Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 512 · 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. 1.4 + 2 + 8 + 1 + 6 =
2. 2.₹14.10 + ₹18.90 =
3. 3.414 − 96 =
4. 4.151 − 86 =
5. 5.89² =
6. 6.25 × 15 =
7. 7.39 × 50 =
8. 8.14 × 18 =
9. 9.3 + 6 + 1 + 1 + 9 =
10. 10.20 × 5 =
11. 11.9 + 2 + 1 + 5 =
12. 12.7 + 2 + 5 + 3 =
13. 13.625 ÷ 25 =
14. 14.Best estimate of 301 × 3? (a) 9000 (b) 1800 (c) 90 (d) 900
15. 15.466 + 68 =
16. 16.470 − 87 =
17. 17.69 × 8 =
18. 18.53 + 14 + 63 + 78 =
19. 19.Check with nines: 60 × 82 = 4920. Correct or wrong? (a) correct (b) wrong
20. 20.Best estimate of 58 × 41? (a) 240 (b) 4800 (c) 2400 (d) 24000
21. 21.31² =
22. 22.₹86.10 − ₹32.95 =
23. 23.19² =
24. 24.Check with nines: 54 × 37 = 1996. Correct or wrong? (a) correct (b) wrong
25. 25.151 + 79 =
26. 26.980 ÷ 5 =
27. 27.13 × 18 =
28. 28.Check with nines: 420 + 235 = 655. Correct or wrong? (a) wrong (b) correct
29. 29.293 + 87 =
30. 30.1 + 4 + 9 + 3 + 4 =
31. 31.79² =
32. 32.₹69.90 + ₹37.20 =
33. 33.Check with nines: 78 × 90 = 7020. Correct or wrong? (a) wrong (b) correct
34. 34.259 − 26 =
35. 35.61² =
36. 36.Check with nines: 543 + 321 = 864. Correct or wrong? (a) wrong (b) correct
37. 37.50% of 840 =
38. 38.44 × 4 =
39. 39.218 + 17 =
40. 40.195 − 16 =

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