Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 373 · 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. 1.57 + 46 + 16 + 81 =
2. 2.394 + 89 =
3. 3.347 + 37 =
4. 4.117 × 4 =
5. 5.449 − 46 =
6. 6.73 × 5 =
7. 7.7 + 3 + 1 + 2 =
8. 8.19 × 12 =
9. 9.82 + 24 + 78 + 27 =
10. 10.65 + 39 + 59 + 22 =
11. 11.8 + 9 + 5 + 1 + 9 =
12. 12.54 × 15 =
13. 13.Best estimate of 92 × 38? (a) 36000 (b) 360 (c) 3600 (d) 7200
14. 14.11 × 13 =
15. 15.8 + 6 + 1 + 4 =
16. 16.525 ÷ 25 =
17. 17.Best estimate of 58 × 71? (a) 420 (b) 42000 (c) 4200 (d) 8400
18. 18.15 × 14 =
19. 19.1% of 170 =
20. 20.40 + 79 + 46 + 52 =
21. 21.457 − 16 =
22. 22.20% of 440 =
23. 23.585 − 98 =
24. 24.9 + 7 + 3 + 3 =
25. 25.Best estimate of 59 × 28? (a) 180 (b) 1800 (c) 3600 (d) 18000
26. 26.₹20.10 − ₹12.95 =
27. 27.151 + 39 =
28. 28.190 ÷ 5 =
29. 29.Best estimate of 698 × 4? (a) 5600 (b) 28000 (c) 2800 (d) 280
30. 30.79² =
31. 31.Best estimate of 22 × 18? (a) 400 (b) 40 (c) 800 (d) 4000
32. 32.8 + 4 + 1 + 2 + 3 =
33. 33.₹29.20 + ₹41.60 =
34. 34.910 ÷ 5 =
35. 35.Check with nines: 456 + 550 = 1014. Correct or wrong? (a) correct (b) wrong
36. 36.50% of 660 =
37. 37.13 × 13 =
38. 38.885 ÷ 5 =
39. 39.18 × 4 =
40. 40.262 − 27 =

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