Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 95 · 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. 1.960 ÷ 5 =
2. 2.19 × 11 =
3. 3.255 ÷ 5 =
4. 4.87 + 35 + 78 + 66 =
5. 5.Check with nines: 138 + 389 = 527. Correct or wrong? (a) correct (b) wrong
6. 6.137 × 4 =
7. 7.79² =
8. 8.18 × 19 =
9. 9.68 × 50 =
10. 10.₹40.75 − ₹26.95 =
11. 11.66 + 79 + 19 + 33 =
12. 12.128 × 4 =
13. 13.₹86.15 − ₹49.60 =
14. 14.1% of 220 =
15. 15.54 × 15 =
16. 16.17 + 50 + 64 + 79 =
17. 17.45 + 56 + 12 + 48 =
18. 18.25% of 100 =
19. 19.78 + 30 + 58 + 53 =
20. 20.324 + 57 =
21. 21.129 + 58 =
22. 22.₹95.50 − ₹17.60 =
23. 23.89² =
24. 24.2 + 4 + 5 + 5 =
25. 25.Best estimate of 38 × 19? (a) 1600 (b) 800 (c) 80 (d) 8000
26. 26.426 − 79 =
27. 27.25% of 240 =
28. 28.22 + 48 + 58 + 40 =
29. 29.394 + 37 =
30. 30.Best estimate of 901 × 4? (a) 7200 (b) 36000 (c) 360 (d) 3600
31. 31.268 + 89 =
32. 32.140 × 4 =
33. 33.89² =
34. 34.29² =
35. 35.Best estimate of 42 × 28? (a) 1200 (b) 12000 (c) 120 (d) 2400
36. 36.15 + 88 + 71 + 81 =
37. 37.Check with nines: 29 × 48 = 1392. Correct or wrong? (a) correct (b) wrong
38. 38.13 × 12 =
39. 39.283 + 57 =
40. 40.62 + 20 + 85 + 42 =

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