Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 502 · 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.Best estimate of 601 × 8? (a) 9600 (b) 4800 (c) 480 (d) 48000
2. 2.59 × 50 =
3. 3.161 − 98 =
4. 4.4 + 2 + 3 + 8 =
5. 5.72 × 5 =
6. 6.₹21.50 + ₹30.65 =
7. 7.51 × 15 =
8. 8.Check with nines: 83 × 17 = 1409. Correct or wrong? (a) wrong (b) correct
9. 9.297 + 88 =
10. 10.475 ÷ 25 =
11. 11.76 + 82 + 34 + 89 =
12. 12.9 + 9 + 2 + 1 =
13. 13.6 + 1 + 5 + 4 =
14. 14.8 + 6 + 4 + 6 =
15. 15.25 + 64 + 26 + 20 =
16. 16.89 + 89 + 67 + 17 =
17. 17.237 − 56 =
18. 18.1075 ÷ 25 =
19. 19.Best estimate of 58 × 78? (a) 48000 (b) 4800 (c) 9600 (d) 480
20. 20.35 + 84 + 12 + 48 =
21. 21.81² =
22. 22.48 × 50 =
23. 23.520 ÷ 5 =
24. 24.₹23.75 − ₹6.85 =
25. 25.31² =
26. 26.20% of 390 =
27. 27.24 × 50 =
28. 28.11 × 17 =
29. 29.50% of 50 =
30. 30.160 × 4 =
31. 31.950 ÷ 25 =
32. 32.92 × 4 =
33. 33.1% of 220 =
34. 34.155 − 99 =
35. 35.1 + 3 + 1 + 9 + 9 =
36. 36.Check with nines: 18 × 68 = 1228. Correct or wrong? (a) wrong (b) correct
37. 37.Best estimate of 799 × 7? (a) 11200 (b) 5600 (c) 56000 (d) 560
38. 38.2 + 2 + 8 + 4 =
39. 39.₹83.85 − ₹13.80 =
40. 40.61 × 4 =

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