Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 883 · 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. 1.0.22 × 3 — where does the decimal point go? (a) 0.0066 (b) 6.6 (c) 0.66 (d) 0.066
2. 2.0.79 × 3.6 — where does the decimal point go? (a) 2.844 (b) 0.2844 (c) 28.44 (d) 0.02844
3. 3.0.54 × 16 — where does the decimal point go? (a) 8.64 (b) 0.864 (c) 0.0864 (d) 86.4
4. 4.8.2 × 0.2 — where does the decimal point go? (a) 1.64 (b) 0.164 (c) 0.0164 (d) 16.4
5. 5.4.9 × 7 — where does the decimal point go? (a) 3.43 (b) 34.3 (c) 0.343 (d) 343
6. 6.0.44 × 6 — where does the decimal point go? (a) 26.4 (b) 2.64 (c) 0.0264 (d) 0.264
7. 7.6.1 × 0.2 — where does the decimal point go? (a) 0.122 (b) 12.2 (c) 1.22 (d) 0.0122
8. 8.8.6 × 34 — where does the decimal point go? (a) 292.4 (b) 2.924 (c) 2924 (d) 29.24
9. 9.0.24 × 2 — where does the decimal point go? (a) 0.48 (b) 0.048 (c) 4.8 (d) 0.0048
10. 10.2.9 × 2 — where does the decimal point go? (a) 58 (b) 5.8 (c) 0.058 (d) 0.58
11. 11.2.3 × 1.8 — where does the decimal point go? (a) 0.414 (b) 41.4 (c) 0.0414 (d) 4.14
12. 12.0.37 × 5 — where does the decimal point go? (a) 1.85 (b) 0.0185 (c) 18.5 (d) 0.185
13. 13.0.95 × 17 — where does the decimal point go? (a) 1.615 (b) 161.5 (c) 16.15 (d) 0.1615
14. 14.5.9 × 2 — where does the decimal point go? (a) 1.18 (b) 11.8 (c) 0.118 (d) 118
15. 15.3.8 × 4.6 — where does the decimal point go? (a) 1.748 (b) 174.8 (c) 17.48 (d) 0.1748
16. 16.2.9 × 4.7 — where does the decimal point go? (a) 136.3 (b) 1.363 (c) 13.63 (d) 0.1363
17. 17.0.48 × 1.8 — where does the decimal point go? (a) 0.0864 (b) 0.864 (c) 0.00864 (d) 8.64
18. 18.7.7 × 4.6 — where does the decimal point go? (a) 3.542 (b) 35.42 (c) 0.3542 (d) 354.2
19. 19.7.6 × 6 — where does the decimal point go? (a) 45.6 (b) 4.56 (c) 456 (d) 0.456
20. 20.6.7 × 5 — where does the decimal point go? (a) 33.5 (b) 3.35 (c) 335 (d) 0.335
21. 21.0.68 × 0.7 — where does the decimal point go? (a) 0.0476 (b) 0.476 (c) 0.00476 (d) 4.76
22. 22.5.2 × 9 — where does the decimal point go? (a) 46.8 (b) 468 (c) 4.68 (d) 0.468
23. 23.9.9 × 8 — where does the decimal point go? (a) 792 (b) 0.792 (c) 79.2 (d) 7.92
24. 24.0.42 × 0.2 — where does the decimal point go? (a) 0.00084 (b) 0.084 (c) 0.84 (d) 0.0084
25. 25.0.15 × 7 — where does the decimal point go? (a) 0.0105 (b) 0.105 (c) 10.5 (d) 1.05
26. 26.9.4 × 4 — where does the decimal point go? (a) 0.376 (b) 3.76 (c) 37.6 (d) 376
27. 27.0.88 × 3.9 — where does the decimal point go? (a) 0.03432 (b) 0.3432 (c) 3.432 (d) 34.32
28. 28.8.5 × 0.5 — where does the decimal point go? (a) 42.5 (b) 0.0425 (c) 0.425 (d) 4.25
29. 29.0.89 × 0.8 — where does the decimal point go? (a) 0.712 (b) 7.12 (c) 0.0712 (d) 0.00712
30. 30.5.2 × 2 — where does the decimal point go? (a) 104 (b) 0.104 (c) 10.4 (d) 1.04
31. 31.0.39 × 0.6 — where does the decimal point go? (a) 2.34 (b) 0.0234 (c) 0.00234 (d) 0.234
32. 32.0.74 × 3.9 — where does the decimal point go? (a) 2.886 (b) 0.2886 (c) 0.02886 (d) 28.86
33. 33.4.3 × 32 — where does the decimal point go? (a) 137.6 (b) 13.76 (c) 1376 (d) 1.376
34. 34.3.5 × 17 — where does the decimal point go? (a) 59.5 (b) 5.95 (c) 0.595 (d) 595
35. 35.0.57 × 38 — where does the decimal point go? (a) 21.66 (b) 2.166 (c) 0.2166 (d) 216.6
36. 36.7.7 × 1.8 — where does the decimal point go? (a) 0.1386 (b) 1.386 (c) 13.86 (d) 138.6
37. 37.3.7 × 0.3 — where does the decimal point go? (a) 1.11 (b) 11.1 (c) 0.111 (d) 0.0111
38. 38.0.43 × 15 — where does the decimal point go? (a) 0.645 (b) 0.0645 (c) 64.5 (d) 6.45
39. 39.7.3 × 0.3 — where does the decimal point go? (a) 21.9 (b) 0.219 (c) 0.0219 (d) 2.19
40. 40.0.24 × 0.2 — where does the decimal point go? (a) 0.048 (b) 0.00048 (c) 0.0048 (d) 0.48

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