Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 160 · 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.Double 91 =
2. 2.14 × 4 =
3. 3.You buy a box of crayons for ₹82 and pay with a ₹100 note. How much change do you get, in rupees?
4. 4.57 ÷ 3 =
5. 5.24 × 8 =
6. 6.23 + 75 =
7. 7.213 ÷ 3 =
8. 8.77 − 22 =
9. 9.71 − 31 =
10. 10.264 ÷ 8 =
11. 11.1 + ? = 10
12. 12.56 + 6 =
13. 13.43 + 9 =
14. 14.37 + 5 =
15. 15.93 − 31 =
16. 16.You buy a kite for ₹261 and pay with a ₹500 note. How much change do you get, in rupees?
17. 17.62 laddoos are packed in boxes of 4. How many laddoos are left over?
18. 18.Best estimate of 86 × 81? (a) 720 (b) 72000 (c) 7200
19. 19.Double 57 =
20. 20.25% of ₹140 =
21. 21.36 − 19 =
22. 22.256 − 99 =
23. 23.76 children stand in rows of 8. How many full rows can they make?
24. 24.50% of ₹620 =
25. 25.71 − 16 =
26. 26.28 children stand in rows of 3. How many full rows can they make?
27. 27.310 − 287 =
28. 28.24² =
29. 29.72 × 3 =
30. 30.You buy a bag of mangoes for ₹443 and pay with a ₹500 note. How much change do you get, in rupees?
31. 31.33 + ? = 100
32. 32.221 − 192 =
33. 33.44 + 9 =
34. 34.73 − 9 =
35. 35.10% of ₹780 =
36. 36.Best estimate of 20 × 36? (a) 80 (b) 8000 (c) 800
37. 37.16 × 8 =
38. 38.63 laddoos are packed in boxes of 4. How many laddoos are left over?
39. 39.What is the remainder when 22 is divided by 4?
40. 40.65 + 31 =

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