Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 646 · 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. 1.0.17 × 1.1 — where does the decimal point go? (a) 0.00187 (b) 0.187 (c) 0.0187 (d) 1.87
2. 2.0.23 × 16 — where does the decimal point go? (a) 3.68 (b) 0.368 (c) 0.0368 (d) 36.8
3. 3.8.3 × 0.2 — where does the decimal point go? (a) 0.0166 (b) 0.166 (c) 16.6 (d) 1.66
4. 4.6.6 × 0.2 — where does the decimal point go? (a) 0.0132 (b) 0.132 (c) 13.2 (d) 1.32
5. 5.4.1 × 47 — where does the decimal point go? (a) 1.927 (b) 1927 (c) 192.7 (d) 19.27
6. 6.2.4 × 1.2 — where does the decimal point go? (a) 0.0288 (b) 28.8 (c) 2.88 (d) 0.288
7. 7.0.26 × 1.1 — where does the decimal point go? (a) 0.0286 (b) 0.00286 (c) 0.286 (d) 2.86
8. 8.0.74 × 0.2 — where does the decimal point go? (a) 0.00148 (b) 1.48 (c) 0.148 (d) 0.0148
9. 9.4.3 × 7 — where does the decimal point go? (a) 3.01 (b) 0.301 (c) 30.1 (d) 301
10. 10.0.38 × 0.4 — where does the decimal point go? (a) 0.152 (b) 0.00152 (c) 1.52 (d) 0.0152
11. 11.9.9 × 1.6 — where does the decimal point go? (a) 1.584 (b) 0.1584 (c) 15.84 (d) 158.4
12. 12.0.94 × 0.2 — where does the decimal point go? (a) 0.188 (b) 0.0188 (c) 0.00188 (d) 1.88
13. 13.6.9 × 0.7 — where does the decimal point go? (a) 0.483 (b) 0.0483 (c) 48.3 (d) 4.83
14. 14.3.1 × 47 — where does the decimal point go? (a) 1.457 (b) 1457 (c) 145.7 (d) 14.57
15. 15.0.34 × 0.9 — where does the decimal point go? (a) 0.0306 (b) 0.306 (c) 0.00306 (d) 3.06
16. 16.8.4 × 33 — where does the decimal point go? (a) 277.2 (b) 27.72 (c) 2772 (d) 2.772
17. 17.0.27 × 6 — where does the decimal point go? (a) 1.62 (b) 0.0162 (c) 16.2 (d) 0.162
18. 18.3.3 × 6 — where does the decimal point go? (a) 1.98 (b) 0.198 (c) 198 (d) 19.8
19. 19.0.51 × 5 — where does the decimal point go? (a) 0.0255 (b) 0.255 (c) 2.55 (d) 25.5
20. 20.2.8 × 1.2 — where does the decimal point go? (a) 0.336 (b) 33.6 (c) 0.0336 (d) 3.36
21. 21.0.87 × 3.3 — where does the decimal point go? (a) 0.2871 (b) 2.871 (c) 0.02871 (d) 28.71
22. 22.7.3 × 2 — where does the decimal point go? (a) 146 (b) 0.146 (c) 14.6 (d) 1.46
23. 23.0.78 × 0.9 — where does the decimal point go? (a) 0.702 (b) 0.0702 (c) 7.02 (d) 0.00702
24. 24.1.6 × 1.1 — where does the decimal point go? (a) 0.0176 (b) 0.176 (c) 17.6 (d) 1.76
25. 25.7.4 × 2 — where does the decimal point go? (a) 0.148 (b) 1.48 (c) 148 (d) 14.8
26. 26.0.14 × 0.6 — where does the decimal point go? (a) 0.084 (b) 0.00084 (c) 0.0084 (d) 0.84
27. 27.9.7 × 0.3 — where does the decimal point go? (a) 0.0291 (b) 0.291 (c) 29.1 (d) 2.91
28. 28.2.2 × 0.3 — where does the decimal point go? (a) 0.66 (b) 0.066 (c) 6.6 (d) 0.0066
29. 29.0.13 × 9 — where does the decimal point go? (a) 0.117 (b) 11.7 (c) 0.0117 (d) 1.17
30. 30.6.4 × 3.3 — where does the decimal point go? (a) 2.112 (b) 211.2 (c) 21.12 (d) 0.2112
31. 31.0.25 × 37 — where does the decimal point go? (a) 92.5 (b) 0.0925 (c) 9.25 (d) 0.925
32. 32.9.4 × 11 — where does the decimal point go? (a) 103.4 (b) 1034 (c) 1.034 (d) 10.34
33. 33.1.7 × 1.9 — where does the decimal point go? (a) 0.0323 (b) 0.323 (c) 3.23 (d) 32.3
34. 34.3.2 × 0.9 — where does the decimal point go? (a) 0.288 (b) 0.0288 (c) 28.8 (d) 2.88
35. 35.0.73 × 0.3 — where does the decimal point go? (a) 0.00219 (b) 0.219 (c) 0.0219 (d) 2.19
36. 36.0.23 × 0.2 — where does the decimal point go? (a) 0.0046 (b) 0.046 (c) 0.00046 (d) 0.46
37. 37.0.38 × 2 — where does the decimal point go? (a) 0.0076 (b) 0.76 (c) 0.076 (d) 7.6
38. 38.0.14 × 1.8 — where does the decimal point go? (a) 0.252 (b) 0.0252 (c) 0.00252 (d) 2.52
39. 39.0.57 × 2.7 — where does the decimal point go? (a) 0.1539 (b) 15.39 (c) 0.01539 (d) 1.539
40. 40.3.3 × 0.4 — where does the decimal point go? (a) 13.2 (b) 1.32 (c) 0.0132 (d) 0.132

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