Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 431 · 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: 14 × 15 = 210. Correct or wrong? (a) wrong (b) correct
2. 2.11 × 11 =
3. 3.₹26.30 + ₹14.95 =
4. 4.435 + 78 =
5. 5.134 × 4 =
6. 6.3 + 6 + 7 + 1 + 3 =
7. 7.50% of 290 =
8. 8.12 × 15 =
9. 9.₹61.10 − ₹17.70 =
10. 10.₹39.95 − ₹14.10 =
11. 11.212 + 49 =
12. 12.5% of 250 =
13. 13.5% of 630 =
14. 14.59² =
15. 15.71² =
16. 16.5 + 3 + 5 + 3 + 5 =
17. 17.266 + 97 =
18. 18.376 + 59 =
19. 19.18 × 19 =
20. 20.90 × 5 =
21. 21.426 − 36 =
22. 22.63 × 4 =
23. 23.Check with nines: 150 + 580 = 730. Correct or wrong? (a) correct (b) wrong
24. 24.20% of 360 =
25. 25.15% of 690 =
26. 26.25% of 890 =
27. 27.55 × 15 =
28. 28.45 × 8 =
29. 29.1200 ÷ 25 =
30. 30.₹36.25 − ₹22.75 =
31. 31.24 + 44 + 42 + 17 =
32. 32.Best estimate of 199 × 6? (a) 12000 (b) 2400 (c) 1200 (d) 120
33. 33.Check with nines: 17 × 31 = 520. Correct or wrong? (a) correct (b) wrong
34. 34.Check with nines: 191 + 569 = 767. Correct or wrong? (a) correct (b) wrong
35. 35.38 × 15 =
36. 36.19² =
37. 37.50% of 560 =
38. 38.61² =
39. 39.385 + 37 =
40. 40.27 + 46 + 60 + 57 =

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