Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 236 · 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. 1.59² =
2. 2.Check with nines: 462 + 517 = 979. Correct or wrong? (a) wrong (b) correct
3. 3.50% of 610 =
4. 4.₹29.20 + ₹23.10 =
5. 5.9 + 6 + 6 + 4 =
6. 6.₹80.80 + ₹37.20 =
7. 7.38 × 5 =
8. 8.41² =
9. 9.16 × 5 =
10. 10.₹66.95 + ₹22.70 =
11. 11.20 × 50 =
12. 12.37 × 15 =
13. 13.Check with nines: 90 × 98 = 8818. Correct or wrong? (a) correct (b) wrong
14. 14.12 × 14 =
15. 15.131 + 49 =
16. 16.45 + 70 + 55 + 70 =
17. 17.82 + 58 + 30 + 35 =
18. 18.14 × 8 =
19. 19.Check with nines: 648 + 341 = 989. Correct or wrong? (a) correct (b) wrong
20. 20.₹28.45 + ₹30.50 =
21. 21.17 × 13 =
22. 22.89² =
23. 23.29² =
24. 24.16 × 13 =
25. 25.13 + 25 + 83 + 13 =
26. 26.Check with nines: 810 + 216 = 1018. Correct or wrong? (a) correct (b) wrong
27. 27.587 − 96 =
28. 28.9 + 6 + 5 + 5 =
29. 29.Best estimate of 41 × 88? (a) 360 (b) 36000 (c) 7200 (d) 3600
30. 30.5% of 860 =
31. 31.431 + 77 =
32. 32.₹68.30 − ₹45.45 =
33. 33.5% of 120 =
34. 34.16 × 14 =
35. 35.15% of 390 =
36. 36.150 − 36 =
37. 37.Check with nines: 91 × 53 = 4823. Correct or wrong? (a) correct (b) wrong
38. 38.89 × 5 =
39. 39.15 × 12 =
40. 40.9 + 8 + 1 + 3 + 1 =

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