Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 715 · 40 questions

The fast method (Spot the trick): A 7, 8 or 9 in the ones place → round and fix. × 4, 8, 5, 50 or 15 → doubling or halving tricks. ÷ 5, 25 or 50 → double first. A percentage → start from 10%. Checking or estimating → nines or rounding.

1. 1.Check with nines: 48 × 31 = 1495. Correct or wrong? (a) wrong (b) correct
2. 2.16 × 15 =
3. 3.13 × 16 =
4. 4.₹82.10 + ₹21.25 =
5. 5.32 × 15 =
6. 6.90 + 47 =
7. 7.Check with nines: 528 + 950 = 1477. Correct or wrong? (a) wrong (b) correct
8. 8.12 × 13 =
9. 9.3 + 7 + 1 + 7 + 9 =
10. 10.1 + 9 + 1 + 7 =
11. 11.41² =
12. 12.4 + 6 + 9 + 6 =
13. 13.108 × 4 =
14. 14.24 + 14 + 17 + 14 =
15. 15.69 + 14 + 86 + 29 =
16. 16.79² =
17. 17.30 + 33 + 21 + 78 =
18. 18.Check with nines: 366 + 403 = 768. Correct or wrong? (a) wrong (b) correct
19. 19.312 + 29 =
20. 20.₹51.65 − ₹5.60 =
21. 21.11 × 14 =
22. 22.5% of 520 =
23. 23.700 ÷ 5 =
24. 24.59 × 50 =
25. 25.11 + 47 + 85 + 40 =
26. 26.31 + 38 + 67 + 82 =
27. 27.27 × 4 =
28. 28.10% of 850 =
29. 29.Best estimate of 401 × 7? (a) 5600 (b) 2800 (c) 28000 (d) 280
30. 30.231 − 69 =
31. 31.17 × 11 =
32. 32.71 + 42 + 71 + 76 =
33. 33.Check with nines: 843 + 826 = 1669. Correct or wrong? (a) correct (b) wrong
34. 34.6 × 15 =
35. 35.9 × 15 =
36. 36.375 − 69 =
37. 37.256 − 96 =
38. 38.273 + 39 =
39. 39.1100 ÷ 25 =
40. 40.53 + 29 + 87 + 41 =

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