Number Practice 14/3

Percentages

100

What is 2/5 as a percentage?

40%

200

what is 9% as a decimal?

0.09

300

What is 24% of 350

84

400

An $80 dress is discounted to $72. What is the percentage discount?

10%

500

Peter sells a £100 model to Paul for a profit of 20%. Paul sells the model to Mary at a loss of 20% to him. What did Mary pay for the model?

£96

Division

100

What is 24 divided 12?

2

200

What is 177 divided by 3

59

300

What is 154 divided by 7?

22

400

What is 1368 divided by 9?

152

500

What is 2112 divided by 8?

264

Length

100

What is the perimeter of a circle called?

circumference

200

How many metres in 6 1/2 kilometres?

6500m

300

The radius of a circle is 6cm. What is the diameter?

12cm

400

The area of a Square is 49cm², what is the length of one of it's sides?

7cm

500

The area of a rectangle is 27cm², what are the possible lengths of the longer side?

27cm and 9cm 

Area

100

The formula A= L x L is used to find the area of what shape?

Square

200

How many square mm in a square cm?

100

300

What is the formula for the area of a triangle?

a = 1/2 x base x height

400

A block of land is 300m by 100m. What is its area in km? 

30km

500

What is the area of a triangle whose base is 11cm and height 10cm?

55cm²

Multiplication

100

What is 9 multiplied by 7?

63

200

What is 24 multiplied by 8?

192

300

What is 45 multiplied by 11?

495

400

What is 72 multiplied by 13?

936

500

What is 136 multiplied by 41?

5576