Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 645 · 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. 1.1150 ÷ 50 =
2. 2.148 − 16 =
3. 3.25 + 20 + 27 + 55 =
4. 4.1050 ÷ 25 =
5. 5.71² =
6. 6.5% of 680 =
7. 7.577 − 16 =
8. 8.494 + 19 =
9. 9.24 × 15 =
10. 10.400 ÷ 25 =
11. 11.Check with nines: 83 × 46 = 3817. Correct or wrong? (a) correct (b) wrong
12. 12.51 + 14 + 70 + 49 =
13. 13.28 + 57 + 46 + 40 =
14. 14.59² =
15. 15.42 × 4 =
16. 16.42 × 15 =
17. 17.26 × 50 =
18. 18.49² =
19. 19.6 + 4 + 6 + 8 =
20. 20.35 × 4 =
21. 21.Best estimate of 803 × 4? (a) 32000 (b) 6400 (c) 320 (d) 3200
22. 22.68 + 88 =
23. 23.4 + 9 + 3 + 4 + 6 =
24. 24.Best estimate of 19 × 22? (a) 800 (b) 4000 (c) 40 (d) 400
25. 25.144 + 99 =
26. 26.4 + 7 + 3 + 6 =
27. 27.Best estimate of 197 × 3? (a) 60 (b) 1200 (c) 6000 (d) 600
28. 28.Check with nines: 32 × 88 = 2816. Correct or wrong? (a) correct (b) wrong
29. 29.81 × 5 =
30. 30.447 − 26 =
31. 31.337 − 89 =
32. 32.Check with nines: 22 × 87 = 1914. Correct or wrong? (a) wrong (b) correct
33. 33.1000 ÷ 50 =
34. 34.400 ÷ 50 =
35. 35.25% of 580 =
36. 36.19² =
37. 37.18 × 11 =
38. 38.89 + 89 =
39. 39.₹58.40 + ₹23.05 =
40. 40.2000 ÷ 50 =

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