Karen Morrison and Nick Hamshaw Solutions for Exercise 18: Examination practice

Add brackets to this statement to make it true:

$7+14÷4-1\times 2=14$

Insert one pair of brackets only to make the following statement correct.

$6+5\times 10-8=16$

Calculate

$\frac{8.24+2.56}{1.26-0.72}$

Write $3.5897$ correct to $4$ significant figures.

$8, 9, 10, 11, 12, 13, 14, 15, 16$

From the above list of numbers, write down the square numbers.

$8, 9, 10, 11, 12, 13, 14, 15, 16$

From the above list of numbers, write down a prime factor of $99$.

Write $90$ as a product of prime factors.

Find the lowest common multiple of $90$ and $105$.