Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 511 · 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. 1.0.13 × 4 — where does the decimal point go? (a) 0.52 (b) 0.0052 (c) 0.052 (d) 5.2
2. 2.3.4 × 6 — where does the decimal point go? (a) 20.4 (b) 0.204 (c) 204 (d) 2.04
3. 3.4.7 × 9 — where does the decimal point go? (a) 4.23 (b) 42.3 (c) 0.423 (d) 423
4. 4.0.34 × 2 — where does the decimal point go? (a) 0.068 (b) 6.8 (c) 0.68 (d) 0.0068
5. 5.0.88 × 3 — where does the decimal point go? (a) 2.64 (b) 0.0264 (c) 26.4 (d) 0.264
6. 6.2.4 × 0.4 — where does the decimal point go? (a) 0.96 (b) 0.096 (c) 0.0096 (d) 9.6
7. 7.3.7 × 0.2 — where does the decimal point go? (a) 7.4 (b) 0.074 (c) 0.0074 (d) 0.74
8. 8.6.1 × 5 — where does the decimal point go? (a) 3.05 (b) 30.5 (c) 0.305 (d) 305
9. 9.0.85 × 4.5 — where does the decimal point go? (a) 38.25 (b) 0.3825 (c) 0.03825 (d) 3.825
10. 10.0.27 × 48 — where does the decimal point go? (a) 12.96 (b) 1.296 (c) 0.1296 (d) 129.6
11. 11.4.8 × 8 — where does the decimal point go? (a) 0.384 (b) 3.84 (c) 38.4 (d) 384
12. 12.0.13 × 0.6 — where does the decimal point go? (a) 0.078 (b) 0.00078 (c) 0.78 (d) 0.0078
13. 13.1.3 × 7 — where does the decimal point go? (a) 91 (b) 0.91 (c) 9.1 (d) 0.091
14. 14.0.76 × 12 — where does the decimal point go? (a) 0.912 (b) 0.0912 (c) 91.2 (d) 9.12
15. 15.0.84 × 16 — where does the decimal point go? (a) 13.44 (b) 134.4 (c) 1.344 (d) 0.1344
16. 16.0.47 × 22 — where does the decimal point go? (a) 10.34 (b) 103.4 (c) 1.034 (d) 0.1034
17. 17.0.88 × 0.2 — where does the decimal point go? (a) 0.0176 (b) 0.00176 (c) 0.176 (d) 1.76
18. 18.4.7 × 1.4 — where does the decimal point go? (a) 6.58 (b) 0.0658 (c) 0.658 (d) 65.8
19. 19.0.29 × 0.3 — where does the decimal point go? (a) 0.0087 (b) 0.00087 (c) 0.87 (d) 0.087
20. 20.7.5 × 0.9 — where does the decimal point go? (a) 0.0675 (b) 6.75 (c) 0.675 (d) 67.5
21. 21.0.21 × 2 — where does the decimal point go? (a) 0.0042 (b) 0.42 (c) 0.042 (d) 4.2
22. 22.0.56 × 3 — where does the decimal point go? (a) 16.8 (b) 0.0168 (c) 1.68 (d) 0.168
23. 23.4.5 × 3.5 — where does the decimal point go? (a) 0.1575 (b) 15.75 (c) 1.575 (d) 157.5
24. 24.0.84 × 47 — where does the decimal point go? (a) 3.948 (b) 394.8 (c) 39.48 (d) 0.3948
25. 25.0.25 × 0.3 — where does the decimal point go? (a) 0.00075 (b) 0.75 (c) 0.075 (d) 0.0075
26. 26.9.6 × 0.7 — where does the decimal point go? (a) 6.72 (b) 0.0672 (c) 67.2 (d) 0.672
27. 27.0.49 × 0.9 — where does the decimal point go? (a) 0.00441 (b) 0.0441 (c) 0.441 (d) 4.41
28. 28.0.65 × 0.7 — where does the decimal point go? (a) 0.455 (b) 4.55 (c) 0.00455 (d) 0.0455
29. 29.0.33 × 34 — where does the decimal point go? (a) 112.2 (b) 11.22 (c) 0.1122 (d) 1.122
30. 30.2.3 × 0.7 — where does the decimal point go? (a) 1.61 (b) 0.161 (c) 16.1 (d) 0.0161
31. 31.5.5 × 39 — where does the decimal point go? (a) 2145 (b) 2.145 (c) 21.45 (d) 214.5
32. 32.8.7 × 3 — where does the decimal point go? (a) 261 (b) 0.261 (c) 26.1 (d) 2.61
33. 33.0.41 × 2.9 — where does the decimal point go? (a) 0.01189 (b) 0.1189 (c) 1.189 (d) 11.89
34. 34.0.84 × 4.6 — where does the decimal point go? (a) 0.03864 (b) 3.864 (c) 38.64 (d) 0.3864
35. 35.7.8 × 42 — where does the decimal point go? (a) 32.76 (b) 3276 (c) 327.6 (d) 3.276
36. 36.0.75 × 0.3 — where does the decimal point go? (a) 0.0225 (b) 0.225 (c) 2.25 (d) 0.00225
37. 37.0.36 × 2 — where does the decimal point go? (a) 0.72 (b) 0.0072 (c) 0.072 (d) 7.2
38. 38.0.23 × 2.3 — where does the decimal point go? (a) 0.529 (b) 0.0529 (c) 0.00529 (d) 5.29
39. 39.0.59 × 42 — where does the decimal point go? (a) 247.8 (b) 0.2478 (c) 24.78 (d) 2.478
40. 40.7.9 × 7 — where does the decimal point go? (a) 55.3 (b) 0.553 (c) 553 (d) 5.53

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