Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 691 · 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.Check with nines: 84 × 64 = 5376. Correct or wrong? (a) correct (b) wrong
2. 2.8 + 3 + 5 + 5 =
3. 3.170 + 69 =
4. 4.152 × 4 =
5. 5.18 × 19 =
6. 6.9 + 5 + 2 + 2 + 8 =
7. 7.69² =
8. 8.179 + 59 =
9. 9.21² =
10. 10.1850 ÷ 50 =
11. 11.₹43.20 − ₹25.15 =
12. 12.₹7.05 + ₹41.45 =
13. 13.132 × 4 =
14. 14.₹41.40 + ₹16.80 =
15. 15.21² =
16. 16.43 × 15 =
17. 17.31² =
18. 18.900 ÷ 50 =
19. 19.Best estimate of 897 × 5? (a) 9000 (b) 4500 (c) 450 (d) 45000
20. 20.₹44.10 + ₹5.30 =
21. 21.12 × 13 =
22. 22.478 − 36 =
23. 23.20 × 15 =
24. 24.Best estimate of 39 × 72? (a) 280 (b) 5600 (c) 28000 (d) 2800
25. 25.Best estimate of 59 × 82? (a) 9600 (b) 480 (c) 4800 (d) 48000
26. 26.7 + 8 + 9 + 4 + 1 =
27. 27.19 × 17 =
28. 28.Check with nines: 64 × 15 = 965. Correct or wrong? (a) wrong (b) correct
29. 29.156 + 88 =
30. 30.102 − 78 =
31. 31.25% of 850 =
32. 32.Check with nines: 43 × 85 = 3660. Correct or wrong? (a) wrong (b) correct
33. 33.Best estimate of 58 × 59? (a) 7200 (b) 360 (c) 3600 (d) 36000
34. 34.₹15.05 + ₹30.65 =
35. 35.Best estimate of 79 × 52? (a) 8000 (b) 400 (c) 40000 (d) 4000
36. 36.600 ÷ 50 =
37. 37.473 + 87 =
38. 38.₹87.45 − ₹18.05 =
39. 39.16 × 15 =
40. 40.23 × 5 =

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