (c) 41.3 (d) 4.13
  32. 32.0.56 × 4.8 — where does the decimal point go? (a) 0.02688 (b) 2.688 (c) 26.88 (d) 0.2688
  33. 33.5.9 × 0.5 — where does the decimal point go? (a) 0.0295 (b) 0.295 (c) 2.95 (d) 29.5
  34. 34.7.6 × 0.8 — where does the decimal point go? (a) 0.0608 (b) 60.8 (c) 0.608 (d) 6.08
  35. 35.0.67 × 4 — where does the decimal point go? (a) 0.0268 (b) 26.8 (c) 2.68 (d) 0.268
  36. 36.4.6 × 0.6 — where does the decimal point go? (a) 27.6 (b) 0.0276 (c) 2.76 (d) 0.276
  37. 37.0.42 × 46 — where does the decimal point go? (a) 19.32 (b) 0.1932 (c) 193.2 (d) 1.932
  38. 38.0.98 × 2.3 — where does the decimal point go? (a) 0.02254 (b) 2.254 (c) 22.54 (d) 0.2254
  39. 39.0.21 × 2 — where does the decimal point go? (a) 0.042 (b) 0.42 (c) 0.0042 (d) 4.2
  40. 40.9.4 × 4 — where does the decimal point go? (a) 37.6 (b) 376 (c) 3.76 (d) 0.376

Answer key

  1. 11.76
  2. 0.224
  3. 2.67
  4. 7.41
  5. 1.02
  6. 5.4
  7. 37.41
  8. 3.48
  9. 22.72
  10. 3.06
  11. 2.55
  12. 7.56
  13. 21.17
  14. 0.304
  15. 1.75
  16. 1.35
  17. 4.48
  18. 5.31
  19. 13.65
  20. 1.17
  21. 46.2
  22. 3.36
  23. 10.79
  24. 1.32
  25. 10.54
  26. 3.528
  27. 45.9
  28. 17.2
  29. 0.64
  30. 2.13
  31. 4.13
  32. 2.688
  33. 2.95
  34. 6.08
  35. 2.68
  36. 2.76
  37. 19.32
  38. 2.254
  39. 0.42
  40. 37.6

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