Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 492 · 40 questions

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.

1. 1.9.5 × 21 — where does the decimal point go? (a) 1995 (b) 199.5 (c) 19.95 (d) 1.995
2. 2.9.3 × 45 — where does the decimal point go? (a) 4.185 (b) 418.5 (c) 4185 (d) 41.85
3. 3.0.62 × 2 — where does the decimal point go? (a) 0.124 (b) 1.24 (c) 12.4 (d) 0.0124
4. 4.0.49 × 0.8 — where does the decimal point go? (a) 0.392 (b) 3.92 (c) 0.00392 (d) 0.0392
5. 5.4.8 × 9 — where does the decimal point go? (a) 432 (b) 0.432 (c) 4.32 (d) 43.2
6. 6.1.2 × 0.2 — where does the decimal point go? (a) 2.4 (b) 0.024 (c) 0.24 (d) 0.0024
7. 7.0.15 × 0.3 — where does the decimal point go? (a) 0.045 (b) 0.00045 (c) 0.0045 (d) 0.45
8. 8.0.14 × 7 — where does the decimal point go? (a) 9.8 (b) 0.098 (c) 0.0098 (d) 0.98
9. 9.4.3 × 4.7 — where does the decimal point go? (a) 20.21 (b) 0.2021 (c) 2.021 (d) 202.1
10. 10.7.9 × 39 — where does the decimal point go? (a) 30.81 (b) 308.1 (c) 3081 (d) 3.081
11. 11.8.3 × 0.6 — where does the decimal point go? (a) 0.0498 (b) 49.8 (c) 0.498 (d) 4.98
12. 12.2.3 × 8 — where does the decimal point go? (a) 1.84 (b) 18.4 (c) 184 (d) 0.184
13. 13.8.4 × 3.7 — where does the decimal point go? (a) 0.3108 (b) 310.8 (c) 3.108 (d) 31.08
14. 14.2.8 × 3.6 — where does the decimal point go? (a) 10.08 (b) 1.008 (c) 0.1008 (d) 100.8
15. 15.0.98 × 11 — where does the decimal point go? (a) 10.78 (b) 107.8 (c) 0.1078 (d) 1.078
16. 16.0.65 × 1.3 — where does the decimal point go? (a) 0.00845 (b) 8.45 (c) 0.845 (d) 0.0845
17. 17.9.9 × 31 — where does the decimal point go? (a) 30.69 (b) 3.069 (c) 306.9 (d) 3069
18. 18.8.4 × 24 — where does the decimal point go? (a) 2016 (b) 2.016 (c) 20.16 (d) 201.6
19. 19.6.6 × 6 — where does the decimal point go? (a) 39.6 (b) 3.96 (c) 396 (d) 0.396
20. 20.0.39 × 2 — where does the decimal point go? (a) 0.078 (b) 0.0078 (c) 0.78 (d) 7.8
21. 21.4.3 × 33 — where does the decimal point go? (a) 141.9 (b) 1419 (c) 14.19 (d) 1.419
22. 22.0.99 × 6 — where does the decimal point go? (a) 0.594 (b) 59.4 (c) 0.0594 (d) 5.94
23. 23.0.93 × 6 — where does the decimal point go? (a) 5.58 (b) 55.8 (c) 0.558 (d) 0.0558
24. 24.5.4 × 41 — where does the decimal point go? (a) 2.214 (b) 22.14 (c) 221.4 (d) 2214
25. 25.0.37 × 44 — where does the decimal point go? (a) 1.628 (b) 0.1628 (c) 162.8 (d) 16.28
26. 26.1.9 × 2 — where does the decimal point go? (a) 0.038 (b) 0.38 (c) 3.8 (d) 38
27. 27.2.6 × 26 — where does the decimal point go? (a) 0.676 (b) 676 (c) 6.76 (d) 67.6
28. 28.3.6 × 0.3 — where does the decimal point go? (a) 0.0108 (b) 0.108 (c) 10.8 (d) 1.08
29. 29.3.5 × 7 — where does the decimal point go? (a) 24.5 (b) 0.245 (c) 2.45 (d) 245
30. 30.5.2 × 1.1 — where does the decimal point go? (a) 5.72 (b) 0.572 (c) 57.2 (d) 0.0572
31. 31.0.43 × 2.5 — where does the decimal point go? (a) 1.075 (b) 0.1075 (c) 0.01075 (d) 10.75
32. 32.7.3 × 0.4 — where does the decimal point go? (a) 29.2 (b) 0.292 (c) 2.92 (d) 0.0292
33. 33.3.9 × 0.2 — where does the decimal point go? (a) 7.8 (b) 0.0078 (c) 0.078 (d) 0.78
34. 34.0.43 × 7 — where does the decimal point go? (a) 30.1 (b) 3.01 (c) 0.301 (d) 0.0301
35. 35.0.53 × 2.5 — where does the decimal point go? (a) 1.325 (b) 0.1325 (c) 0.01325 (d) 13.25
36. 36.0.87 × 0.5 — where does the decimal point go? (a) 4.35 (b) 0.435 (c) 0.0435 (d) 0.00435
37. 37.1.7 × 4.1 — where does the decimal point go? (a) 0.697 (b) 0.0697 (c) 6.97 (d) 69.7
38. 38.5.5 × 9 — where does the decimal point go? (a) 0.495 (b) 49.5 (c) 495 (d) 4.95
39. 39.9.3 × 4.8 — where does the decimal point go? (a) 4.464 (b) 446.4 (c) 0.4464 (d) 44.64
40. 40.3.6 × 43 — where does the decimal point go? (a) 1.548 (b) 154.8 (c) 15.48 (d) 1548

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