Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 654 · 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. 1.2.9 × 0.6 — where does the decimal point go? (a) 0.0174 (b) 17.4 (c) 0.174 (d) 1.74
2. 2.3.5 × 31 — where does the decimal point go? (a) 1.085 (b) 1085 (c) 10.85 (d) 108.5
3. 3.3.6 × 49 — where does the decimal point go? (a) 1.764 (b) 176.4 (c) 17.64 (d) 1764
4. 4.0.14 × 3 — where does the decimal point go? (a) 0.0042 (b) 4.2 (c) 0.42 (d) 0.042
5. 5.3.4 × 6 — where does the decimal point go? (a) 204 (b) 2.04 (c) 20.4 (d) 0.204
6. 6.7.8 × 7 — where does the decimal point go? (a) 54.6 (b) 546 (c) 5.46 (d) 0.546
7. 7.6.8 × 2.6 — where does the decimal point go? (a) 0.1768 (b) 176.8 (c) 1.768 (d) 17.68
8. 8.5.1 × 42 — where does the decimal point go? (a) 21.42 (b) 2142 (c) 2.142 (d) 214.2
9. 9.5.2 × 24 — where does the decimal point go? (a) 1.248 (b) 1248 (c) 12.48 (d) 124.8
10. 10.0.13 × 17 — where does the decimal point go? (a) 2.21 (b) 0.0221 (c) 22.1 (d) 0.221
11. 11.8.9 × 7 — where does the decimal point go? (a) 0.623 (b) 6.23 (c) 623 (d) 62.3
12. 12.0.78 × 2 — where does the decimal point go? (a) 0.156 (b) 1.56 (c) 15.6 (d) 0.0156
13. 13.0.99 × 0.9 — where does the decimal point go? (a) 0.0891 (b) 0.891 (c) 0.00891 (d) 8.91
14. 14.7.1 × 1.3 — where does the decimal point go? (a) 9.23 (b) 0.923 (c) 92.3 (d) 0.0923
15. 15.8.1 × 21 — where does the decimal point go? (a) 1.701 (b) 1701 (c) 170.1 (d) 17.01
16. 16.1.7 × 21 — where does the decimal point go? (a) 3.57 (b) 357 (c) 35.7 (d) 0.357
17. 17.6.1 × 0.2 — where does the decimal point go? (a) 12.2 (b) 1.22 (c) 0.0122 (d) 0.122
18. 18.0.77 × 1.6 — where does the decimal point go? (a) 12.32 (b) 0.1232 (c) 0.01232 (d) 1.232
19. 19.0.21 × 1.5 — where does the decimal point go? (a) 3.15 (b) 0.00315 (c) 0.315 (d) 0.0315
20. 20.0.12 × 1.8 — where does the decimal point go? (a) 2.16 (b) 0.00216 (c) 0.0216 (d) 0.216
21. 21.0.48 × 2.9 — where does the decimal point go? (a) 1.392 (b) 0.1392 (c) 0.01392 (d) 13.92
22. 22.8.8 × 2 — where does the decimal point go? (a) 17.6 (b) 176 (c) 0.176 (d) 1.76
23. 23.0.36 × 11 — where does the decimal point go? (a) 0.0396 (b) 3.96 (c) 0.396 (d) 39.6
24. 24.0.41 × 4 — where does the decimal point go? (a) 1.64 (b) 0.0164 (c) 16.4 (d) 0.164
25. 25.0.39 × 6 — where does the decimal point go? (a) 23.4 (b) 0.0234 (c) 0.234 (d) 2.34
26. 26.7.9 × 1.3 — where does the decimal point go? (a) 10.27 (b) 1.027 (c) 0.1027 (d) 102.7
27. 27.6.6 × 38 — where does the decimal point go? (a) 2508 (b) 2.508 (c) 25.08 (d) 250.8
28. 28.0.64 × 9 — where does the decimal point go? (a) 5.76 (b) 0.576 (c) 57.6 (d) 0.0576
29. 29.0.48 × 14 — where does the decimal point go? (a) 0.0672 (b) 0.672 (c) 67.2 (d) 6.72
30. 30.0.24 × 39 — where does the decimal point go? (a) 0.936 (b) 93.6 (c) 9.36 (d) 0.0936
31. 31.7.9 × 19 — where does the decimal point go? (a) 15.01 (b) 1.501 (c) 1501 (d) 150.1
32. 32.9.5 × 5 — where does the decimal point go? (a) 0.475 (b) 4.75 (c) 475 (d) 47.5
33. 33.0.24 × 38 — where does the decimal point go? (a) 91.2 (b) 0.0912 (c) 9.12 (d) 0.912
34. 34.0.49 × 2.4 — where does the decimal point go? (a) 1.176 (b) 0.01176 (c) 0.1176 (d) 11.76
35. 35.5.8 × 4 — where does the decimal point go? (a) 0.232 (b) 23.2 (c) 2.32 (d) 232
36. 36.0.27 × 4 — where does the decimal point go? (a) 0.0108 (b) 1.08 (c) 0.108 (d) 10.8
37. 37.0.23 × 5 — where does the decimal point go? (a) 0.115 (b) 11.5 (c) 0.0115 (d) 1.15
38. 38.0.23 × 4.4 — where does the decimal point go? (a) 10.12 (b) 1.012 (c) 0.1012 (d) 0.01012
39. 39.0.98 × 0.4 — where does the decimal point go? (a) 3.92 (b) 0.00392 (c) 0.392 (d) 0.0392
40. 40.0.37 × 6 — where does the decimal point go? (a) 22.2 (b) 0.0222 (c) 0.222 (d) 2.22

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