Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 372 · 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. 1.5 + 4 + 5 + 2 + 5 =
2. 2.54 × 15 =
3. 3.Best estimate of 41 × 28? (a) 12000 (b) 120 (c) 2400 (d) 1200
4. 4.₹14.30 + ₹49.95 =
5. 5.12 × 14 =
6. 6.53 + 21 + 74 + 11 =
7. 7.₹42.90 + ₹10.90 =
8. 8.218 + 58 =
9. 9.5% of 810 =
10. 10.188 + 47 =
11. 11.432 + 58 =
12. 12.42 × 8 =
13. 13.Check with nines: 79 × 64 = 5054. Correct or wrong? (a) wrong (b) correct
14. 14.135 × 4 =
15. 15.₹9.80 + ₹11.65 =
16. 16.Check with nines: 395 + 727 = 1122. Correct or wrong? (a) correct (b) wrong
17. 17.61² =
18. 18.87 + 28 =
19. 19.21² =
20. 20.81² =
21. 21.380 + 68 =
22. 22.₹94.50 + ₹48.95 =
23. 23.39² =
24. 24.3 + 6 + 7 + 5 =
25. 25.850 ÷ 50 =
26. 26.24 × 8 =
27. 27.182 − 37 =
28. 28.64 × 4 =
29. 29.Check with nines: 169 + 913 = 1090. Correct or wrong? (a) correct (b) wrong
30. 30.15 × 19 =
31. 31.17 × 15 =
32. 32.14 × 17 =
33. 33.₹38.05 + ₹6.25 =
34. 34.49² =
35. 35.22 × 8 =
36. 36.Best estimate of 81 × 89? (a) 7200 (b) 14400 (c) 72000 (d) 720
37. 37.15% of 120 =
38. 38.51² =
39. 39.1200 ÷ 25 =
40. 40.Best estimate of 898 × 8? (a) 14400 (b) 72000 (c) 7200 (d) 720

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