Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 542 · 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 × 2.5 — where does the decimal point go? (a) 0.1025 (b) 1.025 (c) 102.5 (d) 10.25
2. 2.2.1 × 1.3 — where does the decimal point go? (a) 0.273 (b) 27.3 (c) 0.0273 (d) 2.73
3. 3.3.9 × 0.4 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 1.56 (d) 15.6
4. 4.2.6 × 2.8 — where does the decimal point go? (a) 0.0728 (b) 0.728 (c) 7.28 (d) 72.8
5. 5.0.86 × 3.9 — where does the decimal point go? (a) 0.3354 (b) 0.03354 (c) 33.54 (d) 3.354
6. 6.3.7 × 44 — where does the decimal point go? (a) 1.628 (b) 162.8 (c) 1628 (d) 16.28
7. 7.0.48 × 11 — where does the decimal point go? (a) 0.0528 (b) 5.28 (c) 0.528 (d) 52.8
8. 8.7.7 × 37 — where does the decimal point go? (a) 284.9 (b) 2.849 (c) 2849 (d) 28.49
9. 9.2.3 × 0.3 — where does the decimal point go? (a) 0.069 (b) 0.69 (c) 0.0069 (d) 6.9
10. 10.3.2 × 18 — where does the decimal point go? (a) 57.6 (b) 5.76 (c) 576 (d) 0.576
11. 11.4.3 × 0.9 — where does the decimal point go? (a) 38.7 (b) 0.387 (c) 0.0387 (d) 3.87
12. 12.1.6 × 42 — where does the decimal point go? (a) 672 (b) 67.2 (c) 0.672 (d) 6.72
13. 13.9.9 × 43 — where does the decimal point go? (a) 42.57 (b) 4257 (c) 425.7 (d) 4.257
14. 14.0.37 × 0.2 — where does the decimal point go? (a) 0.074 (b) 0.00074 (c) 0.74 (d) 0.0074
15. 15.0.83 × 4.8 — where does the decimal point go? (a) 3.984 (b) 0.03984 (c) 39.84 (d) 0.3984
16. 16.5.8 × 1.4 — where does the decimal point go? (a) 8.12 (b) 0.0812 (c) 0.812 (d) 81.2
17. 17.0.13 × 2.2 — where does the decimal point go? (a) 2.86 (b) 0.286 (c) 0.00286 (d) 0.0286
18. 18.3.6 × 49 — where does the decimal point go? (a) 1764 (b) 17.64 (c) 1.764 (d) 176.4
19. 19.8.5 × 0.7 — where does the decimal point go? (a) 5.95 (b) 0.595 (c) 0.0595 (d) 59.5
20. 20.4.4 × 3.3 — where does the decimal point go? (a) 0.1452 (b) 14.52 (c) 1.452 (d) 145.2
21. 21.0.39 × 4.1 — where does the decimal point go? (a) 1.599 (b) 15.99 (c) 0.01599 (d) 0.1599
22. 22.0.22 × 14 — where does the decimal point go? (a) 0.308 (b) 0.0308 (c) 30.8 (d) 3.08
23. 23.8.8 × 0.4 — where does the decimal point go? (a) 3.52 (b) 0.0352 (c) 35.2 (d) 0.352
24. 24.5.9 × 22 — where does the decimal point go? (a) 129.8 (b) 1298 (c) 1.298 (d) 12.98
25. 25.0.51 × 0.6 — where does the decimal point go? (a) 0.306 (b) 0.00306 (c) 0.0306 (d) 3.06
26. 26.4.1 × 1.7 — where does the decimal point go? (a) 0.697 (b) 0.0697 (c) 6.97 (d) 69.7
27. 27.0.15 × 19 — where does the decimal point go? (a) 2.85 (b) 28.5 (c) 0.285 (d) 0.0285
28. 28.0.76 × 0.7 — where does the decimal point go? (a) 0.0532 (b) 0.00532 (c) 0.532 (d) 5.32
29. 29.5.7 × 9 — where does the decimal point go? (a) 0.513 (b) 51.3 (c) 5.13 (d) 513
30. 30.4.8 × 0.2 — where does the decimal point go? (a) 0.0096 (b) 9.6 (c) 0.096 (d) 0.96
31. 31.0.12 × 4 — where does the decimal point go? (a) 0.0048 (b) 0.048 (c) 4.8 (d) 0.48
32. 32.0.32 × 4.8 — where does the decimal point go? (a) 1.536 (b) 0.1536 (c) 15.36 (d) 0.01536
33. 33.0.56 × 0.7 — where does the decimal point go? (a) 0.00392 (b) 0.392 (c) 3.92 (d) 0.0392
34. 34.0.92 × 1.8 — where does the decimal point go? (a) 0.1656 (b) 0.01656 (c) 1.656 (d) 16.56
35. 35.0.97 × 2 — where does the decimal point go? (a) 1.94 (b) 0.0194 (c) 0.194 (d) 19.4
36. 36.0.14 × 34 — where does the decimal point go? (a) 0.0476 (b) 47.6 (c) 0.476 (d) 4.76
37. 37.1.7 × 29 — where does the decimal point go? (a) 4.93 (b) 493 (c) 49.3 (d) 0.493
38. 38.8.4 × 0.7 — where does the decimal point go? (a) 0.0588 (b) 0.588 (c) 5.88 (d) 58.8
39. 39.9.9 × 5 — where does the decimal point go? (a) 0.495 (b) 495 (c) 49.5 (d) 4.95
40. 40.4.1 × 0.3 — where does the decimal point go? (a) 1.23 (b) 12.3 (c) 0.123 (d) 0.0123

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