Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 821 · 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. 1.8.1 × 3.5 — where does the decimal point go? (a) 0.2835 (b) 283.5 (c) 2.835 (d) 28.35
2. 2.0.38 × 9 — where does the decimal point go? (a) 34.2 (b) 0.0342 (c) 3.42 (d) 0.342
3. 3.1.2 × 0.6 — where does the decimal point go? (a) 7.2 (b) 0.0072 (c) 0.72 (d) 0.072
4. 4.2.2 × 8 — where does the decimal point go? (a) 17.6 (b) 1.76 (c) 0.176 (d) 176
5. 5.0.71 × 27 — where does the decimal point go? (a) 1.917 (b) 0.1917 (c) 191.7 (d) 19.17
6. 6.0.34 × 1.6 — where does the decimal point go? (a) 0.00544 (b) 0.0544 (c) 5.44 (d) 0.544
7. 7.0.26 × 41 — where does the decimal point go? (a) 1.066 (b) 10.66 (c) 106.6 (d) 0.1066
8. 8.7.1 × 3 — where does the decimal point go? (a) 2.13 (b) 0.213 (c) 213 (d) 21.3
9. 9.3.3 × 7 — where does the decimal point go? (a) 23.1 (b) 0.231 (c) 2.31 (d) 231
10. 10.6.1 × 4 — where does the decimal point go? (a) 24.4 (b) 244 (c) 2.44 (d) 0.244
11. 11.1.6 × 0.7 — where does the decimal point go? (a) 0.0112 (b) 11.2 (c) 1.12 (d) 0.112
12. 12.0.73 × 0.5 — where does the decimal point go? (a) 3.65 (b) 0.365 (c) 0.0365 (d) 0.00365
13. 13.0.14 × 16 — where does the decimal point go? (a) 22.4 (b) 2.24 (c) 0.224 (d) 0.0224
14. 14.0.85 × 41 — where does the decimal point go? (a) 34.85 (b) 348.5 (c) 3.485 (d) 0.3485
15. 15.1.3 × 38 — where does the decimal point go? (a) 0.494 (b) 494 (c) 4.94 (d) 49.4
16. 16.8.6 × 0.4 — where does the decimal point go? (a) 3.44 (b) 0.0344 (c) 34.4 (d) 0.344
17. 17.0.17 × 2.1 — where does the decimal point go? (a) 0.00357 (b) 0.0357 (c) 3.57 (d) 0.357
18. 18.7.1 × 0.8 — where does the decimal point go? (a) 56.8 (b) 0.0568 (c) 0.568 (d) 5.68
19. 19.1.8 × 2.9 — where does the decimal point go? (a) 52.2 (b) 5.22 (c) 0.0522 (d) 0.522
20. 20.9.2 × 7 — where does the decimal point go? (a) 6.44 (b) 64.4 (c) 644 (d) 0.644
21. 21.0.91 × 0.5 — where does the decimal point go? (a) 0.455 (b) 0.00455 (c) 0.0455 (d) 4.55
22. 22.6.2 × 2 — where does the decimal point go? (a) 1.24 (b) 0.124 (c) 12.4 (d) 124
23. 23.6.2 × 9 — where does the decimal point go? (a) 55.8 (b) 5.58 (c) 558 (d) 0.558
24. 24.0.47 × 0.9 — where does the decimal point go? (a) 0.00423 (b) 4.23 (c) 0.0423 (d) 0.423
25. 25.0.29 × 0.9 — where does the decimal point go? (a) 0.0261 (b) 2.61 (c) 0.00261 (d) 0.261
26. 26.0.26 × 16 — where does the decimal point go? (a) 4.16 (b) 0.416 (c) 0.0416 (d) 41.6
27. 27.7.6 × 0.4 — where does the decimal point go? (a) 0.0304 (b) 0.304 (c) 30.4 (d) 3.04
28. 28.0.57 × 0.8 — where does the decimal point go? (a) 0.456 (b) 0.0456 (c) 0.00456 (d) 4.56
29. 29.5.9 × 7 — where does the decimal point go? (a) 41.3 (b) 0.413 (c) 4.13 (d) 413
30. 30.0.59 × 0.3 — where does the decimal point go? (a) 0.0177 (b) 1.77 (c) 0.00177 (d) 0.177
31. 31.3.8 × 2 — where does the decimal point go? (a) 0.076 (b) 0.76 (c) 76 (d) 7.6
32. 32.6.3 × 2.8 — where does the decimal point go? (a) 0.1764 (b) 17.64 (c) 176.4 (d) 1.764
33. 33.4.5 × 3 — where does the decimal point go? (a) 0.135 (b) 135 (c) 13.5 (d) 1.35
34. 34.9.3 × 4 — where does the decimal point go? (a) 3.72 (b) 0.372 (c) 37.2 (d) 372
35. 35.0.21 × 23 — where does the decimal point go? (a) 48.3 (b) 0.0483 (c) 0.483 (d) 4.83
36. 36.0.27 × 0.7 — where does the decimal point go? (a) 0.189 (b) 0.0189 (c) 0.00189 (d) 1.89
37. 37.0.19 × 46 — where does the decimal point go? (a) 0.874 (b) 87.4 (c) 8.74 (d) 0.0874
38. 38.0.78 × 32 — where does the decimal point go? (a) 24.96 (b) 249.6 (c) 2.496 (d) 0.2496
39. 39.3.2 × 3 — where does the decimal point go? (a) 0.096 (b) 96 (c) 0.96 (d) 9.6
40. 40.6.7 × 9 — where does the decimal point go? (a) 603 (b) 0.603 (c) 60.3 (d) 6.03

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