Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 712 · 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.₹99.05 − ₹5.10 =
2. 2.106 + 27 =
3. 3.20 + 84 + 11 + 68 =
4. 4.16 × 8 =
5. 5.91² =
6. 6.17 × 15 =
7. 7.44 × 5 =
8. 8.Check with nines: 659 + 770 = 1428. Correct or wrong? (a) wrong (b) correct
9. 9.13 × 8 =
10. 10.20 + 81 + 22 + 61 =
11. 11.2 + 1 + 4 + 3 + 9 =
12. 12.Check with nines: 93 × 21 = 1951. Correct or wrong? (a) wrong (b) correct
13. 13.Check with nines: 38 × 85 = 3233. Correct or wrong? (a) wrong (b) correct
14. 14.Check with nines: 262 + 393 = 652. Correct or wrong? (a) correct (b) wrong
15. 15.13 + 50 + 39 + 44 =
16. 16.19 + 11 + 42 + 13 =
17. 17.59 × 4 =
18. 18.1% of 750 =
19. 19.477 − 77 =
20. 20.115 − 67 =
21. 21.369 + 98 =
22. 22.Best estimate of 197 × 8? (a) 16000 (b) 160 (c) 3200 (d) 1600
23. 23.15 × 11 =
24. 24.71 × 5 =
25. 25.44 × 5 =
26. 26.71² =
27. 27.50% of 270 =
28. 28.₹12.35 + ₹32.15 =
29. 29.1 + 8 + 5 + 4 + 9 =
30. 30.23 + 62 + 33 + 14 =
31. 31.6 + 8 + 5 + 2 + 5 =
32. 32.50 + 35 + 20 + 62 =
33. 33.430 − 89 =
34. 34.21 + 36 + 41 + 57 =
35. 35.23 × 50 =
36. 36.39² =
37. 37.71² =
38. 38.5 + 5 + 3 + 9 + 7 =
39. 39.Check with nines: 15 × 40 = 600. Correct or wrong? (a) wrong (b) correct
40. 40.96 − 49 =

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