Mental Maths Questions Worksheet for Class 5

Mental maths lesson 19: Mixed mental challenge · Set 66 · 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. 1.5 + ? = 10
2. 2.Half of 122 =
3. 3.45 × 6 =
4. 4.512 − 487 =
5. 5.84 − 29 =
6. 6.45 + 9 =
7. 7.14 + 15 =
8. 8.8 + 9 =
9. 9.Double 94 =
10. 10.89 + 36 =
11. 11.136 ÷ 8 =
12. 12.89 × 5 =
13. 13.26 × 7 =
14. 14.88 ÷ 4 =
15. 15.25 + 27 =
16. 16.You buy a kite for ₹45 and a pen for ₹24. You pay with a ₹100 note. How much change do you get, in rupees?
17. 17.531 ÷ 9 =
18. 18.15 + 16 =
19. 19.13 × 8 =
20. 20.50 + 21 =
21. 21.96 × 4 =
22. 22.50% of ₹200 =
23. 23.79 − 33 =
24. 24.Best estimate of 16 × 39? (a) 800 (b) 80 (c) 8000
25. 25.You buy a bag of mangoes for ₹13 and a pen for ₹36. You pay with a ₹100 note. How much change do you get, in rupees?
26. 26.233 − 99 =
27. 27.35 × 3 =
28. 28.104 ÷ 8 =
29. 29.Double 45 =
30. 30.416 − 99 =
31. 31.22 + 24 =
32. 32.You buy a cricket ball for ₹373 and pay with a ₹500 note. How much change do you get, in rupees?
33. 33.5% of ₹70 =
34. 34.72 ÷ 6 =
35. 35.29 + 31 =
36. 36.34 laddoos are packed in boxes of 6. How many laddoos are left over?
37. 37.315 ÷ 9 =
38. 38.49 × 4 =
39. 39.What is the remainder when 34 is divided by 5?
40. 40.You buy a box of crayons for ₹73 and pay with a ₹100 note. How much change do you get, in rupees?

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