Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 740 · 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. 1.4.1 × 46 — where does the decimal point go? (a) 1.886 (b) 1886 (c) 18.86 (d) 188.6
2. 2.1.4 × 3 — where does the decimal point go? (a) 42 (b) 4.2 (c) 0.42 (d) 0.042
3. 3.7.9 × 11 — where does the decimal point go? (a) 86.9 (b) 8.69 (c) 0.869 (d) 869
4. 4.0.34 × 4.1 — where does the decimal point go? (a) 13.94 (b) 1.394 (c) 0.01394 (d) 0.1394
5. 5.7.1 × 2.4 — where does the decimal point go? (a) 17.04 (b) 170.4 (c) 0.1704 (d) 1.704
6. 6.5.9 × 14 — where does the decimal point go? (a) 82.6 (b) 0.826 (c) 826 (d) 8.26
7. 7.0.51 × 0.4 — where does the decimal point go? (a) 0.00204 (b) 0.204 (c) 2.04 (d) 0.0204
8. 8.1.4 × 23 — where does the decimal point go? (a) 3.22 (b) 322 (c) 0.322 (d) 32.2
9. 9.0.83 × 6 — where does the decimal point go? (a) 0.498 (b) 0.0498 (c) 4.98 (d) 49.8
10. 10.6.8 × 3.2 — where does the decimal point go? (a) 217.6 (b) 2.176 (c) 0.2176 (d) 21.76
11. 11.0.83 × 19 — where does the decimal point go? (a) 15.77 (b) 0.1577 (c) 157.7 (d) 1.577
12. 12.0.37 × 3 — where does the decimal point go? (a) 1.11 (b) 0.111 (c) 11.1 (d) 0.0111
13. 13.0.82 × 14 — where does the decimal point go? (a) 11.48 (b) 0.1148 (c) 1.148 (d) 114.8
14. 14.5.3 × 2.6 — where does the decimal point go? (a) 13.78 (b) 0.1378 (c) 1.378 (d) 137.8
15. 15.0.51 × 1.4 — where does the decimal point go? (a) 0.714 (b) 0.0714 (c) 0.00714 (d) 7.14
16. 16.0.39 × 3 — where does the decimal point go? (a) 11.7 (b) 0.0117 (c) 1.17 (d) 0.117
17. 17.4.8 × 48 — where does the decimal point go? (a) 2.304 (b) 230.4 (c) 23.04 (d) 2304
18. 18.0.73 × 3.1 — where does the decimal point go? (a) 0.02263 (b) 2.263 (c) 0.2263 (d) 22.63
19. 19.5.1 × 32 — where does the decimal point go? (a) 16.32 (b) 1632 (c) 163.2 (d) 1.632
20. 20.0.51 × 2.9 — where does the decimal point go? (a) 0.01479 (b) 1.479 (c) 0.1479 (d) 14.79
21. 21.0.38 × 8 — where does the decimal point go? (a) 30.4 (b) 0.0304 (c) 3.04 (d) 0.304
22. 22.0.12 × 7 — where does the decimal point go? (a) 8.4 (b) 0.0084 (c) 0.84 (d) 0.084
23. 23.0.78 × 0.4 — where does the decimal point go? (a) 0.00312 (b) 0.312 (c) 3.12 (d) 0.0312
24. 24.7.3 × 45 — where does the decimal point go? (a) 3.285 (b) 328.5 (c) 32.85 (d) 3285
25. 25.0.24 × 1.2 — where does the decimal point go? (a) 2.88 (b) 0.0288 (c) 0.00288 (d) 0.288
26. 26.3.1 × 46 — where does the decimal point go? (a) 142.6 (b) 14.26 (c) 1.426 (d) 1426
27. 27.2.8 × 8 — where does the decimal point go? (a) 22.4 (b) 2.24 (c) 224 (d) 0.224
28. 28.0.87 × 42 — where does the decimal point go? (a) 0.3654 (b) 3.654 (c) 365.4 (d) 36.54
29. 29.8.7 × 2.7 — where does the decimal point go? (a) 23.49 (b) 0.2349 (c) 2.349 (d) 234.9
30. 30.0.79 × 3.5 — where does the decimal point go? (a) 27.65 (b) 0.2765 (c) 0.02765 (d) 2.765
31. 31.1.2 × 0.6 — where does the decimal point go? (a) 0.0072 (b) 0.72 (c) 0.072 (d) 7.2
32. 32.9.6 × 27 — where does the decimal point go? (a) 259.2 (b) 2592 (c) 25.92 (d) 2.592
33. 33.0.26 × 0.8 — where does the decimal point go? (a) 0.208 (b) 0.0208 (c) 0.00208 (d) 2.08
34. 34.0.46 × 0.2 — where does the decimal point go? (a) 0.0092 (b) 0.00092 (c) 0.092 (d) 0.92
35. 35.4.2 × 22 — where does the decimal point go? (a) 0.924 (b) 924 (c) 9.24 (d) 92.4
36. 36.0.99 × 0.7 — where does the decimal point go? (a) 6.93 (b) 0.693 (c) 0.00693 (d) 0.0693
37. 37.6.3 × 3.8 — where does the decimal point go? (a) 23.94 (b) 0.2394 (c) 2.394 (d) 239.4
38. 38.0.44 × 0.7 — where does the decimal point go? (a) 0.308 (b) 0.00308 (c) 3.08 (d) 0.0308
39. 39.3.2 × 6 — where does the decimal point go? (a) 19.2 (b) 192 (c) 1.92 (d) 0.192
40. 40.0.37 × 0.5 — where does the decimal point go? (a) 0.00185 (b) 0.0185 (c) 1.85 (d) 0.185

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