Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 949 · 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. 1.78 × 5 =
2. 2.20% of 40 =
3. 3.98 × 50 =
4. 4.174 + 87 =
5. 5.81² =
6. 6.4 + 8 + 6 + 7 =
7. 7.15 × 17 =
8. 8.₹36.20 + ₹44.85 =
9. 9.Best estimate of 42 × 49? (a) 20000 (b) 2000 (c) 200 (d) 4000
10. 10.385 + 49 =
11. 11.13 × 19 =
12. 12.12 × 15 =
13. 13.Check with nines: 64 × 23 = 1466. Correct or wrong? (a) wrong (b) correct
14. 14.13 × 17 =
15. 15.56 + 63 + 44 + 88 =
16. 16.1% of 200 =
17. 17.18 × 15 =
18. 18.31 × 50 =
19. 19.36 × 8 =
20. 20.106 − 68 =
21. 21.2 + 7 + 6 + 4 =
22. 22.54 × 4 =
23. 23.Check with nines: 83 × 45 = 3735. Correct or wrong? (a) wrong (b) correct
24. 24.225 − 59 =
25. 25.Check with nines: 81 × 25 = 2021. Correct or wrong? (a) correct (b) wrong
26. 26.16 + 24 + 66 + 14 =
27. 27.16 × 5 =
28. 28.303 + 37 =
29. 29.₹34.65 − ₹30.90 =
30. 30.1 + 9 + 1 + 4 =
31. 31.84 × 4 =
32. 32.93 × 50 =
33. 33.11 × 15 =
34. 34.46 × 15 =
35. 35.339 + 47 =
36. 36.19 + 30 + 60 + 81 =
37. 37.Check with nines: 87 × 24 = 2093. Correct or wrong? (a) wrong (b) correct
38. 38.13 × 16 =
39. 39.7 + 8 + 2 + 8 + 3 =
40. 40.84 × 5 =

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