Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 476 · 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. 1.123 − 57 =
2. 2.85 − 48 =
3. 3.12 + 13 + 37 + 67 =
4. 4.78 + 77 + 22 + 89 =
5. 5.14 × 16 =
6. 6.204 − 28 =
7. 7.427 − 36 =
8. 8.₹43.90 + ₹26.30 =
9. 9.13 + 74 + 68 + 35 =
10. 10.28 × 8 =
11. 11.22 × 4 =
12. 12.25 × 4 =
13. 13.Best estimate of 19 × 48? (a) 2000 (b) 10000 (c) 100 (d) 1000
14. 14.7 × 15 =
15. 15.41² =
16. 16.54 × 8 =
17. 17.29 × 5 =
18. 18.1 + 3 + 3 + 9 =
19. 19.20% of 690 =
20. 20.Check with nines: 909 + 619 = 1528. Correct or wrong? (a) correct (b) wrong
21. 21.₹69.50 + ₹7.75 =
22. 22.19 × 14 =
23. 23.Best estimate of 597 × 5? (a) 3000 (b) 300 (c) 6000 (d) 30000
24. 24.Check with nines: 99 × 36 = 3564. Correct or wrong? (a) wrong (b) correct
25. 25.91 × 5 =
26. 26.Best estimate of 81 × 18? (a) 3200 (b) 16000 (c) 1600 (d) 160
27. 27.89² =
28. 28.19 + 18 + 12 + 28 =
29. 29.13 × 17 =
30. 30.406 − 66 =
31. 31.1% of 350 =
32. 32.₹52.10 − ₹7.40 =
33. 33.₹60.35 − ₹22.25 =
34. 34.810 ÷ 5 =
35. 35.233 − 86 =
36. 36.128 − 37 =
37. 37.35 × 50 =
38. 38.100 ÷ 5 =
39. 39.5% of 840 =
40. 40.Check with nines: 478 + 169 = 647. Correct or wrong? (a) wrong (b) correct

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