Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 375 · 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.Check with nines: 16 × 19 = 304. Correct or wrong? (a) wrong (b) correct
2. 2.314 − 89 =
3. 3.67 + 56 + 12 + 50 =
4. 4.91² =
5. 5.13 × 8 =
6. 6.57 × 15 =
7. 7.50 + 47 =
8. 8.29 × 4 =
9. 9.69 × 8 =
10. 10.2 + 6 + 8 + 8 =
11. 11.23 × 50 =
12. 12.21 × 15 =
13. 13.Best estimate of 897 × 6? (a) 540 (b) 10800 (c) 5400 (d) 54000
14. 14.30 × 50 =
15. 15.₹83.65 + ₹13.55 =
16. 16.₹24.65 + ₹30.80 =
17. 17.69 × 8 =
18. 18.Check with nines: 79 × 91 = 7189. Correct or wrong? (a) wrong (b) correct
19. 19.8 + 7 + 4 + 3 + 1 =
20. 20.₹57.10 − ₹48.25 =
21. 21.174 − 88 =
22. 22.185 − 37 =
23. 23.₹14.20 + ₹27.10 =
24. 24.222 + 68 =
25. 25.₹18.35 − ₹4.50 =
26. 26.1 + 7 + 9 + 5 =
27. 27.32 × 15 =
28. 28.Check with nines: 87 × 71 = 6177. Correct or wrong? (a) correct (b) wrong
29. 29.24 × 5 =
30. 30.581 − 97 =
31. 31.₹35.05 − ₹8.90 =
32. 32.44 × 8 =
33. 33.41² =
34. 34.457 − 18 =
35. 35.10% of 240 =
36. 36.75 + 27 + 11 + 53 =
37. 37.5% of 650 =
38. 38.Check with nines: 429 + 712 = 1141. Correct or wrong? (a) wrong (b) correct
39. 39.86 − 69 =
40. 40.483 + 29 =

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