Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 399 · 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. 1.1 + 6 + 7 + 9 + 1 =
2. 2.43 × 8 =
3. 3.69 + 30 + 31 + 80 =
4. 4.599 − 79 =
5. 5.44 × 15 =
6. 6.₹42.60 − ₹23.80 =
7. 7.18 × 15 =
8. 8.5% of 620 =
9. 9.12 × 19 =
10. 10.₹29.40 − ₹22.45 =
11. 11.18 × 17 =
12. 12.49 + 46 + 19 + 77 =
13. 13.402 + 29 =
14. 14.31² =
15. 15.117 + 89 =
16. 16.393 + 28 =
17. 17.157 − 77 =
18. 18.21² =
19. 19.4 + 1 + 1 + 9 + 3 =
20. 20.Best estimate of 897 × 5? (a) 45000 (b) 450 (c) 9000 (d) 4500
21. 21.476 + 38 =
22. 22.31 × 15 =
23. 23.1350 ÷ 50 =
24. 24.1400 ÷ 50 =
25. 25.37 × 8 =
26. 26.₹38.95 − ₹22.90 =
27. 27.₹73.40 + ₹37.55 =
28. 28.Check with nines: 405 + 359 = 770. Correct or wrong? (a) correct (b) wrong
29. 29.5% of 860 =
30. 30.Check with nines: 968 + 291 = 1259. Correct or wrong? (a) correct (b) wrong
31. 31.11 × 18 =
32. 32.48 × 15 =
33. 33.10% of 540 =
34. 34.79 × 5 =
35. 35.49 × 50 =
36. 36.590 ÷ 5 =
37. 37.₹95.45 − ₹10.40 =
38. 38.Best estimate of 203 × 3? (a) 1200 (b) 60 (c) 6000 (d) 600
39. 39.50% of 650 =
40. 40.77 × 5 =

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