Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 4 · 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. 1.63 + 12 + 34 + 32 =
2. 2.2 + 5 + 8 + 8 + 3 =
3. 3.Check with nines: 45 × 29 = 1305. Correct or wrong? (a) correct (b) wrong
4. 4.491 + 57 =
5. 5.15% of 760 =
6. 6.513 − 56 =
7. 7.₹79.40 + ₹37.05 =
8. 8.42 × 5 =
9. 9.Check with nines: 43 × 68 = 2924. Correct or wrong? (a) correct (b) wrong
10. 10.16 × 16 =
11. 11.Check with nines: 51 × 23 = 1168. Correct or wrong? (a) correct (b) wrong
12. 12.139 × 4 =
13. 13.14 × 15 =
14. 14.30 × 15 =
15. 15.76 + 38 + 12 + 60 =
16. 16.Check with nines: 18 × 60 = 1080. Correct or wrong? (a) correct (b) wrong
17. 17.Check with nines: 220 + 777 = 997. Correct or wrong? (a) wrong (b) correct
18. 18.22 × 8 =
19. 19.7 + 3 + 3 + 1 =
20. 20.63 − 59 =
21. 21.₹49.20 + ₹20.95 =
22. 22.₹95.45 + ₹42.10 =
23. 23.50% of 490 =
24. 24.79² =
25. 25.Best estimate of 68 × 28? (a) 210 (b) 21000 (c) 4200 (d) 2100
26. 26.504 − 46 =
27. 27.40 × 8 =
28. 28.204 + 87 =
29. 29.22 × 15 =
30. 30.15 × 50 =
31. 31.1 + 3 + 8 + 1 + 2 =
32. 32.1 + 5 + 6 + 4 + 5 =
33. 33.38 × 15 =
34. 34.16 × 4 =
35. 35.31 × 5 =
36. 36.Check with nines: 65 × 30 = 1950. Correct or wrong? (a) wrong (b) correct
37. 37.5% of 480 =
38. 38.7 + 2 + 3 + 7 =
39. 39.10% of 70 =
40. 40.20 × 8 =

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