Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 591 · 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. 1.4 × 15 =
2. 2.388 − 97 =
3. 3.1750 ÷ 50 =
4. 4.₹92.80 − ₹45.25 =
5. 5.28 + 18 + 15 + 23 =
6. 6.90 × 50 =
7. 7.332 + 48 =
8. 8.5% of 40 =
9. 9.74 + 25 + 89 + 73 =
10. 10.47 × 8 =
11. 11.2 + 4 + 8 + 1 =
12. 12.26 × 4 =
13. 13.₹72.15 − ₹27.50 =
14. 14.14 × 16 =
15. 15.578 − 98 =
16. 16.47 + 15 + 61 + 62 =
17. 17.Check with nines: 87 × 73 = 6349. Correct or wrong? (a) correct (b) wrong
18. 18.485 ÷ 5 =
19. 19.22 + 12 + 50 + 30 =
20. 20.12 + 12 + 69 + 11 =
21. 21.5% of 560 =
22. 22.67 + 23 + 13 + 66 =
23. 23.28 × 15 =
24. 24.Best estimate of 41 × 48? (a) 200 (b) 2000 (c) 20000 (d) 4000
25. 25.Best estimate of 72 × 88? (a) 63000 (b) 630 (c) 12600 (d) 6300
26. 26.58 + 11 + 34 + 14 =
27. 27.479 − 28 =
28. 28.Check with nines: 70 × 18 = 1260. Correct or wrong? (a) wrong (b) correct
29. 29.Best estimate of 701 × 4? (a) 28000 (b) 2800 (c) 5600 (d) 280
30. 30.16 × 16 =
31. 31.125 × 4 =
32. 32.1950 ÷ 50 =
33. 33.17 × 19 =
34. 34.9 + 9 + 1 + 4 + 8 =
35. 35.5% of 730 =
36. 36.201 + 67 =
37. 37.4 + 6 + 7 + 3 =
38. 38.127 × 4 =
39. 39.25% of 340 =
40. 40.1% of 490 =

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