Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 396 · 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. 1.6 + 8 + 4 + 2 =
2. 2.₹73.90 + ₹36.15 =
3. 3.₹13.55 + ₹24.20 =
4. 4.₹32.85 − ₹10.40 =
5. 5.11 × 15 =
6. 6.50% of 800 =
7. 7.198 − 47 =
8. 8.Check with nines: 25 × 98 = 2444. Correct or wrong? (a) correct (b) wrong
9. 9.₹43.40 − ₹6.45 =
10. 10.1 + 9 + 7 + 5 =
11. 11.12 × 15 =
12. 12.50% of 30 =
13. 13.21 + 86 + 84 + 74 =
14. 14.9 × 15 =
15. 15.365 ÷ 5 =
16. 16.131 × 4 =
17. 17.8 + 7 + 4 + 2 + 2 =
18. 18.13 × 13 =
19. 19.69² =
20. 20.15% of 100 =
21. 21.17 + 77 + 52 + 30 =
22. 22.169 − 68 =
23. 23.81² =
24. 24.50% of 800 =
25. 25.21 × 4 =
26. 26.398 + 17 =
27. 27.35 × 15 =
28. 28.386 + 27 =
29. 29.7 + 4 + 3 + 3 =
30. 30.Check with nines: 735 + 349 = 1087. Correct or wrong? (a) wrong (b) correct
31. 31.396 + 18 =
32. 32.Check with nines: 49 × 25 = 1225. Correct or wrong? (a) correct (b) wrong
33. 33.71 + 38 + 41 + 58 =
34. 34.71² =
35. 35.Best estimate of 399 × 5? (a) 200 (b) 4000 (c) 2000 (d) 20000
36. 36.75 + 57 + 58 + 73 =
37. 37.80 − 76 =
38. 38.409 + 99 =
39. 39.Best estimate of 603 × 3? (a) 18000 (b) 180 (c) 3600 (d) 1800
40. 40.145 × 4 =

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