Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 202 · 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. 1.5.8 × 3 — where does the decimal point go? (a) 17.4 (b) 1.74 (c) 0.174 (d) 174
2. 2.0.17 × 0.3 — where does the decimal point go? (a) 0.51 (b) 0.0051 (c) 0.051 (d) 0.00051
3. 3.0.69 × 3 — where does the decimal point go? (a) 0.207 (b) 2.07 (c) 0.0207 (d) 20.7
4. 4.4.9 × 3.7 — where does the decimal point go? (a) 0.1813 (b) 18.13 (c) 1.813 (d) 181.3
5. 5.0.12 × 3 — where does the decimal point go? (a) 0.36 (b) 0.036 (c) 0.0036 (d) 3.6
6. 6.5.7 × 44 — where does the decimal point go? (a) 2.508 (b) 25.08 (c) 2508 (d) 250.8
7. 7.0.73 × 7 — where does the decimal point go? (a) 5.11 (b) 0.0511 (c) 0.511 (d) 51.1
8. 8.2.5 × 2.7 — where does the decimal point go? (a) 67.5 (b) 0.675 (c) 0.0675 (d) 6.75
9. 9.0.14 × 4.9 — where does the decimal point go? (a) 0.686 (b) 0.0686 (c) 0.00686 (d) 6.86
10. 10.0.62 × 0.3 — where does the decimal point go? (a) 0.00186 (b) 0.0186 (c) 1.86 (d) 0.186
11. 11.2.6 × 0.7 — where does the decimal point go? (a) 0.182 (b) 0.0182 (c) 1.82 (d) 18.2
12. 12.1.3 × 8 — where does the decimal point go? (a) 0.104 (b) 1.04 (c) 104 (d) 10.4
13. 13.0.69 × 29 — where does the decimal point go? (a) 200.1 (b) 0.2001 (c) 20.01 (d) 2.001
14. 14.1.7 × 3.5 — where does the decimal point go? (a) 0.0595 (b) 59.5 (c) 5.95 (d) 0.595
15. 15.3.1 × 8 — where does the decimal point go? (a) 248 (b) 2.48 (c) 24.8 (d) 0.248
16. 16.2.2 × 0.2 — where does the decimal point go? (a) 0.044 (b) 4.4 (c) 0.0044 (d) 0.44
17. 17.7.4 × 4 — where does the decimal point go? (a) 29.6 (b) 296 (c) 2.96 (d) 0.296
18. 18.0.33 × 0.6 — where does the decimal point go? (a) 0.00198 (b) 0.198 (c) 1.98 (d) 0.0198
19. 19.6.3 × 0.7 — where does the decimal point go? (a) 44.1 (b) 0.441 (c) 0.0441 (d) 4.41
20. 20.0.57 × 8 — where does the decimal point go? (a) 4.56 (b) 0.456 (c) 45.6 (d) 0.0456
21. 21.2.1 × 13 — where does the decimal point go? (a) 273 (b) 2.73 (c) 0.273 (d) 27.3
22. 22.2.9 × 0.6 — where does the decimal point go? (a) 1.74 (b) 0.174 (c) 17.4 (d) 0.0174
23. 23.0.32 × 1.3 — where does the decimal point go? (a) 0.00416 (b) 4.16 (c) 0.416 (d) 0.0416
24. 24.5.5 × 4.1 — where does the decimal point go? (a) 2.255 (b) 225.5 (c) 22.55 (d) 0.2255
25. 25.0.93 × 0.2 — where does the decimal point go? (a) 1.86 (b) 0.0186 (c) 0.186 (d) 0.00186
26. 26.0.89 × 23 — where does the decimal point go? (a) 0.2047 (b) 2.047 (c) 204.7 (d) 20.47
27. 27.8.3 × 4 — where does the decimal point go? (a) 0.332 (b) 33.2 (c) 3.32 (d) 332
28. 28.0.51 × 4 — where does the decimal point go? (a) 0.204 (b) 2.04 (c) 20.4 (d) 0.0204
29. 29.0.82 × 0.6 — where does the decimal point go? (a) 0.492 (b) 0.00492 (c) 0.0492 (d) 4.92
30. 30.0.86 × 16 — where does the decimal point go? (a) 13.76 (b) 137.6 (c) 0.1376 (d) 1.376
31. 31.0.67 × 5 — where does the decimal point go? (a) 3.35 (b) 0.335 (c) 0.0335 (d) 33.5
32. 32.1.5 × 29 — where does the decimal point go? (a) 43.5 (b) 435 (c) 4.35 (d) 0.435
33. 33.0.66 × 37 — where does the decimal point go? (a) 0.2442 (b) 244.2 (c) 2.442 (d) 24.42
34. 34.7.4 × 2.1 — where does the decimal point go? (a) 0.1554 (b) 1.554 (c) 155.4 (d) 15.54
35. 35.0.52 × 3 — where does the decimal point go? (a) 0.156 (b) 15.6 (c) 1.56 (d) 0.0156
36. 36.1.6 × 49 — where does the decimal point go? (a) 7.84 (b) 784 (c) 78.4 (d) 0.784
37. 37.0.98 × 1.6 — where does the decimal point go? (a) 15.68 (b) 0.01568 (c) 1.568 (d) 0.1568
38. 38.0.28 × 19 — where does the decimal point go? (a) 5.32 (b) 0.0532 (c) 0.532 (d) 53.2
39. 39.0.59 × 45 — where does the decimal point go? (a) 26.55 (b) 2.655 (c) 265.5 (d) 0.2655
40. 40.8.4 × 44 — where does the decimal point go? (a) 36.96 (b) 3.696 (c) 3696 (d) 369.6

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