Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 985 · 40 questions

How to do it in your head (Look first): A 9, 19 or 99 → round and adjust. Two close numbers → count up (or near doubles when adding). × or ÷ by 4 or 8 → double or halve; other sums → split into tens and ones.

1. 1.57 − 13 =
2. 2.10% of ₹640 =
3. 3.You buy a storybook for ₹29 and a pen for ₹24. You pay with a ₹100 note. How much change do you get, in rupees?
4. 4.5 + ? = 10
5. 5.8 + ? = 10
6. 6.128 − 80 =
7. 7.77 × 4 =
8. 8.You buy a box of crayons for ₹16 and a pen for ₹18. You pay with a ₹100 note. How much change do you get, in rupees?
9. 9.848 − 99 =
10. 10.73 + 29 =
11. 11.211 − 180 =
12. 12.94 × 9 =
13. 13.19² =
14. 14.217 − 193 =
15. 15.50 − 29 =
16. 16.11² =
17. 17.2 + ? = 10
18. 18.What is the remainder when 27 is divided by 6?
19. 19.70 − 27 =
20. 20.Best estimate of 271 + 147? (a) 400 (b) 200 (c) 600
21. 21.Half of 32 =
22. 22.85 − 72 =
23. 23.50% of ₹310 =
24. 24.23² =
25. 25.79 + 6 =
26. 26.192 ÷ 4 =
27. 27.108 − 67 =
28. 28.43 + ? = 100
29. 29.Half of 76 =
30. 30.5% of ₹520 =
31. 31.96 ÷ 8 =
32. 32.13 + 12 =
33. 33.8 + 10 =
34. 34.25% of ₹390 =
35. 35.21 + 23 =
36. 36.47 children stand in rows of 3. How many full rows can they make?
37. 37.38 children stand in rows of 3. How many full rows can they make?
38. 38.7 + 6 =
39. 39.24² =
40. 40.11 + 12 =

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