Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 91 · 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. 1.42 × 5 =
2. 2.1350 ÷ 25 =
3. 3.₹60.25 + ₹44.10 =
4. 4.45 + 25 + 51 + 30 =
5. 5.119 + 38 =
6. 6.417 − 67 =
7. 7.1750 ÷ 50 =
8. 8.75 + 32 + 42 + 24 =
9. 9.1% of 240 =
10. 10.441 − 56 =
11. 11.309 − 16 =
12. 12.Check with nines: 37 × 65 = 2410. Correct or wrong? (a) correct (b) wrong
13. 13.329 + 49 =
14. 14.68 × 5 =
15. 15.31 × 15 =
16. 16.443 + 48 =
17. 17.59 − 26 =
18. 18.118 + 28 =
19. 19.86 × 50 =
20. 20.Check with nines: 71 × 98 = 6964. Correct or wrong? (a) correct (b) wrong
21. 21.1250 ÷ 50 =
22. 22.Check with nines: 342 + 499 = 836. Correct or wrong? (a) wrong (b) correct
23. 23.11 × 16 =
24. 24.Check with nines: 879 + 606 = 1485. Correct or wrong? (a) correct (b) wrong
25. 25.25% of 780 =
26. 26.Check with nines: 15 × 16 = 240. Correct or wrong? (a) correct (b) wrong
27. 27.105 + 48 =
28. 28.20% of 90 =
29. 29.Best estimate of 97 × 8? (a) 8000 (b) 800 (c) 80 (d) 1600
30. 30.19 × 15 =
31. 31.57 − 56 =
32. 32.55 + 58 + 74 + 74 =
33. 33.148 × 4 =
34. 34.275 ÷ 25 =
35. 35.₹53.30 + ₹29.50 =
36. 36.5% of 440 =
37. 37.7 + 6 + 1 + 9 + 2 =
38. 38.209 − 36 =
39. 39.46 × 50 =
40. 40.78 + 23 + 26 + 29 =

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