Speed Maths Test Worksheet

Speed calculation lesson 15: Mixed speed challenge · Set 58 · 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. 1.127 + 97 =
2. 2.9 + 1 + 3 + 9 =
3. 3.Best estimate of 31 × 79? (a) 24000 (b) 240 (c) 2400 (d) 4800
4. 4.11 × 12 =
5. 5.990 ÷ 5 =
6. 6.190 + 28 =
7. 7.18 × 13 =
8. 8.Check with nines: 915 + 472 = 1387. Correct or wrong? (a) correct (b) wrong
9. 9.520 − 36 =
10. 10.204 − 48 =
11. 11.150 ÷ 5 =
12. 12.16 × 11 =
13. 13.79² =
14. 14.7 × 15 =
15. 15.252 + 89 =
16. 16.55 × 4 =
17. 17.₹71.60 + ₹34.80 =
18. 18.9 + 8 + 1 + 5 =
19. 19.54 × 4 =
20. 20.26 × 15 =
21. 21.48 × 4 =
22. 22.₹45.20 − ₹18.30 =
23. 23.275 + 29 =
24. 24.134 − 38 =
25. 25.50% of 400 =
26. 26.7 × 15 =
27. 27.Best estimate of 59 × 72? (a) 420 (b) 42000 (c) 8400 (d) 4200
28. 28.336 − 19 =
29. 29.31² =
30. 30.3 + 4 + 6 + 2 + 8 =
31. 31.₹53.70 + ₹8.20 =
32. 32.Check with nines: 18 × 82 = 1476. Correct or wrong? (a) wrong (b) correct
33. 33.Check with nines: 292 + 497 = 787. Correct or wrong? (a) correct (b) wrong
34. 34.257 + 58 =
35. 35.1 + 1 + 4 + 9 =
36. 36.Best estimate of 98 × 7? (a) 70 (b) 700 (c) 1400 (d) 7000
37. 37.Check with nines: 207 + 963 = 1170. Correct or wrong? (a) correct (b) wrong
38. 38.50 × 50 =
39. 39.24 × 50 =
40. 40.10% of 650 =

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