Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 648 · 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. 1.26 + 57 =
2. 2.Check with nines: 503 + 551 = 1054. Correct or wrong? (a) wrong (b) correct
3. 3.17 + 48 + 67 + 40 =
4. 4.14 × 4 =
5. 5.1 + 4 + 6 + 5 =
6. 6.₹45.20 − ₹5.50 =
7. 7.78 × 5 =
8. 8.35 × 15 =
9. 9.91² =
10. 10.Check with nines: 68 × 97 = 6596. Correct or wrong? (a) correct (b) wrong
11. 11.Check with nines: 469 + 307 = 776. Correct or wrong? (a) correct (b) wrong
12. 12.2 + 8 + 6 + 7 =
13. 13.Best estimate of 298 × 4? (a) 12000 (b) 2400 (c) 120 (d) 1200
14. 14.45 × 15 =
15. 15.20% of 100 =
16. 16.₹74.30 + ₹46.10 =
17. 17.₹15.95 + ₹20.15 =
18. 18.₹62.55 + ₹38.80 =
19. 19.16 × 8 =
20. 20.89² =
21. 21.24 × 50 =
22. 22.₹21.15 + ₹42.45 =
23. 23.3 + 4 + 7 + 1 =
24. 24.26 + 62 + 32 + 43 =
25. 25.3 + 5 + 1 + 5 =
26. 26.19 × 15 =
27. 27.Check with nines: 954 + 962 = 1919. Correct or wrong? (a) correct (b) wrong
28. 28.50% of 850 =
29. 29.975 ÷ 25 =
30. 30.4 + 5 + 9 + 1 =
31. 31.311 + 78 =
32. 32.19 × 15 =
33. 33.Best estimate of 79 × 89? (a) 72000 (b) 14400 (c) 7200 (d) 720
34. 34.₹40.90 − ₹28.15 =
35. 35.57 × 15 =
36. 36.65 + 22 + 24 + 83 =
37. 37.36 × 15 =
38. 38.114 × 4 =
39. 39.Check with nines: 307 + 944 = 1251. Correct or wrong? (a) correct (b) wrong
40. 40.59 × 50 =

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