Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 41 · 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. 1.1.8 × 9 — where does the decimal point go? (a) 1.62 (b) 162 (c) 0.162 (d) 16.2
2. 2.4.1 × 19 — where does the decimal point go? (a) 779 (b) 77.9 (c) 7.79 (d) 0.779
3. 3.2.2 × 8 — where does the decimal point go? (a) 17.6 (b) 0.176 (c) 1.76 (d) 176
4. 4.8.7 × 3.4 — where does the decimal point go? (a) 0.2958 (b) 29.58 (c) 2.958 (d) 295.8
5. 5.6.2 × 14 — where does the decimal point go? (a) 8.68 (b) 0.868 (c) 86.8 (d) 868
6. 6.9.6 × 0.9 — where does the decimal point go? (a) 86.4 (b) 8.64 (c) 0.864 (d) 0.0864
7. 7.0.29 × 43 — where does the decimal point go? (a) 12.47 (b) 124.7 (c) 1.247 (d) 0.1247
8. 8.9.1 × 15 — where does the decimal point go? (a) 13.65 (b) 136.5 (c) 1.365 (d) 1365
9. 9.1.4 × 3 — where does the decimal point go? (a) 4.2 (b) 0.042 (c) 42 (d) 0.42
10. 10.2.3 × 0.4 — where does the decimal point go? (a) 0.092 (b) 0.92 (c) 0.0092 (d) 9.2
11. 11.0.27 × 0.9 — where does the decimal point go? (a) 0.0243 (b) 0.00243 (c) 2.43 (d) 0.243
12. 12.0.19 × 12 — where does the decimal point go? (a) 2.28 (b) 0.228 (c) 22.8 (d) 0.0228
13. 13.0.64 × 0.3 — where does the decimal point go? (a) 0.192 (b) 0.00192 (c) 1.92 (d) 0.0192
14. 14.0.53 × 0.4 — where does the decimal point go? (a) 2.12 (b) 0.0212 (c) 0.212 (d) 0.00212
15. 15.3.4 × 0.3 — where does the decimal point go? (a) 0.102 (b) 0.0102 (c) 1.02 (d) 10.2
16. 16.6.7 × 4 — where does the decimal point go? (a) 26.8 (b) 0.268 (c) 2.68 (d) 268
17. 17.0.26 × 2 — where does the decimal point go? (a) 5.2 (b) 0.0052 (c) 0.052 (d) 0.52
18. 18.0.84 × 3.4 — where does the decimal point go? (a) 28.56 (b) 0.2856 (c) 0.02856 (d) 2.856
19. 19.7.9 × 3 — where does the decimal point go? (a) 237 (b) 0.237 (c) 23.7 (d) 2.37
20. 20.0.95 × 2.9 — where does the decimal point go? (a) 0.02755 (b) 0.2755 (c) 2.755 (d) 27.55
21. 21.7.7 × 2.8 — where does the decimal point go? (a) 0.2156 (b) 21.56 (c) 2.156 (d) 215.6
22. 22.6.1 × 4.3 — where does the decimal point go? (a) 262.3 (b) 0.2623 (c) 2.623 (d) 26.23
23. 23.2.1 × 26 — where does the decimal point go? (a) 546 (b) 0.546 (c) 54.6 (d) 5.46
24. 24.0.14 × 3.4 — where does the decimal point go? (a) 0.476 (b) 0.0476 (c) 0.00476 (d) 4.76
25. 25.0.49 × 0.6 — where does the decimal point go? (a) 0.0294 (b) 0.00294 (c) 2.94 (d) 0.294
26. 26.0.93 × 1.8 — where does the decimal point go? (a) 1.674 (b) 0.01674 (c) 16.74 (d) 0.1674
27. 27.3.5 × 21 — where does the decimal point go? (a) 7.35 (b) 73.5 (c) 0.735 (d) 735
28. 28.3.7 × 2 — where does the decimal point go? (a) 0.074 (b) 7.4 (c) 74 (d) 0.74
29. 29.0.53 × 1.8 — where does the decimal point go? (a) 0.0954 (b) 0.00954 (c) 0.954 (d) 9.54
30. 30.4.2 × 0.7 — where does the decimal point go? (a) 0.0294 (b) 2.94 (c) 0.294 (d) 29.4
31. 31.0.33 × 3.1 — where does the decimal point go? (a) 1.023 (b) 0.1023 (c) 10.23 (d) 0.01023
32. 32.0.26 × 3.4 — where does the decimal point go? (a) 0.00884 (b) 0.884 (c) 8.84 (d) 0.0884
33. 33.7.2 × 21 — where does the decimal point go? (a) 15.12 (b) 1512 (c) 151.2 (d) 1.512
34. 34.0.43 × 9 — where does the decimal point go? (a) 3.87 (b) 0.387 (c) 0.0387 (d) 38.7
35. 35.0.22 × 4.9 — where does the decimal point go? (a) 1.078 (b) 0.01078 (c) 10.78 (d) 0.1078
36. 36.0.23 × 4.9 — where does the decimal point go? (a) 0.1127 (b) 1.127 (c) 11.27 (d) 0.01127
37. 37.7.1 × 6 — where does the decimal point go? (a) 42.6 (b) 4.26 (c) 426 (d) 0.426
38. 38.1.9 × 0.4 — where does the decimal point go? (a) 0.76 (b) 0.076 (c) 0.0076 (d) 7.6
39. 39.0.92 × 7 — where does the decimal point go? (a) 6.44 (b) 0.644 (c) 0.0644 (d) 64.4
40. 40.6.2 × 2 — where does the decimal point go? (a) 124 (b) 0.124 (c) 12.4 (d) 1.24

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