Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 116 · 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. 1.78 × 4 =
2. 2.170 − 58 =
3. 3.17 × 15 =
4. 4.1275 ÷ 25 =
5. 5.27 × 4 =
6. 6.Best estimate of 18 × 28? (a) 6000 (b) 600 (c) 1200 (d) 60
7. 7.15% of 500 =
8. 8.21² =
9. 9.62 × 4 =
10. 10.4 + 5 + 6 + 1 =
11. 11.500 ÷ 50 =
12. 12.59² =
13. 13.83 + 44 + 25 + 51 =
14. 14.18 × 8 =
15. 15.Best estimate of 697 × 5? (a) 35000 (b) 350 (c) 7000 (d) 3500
16. 16.49 × 15 =
17. 17.392 + 89 =
18. 18.Check with nines: 248 + 823 = 1071. Correct or wrong? (a) wrong (b) correct
19. 19.Check with nines: 317 + 246 = 571. Correct or wrong? (a) correct (b) wrong
20. 20.1750 ÷ 50 =
21. 21.₹16.30 − ₹4.60 =
22. 22.42 × 15 =
23. 23.101 + 89 =
24. 24.29 + 78 + 47 + 46 =
25. 25.₹69.15 + ₹14.05 =
26. 26.27 + 58 + 71 + 42 =
27. 27.50% of 180 =
28. 28.Check with nines: 12 × 43 = 516. Correct or wrong? (a) wrong (b) correct
29. 29.765 ÷ 5 =
30. 30.559 − 88 =
31. 31.15 × 15 =
32. 32.94 − 39 =
33. 33.Best estimate of 49 × 68? (a) 35000 (b) 7000 (c) 350 (d) 3500
34. 34.Check with nines: 31 × 14 = 434. Correct or wrong? (a) wrong (b) correct
35. 35.Best estimate of 902 × 7? (a) 12600 (b) 630 (c) 6300 (d) 63000
36. 36.2 + 8 + 2 + 7 =
37. 37.297 − 36 =
38. 38.14 × 16 =
39. 39.12 × 12 =
40. 40.915 ÷ 5 =

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