Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 667 · 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. 1.50 × 15 =
2. 2.70 + 99 =
3. 3.1% of 700 =
4. 4.36 × 15 =
5. 5.262 − 76 =
6. 6.71² =
7. 7.15 × 17 =
8. 8.61 + 84 + 41 + 52 =
9. 9.317 + 39 =
10. 10.70 × 50 =
11. 11.Best estimate of 797 × 8? (a) 6400 (b) 12800 (c) 64000 (d) 640
12. 12.235 + 58 =
13. 13.Best estimate of 79 × 88? (a) 720 (b) 14400 (c) 7200 (d) 72000
14. 14.15% of 150 =
15. 15.101 + 99 =
16. 16.Best estimate of 82 × 22? (a) 16000 (b) 1600 (c) 160 (d) 3200
17. 17.64 × 8 =
18. 18.12 × 5 =
19. 19.19 × 13 =
20. 20.67 × 50 =
21. 21.₹46.65 − ₹42.25 =
22. 22.3 + 3 + 1 + 7 =
23. 23.₹34.10 + ₹45.30 =
24. 24.Check with nines: 167 + 706 = 881. Correct or wrong? (a) wrong (b) correct
25. 25.725 ÷ 25 =
26. 26.11 + 84 + 63 + 36 =
27. 27.₹32.20 − ₹20.10 =
28. 28.71 × 5 =
29. 29.Check with nines: 845 + 143 = 988. Correct or wrong? (a) correct (b) wrong
30. 30.16 + 49 + 32 + 61 =
31. 31.490 ÷ 5 =
32. 32.91 × 50 =
33. 33.4 + 6 + 2 + 3 + 2 =
34. 34.60 + 30 + 55 + 20 =
35. 35.255 + 97 =
36. 36.Check with nines: 60 × 35 = 2105. Correct or wrong? (a) wrong (b) correct
37. 37.48 + 75 + 46 + 43 =
38. 38.7 + 9 + 3 + 1 + 9 =
39. 39.26 × 15 =
40. 40.38 + 15 + 11 + 35 =

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