Decimal Point Trick Worksheet

Maths tricks trick 24: Where does the decimal point go? · Set 533 · 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. 1.9.6 × 0.3 — where does the decimal point go? (a) 0.0288 (b) 0.288 (c) 28.8 (d) 2.88
2. 2.0.16 × 0.3 — where does the decimal point go? (a) 0.48 (b) 0.00048 (c) 0.048 (d) 0.0048
3. 3.3.4 × 0.7 — where does the decimal point go? (a) 0.238 (b) 0.0238 (c) 2.38 (d) 23.8
4. 4.1.6 × 0.3 — where does the decimal point go? (a) 0.048 (b) 0.48 (c) 0.0048 (d) 4.8
5. 5.0.38 × 0.8 — where does the decimal point go? (a) 0.0304 (b) 3.04 (c) 0.00304 (d) 0.304
6. 6.9.3 × 11 — where does the decimal point go? (a) 102.3 (b) 1.023 (c) 10.23 (d) 1023
7. 7.9.7 × 5 — where does the decimal point go? (a) 0.485 (b) 48.5 (c) 485 (d) 4.85
8. 8.0.16 × 32 — where does the decimal point go? (a) 5.12 (b) 0.0512 (c) 0.512 (d) 51.2
9. 9.0.74 × 2.8 — where does the decimal point go? (a) 20.72 (b) 0.2072 (c) 0.02072 (d) 2.072
10. 10.1.3 × 2.9 — where does the decimal point go? (a) 37.7 (b) 0.0377 (c) 3.77 (d) 0.377
11. 11.6.3 × 0.7 — where does the decimal point go? (a) 44.1 (b) 0.0441 (c) 0.441 (d) 4.41
12. 12.0.31 × 4 — where does the decimal point go? (a) 0.124 (b) 12.4 (c) 1.24 (d) 0.0124
13. 13.9.3 × 0.3 — where does the decimal point go? (a) 2.79 (b) 0.0279 (c) 27.9 (d) 0.279
14. 14.0.18 × 34 — where does the decimal point go? (a) 0.612 (b) 0.0612 (c) 6.12 (d) 61.2
15. 15.0.83 × 3.3 — where does the decimal point go? (a) 0.02739 (b) 27.39 (c) 0.2739 (d) 2.739
16. 16.0.84 × 4.8 — where does the decimal point go? (a) 4.032 (b) 0.4032 (c) 0.04032 (d) 40.32
17. 17.3.3 × 2.9 — where does the decimal point go? (a) 95.7 (b) 0.957 (c) 0.0957 (d) 9.57
18. 18.2.3 × 0.3 — where does the decimal point go? (a) 6.9 (b) 0.069 (c) 0.0069 (d) 0.69
19. 19.3.9 × 1.1 — where does the decimal point go? (a) 0.429 (b) 0.0429 (c) 42.9 (d) 4.29
20. 20.2.7 × 1.3 — where does the decimal point go? (a) 0.351 (b) 35.1 (c) 3.51 (d) 0.0351
21. 21.0.88 × 8 — where does the decimal point go? (a) 7.04 (b) 0.0704 (c) 0.704 (d) 70.4
22. 22.7.8 × 8 — where does the decimal point go? (a) 624 (b) 62.4 (c) 6.24 (d) 0.624
23. 23.6.2 × 27 — where does the decimal point go? (a) 167.4 (b) 16.74 (c) 1674 (d) 1.674
24. 24.0.28 × 1.6 — where does the decimal point go? (a) 4.48 (b) 0.0448 (c) 0.448 (d) 0.00448
25. 25.1.2 × 2.7 — where does the decimal point go? (a) 0.0324 (b) 0.324 (c) 3.24 (d) 32.4
26. 26.2.3 × 0.2 — where does the decimal point go? (a) 0.0046 (b) 0.046 (c) 4.6 (d) 0.46
27. 27.7.1 × 32 — where does the decimal point go? (a) 22.72 (b) 227.2 (c) 2272 (d) 2.272
28. 28.3.1 × 0.9 — where does the decimal point go? (a) 0.0279 (b) 2.79 (c) 27.9 (d) 0.279
29. 29.0.12 × 4.6 — where does the decimal point go? (a) 0.00552 (b) 0.0552 (c) 0.552 (d) 5.52
30. 30.7.1 × 0.6 — where does the decimal point go? (a) 0.426 (b) 42.6 (c) 0.0426 (d) 4.26
31. 31.0.93 × 0.6 — where does the decimal point go? (a) 0.0558 (b) 5.58 (c) 0.558 (d) 0.00558
32. 32.4.6 × 38 — where does the decimal point go? (a) 1748 (b) 174.8 (c) 17.48 (d) 1.748
33. 33.1.9 × 9 — where does the decimal point go? (a) 171 (b) 0.171 (c) 1.71 (d) 17.1
34. 34.5.8 × 0.7 — where does the decimal point go? (a) 4.06 (b) 0.0406 (c) 0.406 (d) 40.6
35. 35.0.33 × 0.6 — where does the decimal point go? (a) 1.98 (b) 0.198 (c) 0.00198 (d) 0.0198
36. 36.0.67 × 1.8 — where does the decimal point go? (a) 0.1206 (b) 1.206 (c) 0.01206 (d) 12.06
37. 37.0.77 × 0.4 — where does the decimal point go? (a) 0.308 (b) 0.00308 (c) 0.0308 (d) 3.08
38. 38.5.3 × 12 — where does the decimal point go? (a) 6.36 (b) 63.6 (c) 0.636 (d) 636
39. 39.0.31 × 0.9 — where does the decimal point go? (a) 0.279 (b) 2.79 (c) 0.0279 (d) 0.00279
40. 40.0.26 × 3.4 — where does the decimal point go? (a) 0.884 (b) 0.0884 (c) 0.00884 (d) 8.84

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