Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 221 · 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. 1.27 + 35 + 71 + 41 =
2. 2.63 × 15 =
3. 3.17 × 13 =
4. 4.Best estimate of 803 × 6? (a) 9600 (b) 480 (c) 4800 (d) 48000
5. 5.19 × 19 =
6. 6.69² =
7. 7.Check with nines: 28 × 42 = 1173. Correct or wrong? (a) wrong (b) correct
8. 8.15% of 420 =
9. 9.71² =
10. 10.26 × 15 =
11. 11.50% of 150 =
12. 12.Check with nines: 781 + 494 = 1271. Correct or wrong? (a) correct (b) wrong
13. 13.160 − 77 =
14. 14.29² =
15. 15.30 × 50 =
16. 16.41² =
17. 17.8 × 15 =
18. 18.14 × 18 =
19. 19.500 ÷ 25 =
20. 20.181 − 88 =
21. 21.Best estimate of 598 × 3? (a) 18000 (b) 180 (c) 3600 (d) 1800
22. 22.275 ÷ 5 =
23. 23.12 × 15 =
24. 24.Best estimate of 81 × 91? (a) 72000 (b) 14400 (c) 720 (d) 7200
25. 25.25% of 710 =
26. 26.₹14.65 − ₹8.80 =
27. 27.91 × 5 =
28. 28.12 × 17 =
29. 29.Check with nines: 78 × 72 = 5609. Correct or wrong? (a) correct (b) wrong
30. 30.20 × 8 =
31. 31.Check with nines: 80 × 57 = 4556. Correct or wrong? (a) correct (b) wrong
32. 32.4 + 9 + 1 + 8 + 3 =
33. 33.47 × 5 =
34. 34.37 × 15 =
35. 35.4 + 1 + 5 + 9 + 1 =
36. 36.427 + 78 =
37. 37.20% of 860 =
38. 38.200 ÷ 50 =
39. 39.300 ÷ 25 =
40. 40.15% of 180 =

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