Core Mathematics quick practice

Question 1 of 10

Express 7/8 as a percentage.

Question 2 of 10

Solve x² − 13x + 40 = 0.

Question 3 of 10

A boy walks 16 km due north and then 12 km due east. How far is he from his starting point?

Question 4 of 10

A machine costing GH₵ 4,000 depreciates by 12% each year. Find its value after 3 years.

Question 5 of 10

VAT is added to the price of goods and services.

Question 6 of 10

Convert 139 (base ten) to base 6.

Question 7 of 10

Find cos 120°.

Question 8 of 10

Simple interest on GH₵ 500 for 3 years is GH₵ 300. Find the rate.

Question 9 of 10

Find the minimum value of y = x² + 8x + 15.

Question 10 of 10

The first term of an AP is 4 and the 10th term is 31. Find the sum of the first 10 terms.