Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 332 · 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. 1.161 − 57 =
2. 2.950 ÷ 50 =
3. 3.97 − 56 =
4. 4.156 × 4 =
5. 5.20 + 45 + 30 + 72 =
6. 6.11 + 15 + 77 + 43 =
7. 7.31 × 5 =
8. 8.18 × 13 =
9. 9.39 × 15 =
10. 10.427 − 77 =
11. 11.55 × 15 =
12. 12.2 + 5 + 1 + 8 + 3 =
13. 13.15 × 15 =
14. 14.Check with nines: 372 + 414 = 786. Correct or wrong? (a) correct (b) wrong
15. 15.₹43.45 + ₹49.05 =
16. 16.8 + 2 + 7 + 8 + 2 =
17. 17.22 + 57 + 29 + 70 =
18. 18.41² =
19. 19.66 × 50 =
20. 20.Check with nines: 968 + 740 = 1708. Correct or wrong? (a) wrong (b) correct
21. 21.20% of 800 =
22. 22.2 + 1 + 8 + 8 =
23. 23.30 × 15 =
24. 24.395 − 89 =
25. 25.340 − 19 =
26. 26.64 + 12 + 25 + 42 =
27. 27.57 × 4 =
28. 28.24 × 50 =
29. 29.Best estimate of 18 × 52? (a) 100 (b) 2000 (c) 1000 (d) 10000
30. 30.13 × 4 =
31. 31.62 + 51 + 19 + 14 =
32. 32.Check with nines: 48 × 57 = 2732. Correct or wrong? (a) correct (b) wrong
33. 33.Best estimate of 21 × 89? (a) 180 (b) 18000 (c) 3600 (d) 1800
34. 34.81² =
35. 35.17 × 14 =
36. 36.45 + 52 + 66 + 35 =
37. 37.49 × 15 =
38. 38.105 + 57 =
39. 39.44 × 5 =
40. 40.700 ÷ 25 =

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