Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 111 · 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. 1.54 × 15 =
2. 2.Check with nines: 885 + 452 = 1337. Correct or wrong? (a) wrong (b) correct
3. 3.12 × 18 =
4. 4.15% of 860 =
5. 5.17 × 15 =
6. 6.33 × 50 =
7. 7.8 + 5 + 3 + 3 + 7 =
8. 8.522 − 78 =
9. 9.₹57.35 + ₹47.35 =
10. 10.Check with nines: 65 × 58 = 3772. Correct or wrong? (a) wrong (b) correct
11. 11.Best estimate of 92 × 78? (a) 14400 (b) 72000 (c) 720 (d) 7200
12. 12.51² =
13. 13.46 × 5 =
14. 14.Best estimate of 72 × 52? (a) 350 (b) 35000 (c) 3500 (d) 7000
15. 15.25% of 700 =
16. 16.49² =
17. 17.110 ÷ 5 =
18. 18.Check with nines: 622 + 290 = 908. Correct or wrong? (a) correct (b) wrong
19. 19.750 ÷ 50 =
20. 20.118 × 4 =
21. 21.20% of 340 =
22. 22.Check with nines: 609 + 493 = 1103. Correct or wrong? (a) correct (b) wrong
23. 23.46 × 50 =
24. 24.49 + 75 + 79 + 23 =
25. 25.153 + 39 =
26. 26.1 + 7 + 8 + 3 + 7 =
27. 27.25% of 160 =
28. 28.89 + 34 + 17 + 46 =
29. 29.32 + 77 + 71 + 56 =
30. 30.14 × 18 =
31. 31.76 × 4 =
32. 32.13 × 16 =
33. 33.391 + 37 =
34. 34.522 − 56 =
35. 35.529 − 59 =
36. 36.85 × 50 =
37. 37.250 ÷ 25 =
38. 38.16 × 8 =
39. 39.246 − 79 =
40. 40.₹77.85 − ₹11.05 =

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