Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 395 · 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.Best estimate of 41 × 92? (a) 360 (b) 3600 (c) 7200 (d) 36000
2. 2.7 + 1 + 9 + 5 + 9 =
3. 3.562 − 48 =
4. 4.29 × 5 =
5. 5.2 + 7 + 2 + 9 + 8 =
6. 6.323 − 26 =
7. 7.153 − 76 =
8. 8.Check with nines: 569 + 323 = 894. Correct or wrong? (a) wrong (b) correct
9. 9.Check with nines: 382 + 141 = 523. Correct or wrong? (a) wrong (b) correct
10. 10.251 + 87 =
11. 11.13 × 12 =
12. 12.71² =
13. 13.18 × 13 =
14. 14.Check with nines: 881 + 427 = 1308. Correct or wrong? (a) correct (b) wrong
15. 15.14 × 15 =
16. 16.19² =
17. 17.4 + 5 + 6 + 6 + 5 =
18. 18.98 × 50 =
19. 19.5 × 15 =
20. 20.20 + 88 + 47 + 28 =
21. 21.498 + 67 =
22. 22.5 + 1 + 6 + 2 + 5 =
23. 23.Check with nines: 287 + 781 = 1069. Correct or wrong? (a) wrong (b) correct
24. 24.70 × 8 =
25. 25.115 × 4 =
26. 26.44 × 50 =
27. 27.59² =
28. 28.93 × 5 =
29. 29.₹84.75 − ₹30.35 =
30. 30.52 + 89 =
31. 31.6 + 5 + 4 + 2 + 7 =
32. 32.6 + 1 + 7 + 2 + 3 =
33. 33.35 × 15 =
34. 34.19 × 15 =
35. 35.495 + 99 =
36. 36.78 × 4 =
37. 37.57 + 44 + 30 + 70 =
38. 38.16 × 14 =
39. 39.19² =
40. 40.539 − 67 =

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