Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 226 · 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. 1.0.24 × 0.2 — where does the decimal point go? (a) 0.0048 (b) 0.048 (c) 0.00048 (d) 0.48
2. 2.0.26 × 0.6 — where does the decimal point go? (a) 0.0156 (b) 0.156 (c) 0.00156 (d) 1.56
3. 3.1.7 × 0.2 — where does the decimal point go? (a) 0.0034 (b) 3.4 (c) 0.34 (d) 0.034
4. 4.0.19 × 21 — where does the decimal point go? (a) 0.399 (b) 3.99 (c) 0.0399 (d) 39.9
5. 5.0.31 × 0.2 — where does the decimal point go? (a) 0.62 (b) 0.062 (c) 0.0062 (d) 0.00062
6. 6.0.28 × 2.3 — where does the decimal point go? (a) 0.644 (b) 0.0644 (c) 0.00644 (d) 6.44
7. 7.0.15 × 9 — where does the decimal point go? (a) 0.0135 (b) 13.5 (c) 1.35 (d) 0.135
8. 8.8.4 × 2.4 — where does the decimal point go? (a) 20.16 (b) 2.016 (c) 201.6 (d) 0.2016
9. 9.0.83 × 6 — where does the decimal point go? (a) 49.8 (b) 4.98 (c) 0.0498 (d) 0.498
10. 10.0.53 × 0.5 — where does the decimal point go? (a) 0.265 (b) 0.0265 (c) 0.00265 (d) 2.65
11. 11.0.31 × 8 — where does the decimal point go? (a) 2.48 (b) 0.0248 (c) 24.8 (d) 0.248
12. 12.2.1 × 29 — where does the decimal point go? (a) 0.609 (b) 609 (c) 6.09 (d) 60.9
13. 13.8.8 × 19 — where does the decimal point go? (a) 167.2 (b) 16.72 (c) 1672 (d) 1.672
14. 14.6.4 × 22 — where does the decimal point go? (a) 140.8 (b) 1408 (c) 1.408 (d) 14.08
15. 15.0.91 × 3.2 — where does the decimal point go? (a) 2.912 (b) 29.12 (c) 0.02912 (d) 0.2912
16. 16.3.1 × 3.2 — where does the decimal point go? (a) 99.2 (b) 0.0992 (c) 0.992 (d) 9.92
17. 17.4.4 × 2.1 — where does the decimal point go? (a) 92.4 (b) 0.924 (c) 0.0924 (d) 9.24
18. 18.2.6 × 9 — where does the decimal point go? (a) 23.4 (b) 234 (c) 2.34 (d) 0.234
19. 19.0.77 × 3.3 — where does the decimal point go? (a) 25.41 (b) 0.02541 (c) 2.541 (d) 0.2541
20. 20.0.68 × 6 — where does the decimal point go? (a) 4.08 (b) 0.408 (c) 0.0408 (d) 40.8
21. 21.3.6 × 2.4 — where does the decimal point go? (a) 0.0864 (b) 8.64 (c) 86.4 (d) 0.864
22. 22.3.9 × 3.2 — where does the decimal point go? (a) 124.8 (b) 0.1248 (c) 1.248 (d) 12.48
23. 23.0.95 × 0.3 — where does the decimal point go? (a) 0.00285 (b) 0.0285 (c) 0.285 (d) 2.85
24. 24.9.2 × 0.9 — where does the decimal point go? (a) 0.828 (b) 0.0828 (c) 82.8 (d) 8.28
25. 25.3.8 × 3.8 — where does the decimal point go? (a) 0.1444 (b) 14.44 (c) 144.4 (d) 1.444
26. 26.5.3 × 8 — where does the decimal point go? (a) 424 (b) 42.4 (c) 4.24 (d) 0.424
27. 27.9.7 × 3 — where does the decimal point go? (a) 291 (b) 29.1 (c) 0.291 (d) 2.91
28. 28.5.2 × 0.6 — where does the decimal point go? (a) 0.312 (b) 3.12 (c) 0.0312 (d) 31.2
29. 29.0.59 × 6 — where does the decimal point go? (a) 0.354 (b) 0.0354 (c) 35.4 (d) 3.54
30. 30.0.96 × 1.7 — where does the decimal point go? (a) 0.01632 (b) 0.1632 (c) 16.32 (d) 1.632
31. 31.0.65 × 7 — where does the decimal point go? (a) 0.455 (b) 45.5 (c) 0.0455 (d) 4.55
32. 32.9.2 × 2 — where does the decimal point go? (a) 1.84 (b) 184 (c) 0.184 (d) 18.4
33. 33.0.85 × 0.3 — where does the decimal point go? (a) 0.255 (b) 2.55 (c) 0.00255 (d) 0.0255
34. 34.0.34 × 3 — where does the decimal point go? (a) 0.0102 (b) 10.2 (c) 1.02 (d) 0.102
35. 35.4.3 × 26 — where does the decimal point go? (a) 11.18 (b) 1.118 (c) 1118 (d) 111.8
36. 36.0.89 × 4 — where does the decimal point go? (a) 0.356 (b) 3.56 (c) 35.6 (d) 0.0356
37. 37.0.36 × 36 — where does the decimal point go? (a) 129.6 (b) 0.1296 (c) 1.296 (d) 12.96
38. 38.9.8 × 3 — where does the decimal point go? (a) 2.94 (b) 29.4 (c) 0.294 (d) 294
39. 39.0.78 × 44 — where does the decimal point go? (a) 34.32 (b) 343.2 (c) 3.432 (d) 0.3432
40. 40.0.79 × 45 — where does the decimal point go? (a) 0.3555 (b) 355.5 (c) 35.55 (d) 3.555

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