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Mental Maths

 CSEC Maths: Mental Arithmetic


1. A book costs $1.70. Jane saves 50 cents each week. How many weeks will it be before she can buy it?  

2. A box holds 22 apples. How many apples are there in 20 boxes? 

3. What percentage is equivalent to 0.07? 

4. The temperature outside is minus three degrees Celsius. What will be the temperature after it rises seven degrees?  

5. A coach trip starts at 9:50. It lasts for thirty‐five minutes. At what time does it finish?

6. Find the value of 7 cubed. 

7. 8000 x 8 = _____

8. 1/3 of 60 = ______

9.

10. 2% as a decimal= ______

11. The square root of the sum of 8² and 17 is _____

12. 30 % of 80=

13. Miss Browne budgets $450 for her grandson’s lunches for the year. How many $5 lunches can he buy?

14. What is the volume of a cube that has side lengths of 3 cm?

15. One dog can run 32 km/h. Jerry wants his dogsled to go 96 km/h. How many dogs does he need?

16. A square has an area of 36 square units. What is the perimeter?


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