Chapter 1 to 3

Work out the following:

a) -5 x 20

b) 36 ÷ -6

Simplify the following ratios.

a) 300 ml : 5L

b) 50 cm : 6 m

Solve the following:

a) 15 x 0.1

b) 32 ÷ 0.01

Work out the following:

a) √225

b) ∛512

c) 9²

d) 6³

Find the prime factors of the following:

a) 50

b) 80

Multiply and divide the following.

a) 3.2 x 2.1

b) 8.24 ÷ 0.4

Max earned 250 riyals in the beginning of July. At the end of the month his earning increased by 15%.

a) How much did he earn at the end of the month.

b) What is the percentage decrease of his earnings if he earned 260 riyals at the end of August?