Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 109 · 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. 1.615 ÷ 5 =
2. 2.28 × 8 =
3. 3.53 + 88 =
4. 4.900 ÷ 50 =
5. 5.5 + 5 + 7 + 5 =
6. 6.255 − 87 =
7. 7.37 × 5 =
8. 8.167 + 18 =
9. 9.211 − 19 =
10. 10.107 × 4 =
11. 11.481 − 69 =
12. 12.49² =
13. 13.Check with nines: 82 × 29 = 2378. Correct or wrong? (a) correct (b) wrong
14. 14.Check with nines: 24 × 34 = 816. Correct or wrong? (a) correct (b) wrong
15. 15.415 − 88 =
16. 16.13 × 17 =
17. 17.Check with nines: 63 × 61 = 3843. Correct or wrong? (a) correct (b) wrong
18. 18.31 + 87 + 69 + 32 =
19. 19.6 × 15 =
20. 20.Best estimate of 803 × 8? (a) 64000 (b) 640 (c) 12800 (d) 6400
21. 21.147 − 28 =
22. 22.19 × 13 =
23. 23.₹66.75 − ₹2.05 =
24. 24.79² =
25. 25.2000 ÷ 50 =
26. 26.₹48.90 − ₹4.60 =
27. 27.14 × 8 =
28. 28.2 + 4 + 2 + 6 =
29. 29.7 × 15 =
30. 30.6 + 9 + 9 + 3 + 1 =
31. 31.64 − 19 =
32. 32.11 × 12 =
33. 33.₹92.30 − ₹44.35 =
34. 34.19 × 8 =
35. 35.Check with nines: 18 × 58 = 1038. Correct or wrong? (a) correct (b) wrong
36. 36.12 × 19 =
37. 37.75 × 5 =
38. 38.19 × 15 =
39. 39.5 + 5 + 5 + 2 =
40. 40.₹79.50 + ₹44.55 =

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