Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 385 · 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. 1.59² =
2. 2.275 ÷ 25 =
3. 3.50% of 870 =
4. 4.262 − 97 =
5. 5.Best estimate of 402 × 4? (a) 160 (b) 1600 (c) 16000 (d) 3200
6. 6.18 × 15 =
7. 7.37 × 8 =
8. 8.₹64.20 + ₹44.20 =
9. 9.50 + 11 + 39 + 79 =
10. 10.Check with nines: 50 × 39 = 1952. Correct or wrong? (a) correct (b) wrong
11. 11.67 × 5 =
12. 12.Best estimate of 21 × 71? (a) 14000 (b) 2800 (c) 1400 (d) 140
13. 13.₹44.80 − ₹22.90 =
14. 14.5 + 5 + 1 + 1 + 2 =
15. 15.1% of 110 =
16. 16.28 × 15 =
17. 17.Check with nines: 524 + 123 = 647. Correct or wrong? (a) correct (b) wrong
18. 18.26 + 64 + 86 + 15 =
19. 19.36 × 15 =
20. 20.Check with nines: 142 + 889 = 1039. Correct or wrong? (a) correct (b) wrong
21. 21.59 + 19 + 81 + 40 =
22. 22.48 × 15 =
23. 23.900 ÷ 25 =
24. 24.Check with nines: 87 × 38 = 3306. Correct or wrong? (a) wrong (b) correct
25. 25.6 + 1 + 4 + 4 =
26. 26.Best estimate of 297 × 6? (a) 18000 (b) 1800 (c) 180 (d) 3600
27. 27.Best estimate of 71 × 81? (a) 560 (b) 5600 (c) 56000 (d) 11200
28. 28.15 × 15 =
29. 29.15 × 13 =
30. 30.62 × 8 =
31. 31.51 × 15 =
32. 32.₹87.55 + ₹25.35 =
33. 33.588 − 36 =
34. 34.Check with nines: 474 + 761 = 1235. Correct or wrong? (a) correct (b) wrong
35. 35.114 + 29 =
36. 36.15 × 19 =
37. 37.32 × 15 =
38. 38.2 + 6 + 8 + 7 =
39. 39.4 + 9 + 8 + 6 =
40. 40.4 + 6 + 3 + 2 + 9 =

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