Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 350 · 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. 1.387 − 38 =
2. 2.30 × 5 =
3. 3.₹32.90 − ₹15.05 =
4. 4.5 + 2 + 5 + 7 + 8 =
5. 5.850 ÷ 50 =
6. 6.89 + 20 + 74 + 59 =
7. 7.1750 ÷ 50 =
8. 8.9 + 7 + 3 + 2 =
9. 9.8 + 2 + 1 + 9 =
10. 10.Best estimate of 18 × 28? (a) 60 (b) 1200 (c) 600 (d) 6000
11. 11.Check with nines: 65 × 56 = 3640. Correct or wrong? (a) wrong (b) correct
12. 12.64 + 21 + 11 + 15 =
13. 13.69² =
14. 14.61² =
15. 15.83 − 59 =
16. 16.13 × 12 =
17. 17.104 × 4 =
18. 18.175 ÷ 25 =
19. 19.Check with nines: 39 × 38 = 1482. Correct or wrong? (a) wrong (b) correct
20. 20.18 × 13 =
21. 21.30 × 15 =
22. 22.103 + 29 =
23. 23.50% of 130 =
24. 24.64 × 4 =
25. 25.6 + 4 + 3 + 3 =
26. 26.₹29.50 − ₹24.90 =
27. 27.509 − 86 =
28. 28.35 × 8 =
29. 29.Check with nines: 914 + 180 = 1099. Correct or wrong? (a) correct (b) wrong
30. 30.49 × 15 =
31. 31.12 × 19 =
32. 32.71 + 55 + 76 + 50 =
33. 33.Check with nines: 212 + 153 = 365. Correct or wrong? (a) correct (b) wrong
34. 34.71 × 50 =
35. 35.8 + 1 + 3 + 7 + 8 =
36. 36.72 + 20 + 51 + 56 =
37. 37.19 × 15 =
38. 38.39² =
39. 39.Check with nines: 618 + 894 = 1517. Correct or wrong? (a) wrong (b) correct
40. 40.61 − 19 =

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