Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 914 · 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. 1.16 × 15 =
2. 2.₹38.15 − ₹23.60 =
3. 3.65 × 4 =
4. 4.Best estimate of 301 × 9? (a) 270 (b) 2700 (c) 5400 (d) 27000
5. 5.Check with nines: 26 × 32 = 832. Correct or wrong? (a) correct (b) wrong
6. 6.46 + 88 + 77 + 30 =
7. 7.24 + 33 + 36 + 76 =
8. 8.12 × 11 =
9. 9.51 × 4 =
10. 10.20% of 380 =
11. 11.20% of 40 =
12. 12.316 − 86 =
13. 13.1% of 280 =
14. 14.Best estimate of 88 × 41? (a) 7200 (b) 360 (c) 3600 (d) 36000
15. 15.3 + 1 + 8 + 7 + 9 =
16. 16.48 × 15 =
17. 17.442 − 26 =
18. 18.7 + 5 + 2 + 5 =
19. 19.41² =
20. 20.335 − 59 =
21. 21.Check with nines: 124 + 381 = 505. Correct or wrong? (a) correct (b) wrong
22. 22.85 + 32 + 52 + 48 =
23. 23.25 × 15 =
24. 24.48 × 5 =
25. 25.6 + 2 + 8 + 9 =
26. 26.Best estimate of 99 × 4? (a) 400 (b) 40 (c) 800 (d) 4000
27. 27.17 × 19 =
28. 28.5 + 2 + 2 + 8 + 9 =
29. 29.1450 ÷ 50 =
30. 30.Check with nines: 281 + 653 = 934. Correct or wrong? (a) correct (b) wrong
31. 31.40 × 15 =
32. 32.399 + 98 =
33. 33.₹92.40 − ₹46.65 =
34. 34.Check with nines: 590 + 266 = 850. Correct or wrong? (a) correct (b) wrong
35. 35.9 + 4 + 9 + 6 =
36. 36.4 + 2 + 6 + 2 =
37. 37.24 × 8 =
38. 38.54 + 67 =
39. 39.8 + 5 + 2 + 3 =
40. 40.Best estimate of 81 × 38? (a) 320 (b) 32000 (c) 3200 (d) 6400

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