Deck 3: Decimals, Calculations and Percentages

Question 1

Convert 0.048 to a proper fraction.

Answer 1

Question 2

Convert 6.4375 to a mixed number.

Answer 2

Question 3

Answer 3

Question 4

Express 0.0784 correct to 2 decimal places.

Question 5

Express 0.0572953, correct to 4 significant figures.

Question 6

Question 7

Determine 2.37  1.2

Question 8

Evaluate 250.46  1.1, correct to 1 decimal place.

Question 9

Evaluate 12

Question 10

Question 11

Question 12

Question 13

The potential difference, V volts, available at battery terminals is given by: V = E - Ir.
Evaluate V when E = 7.23, I = 1.37 and r = 3.60

Question 14

Question 15

Question 16

Question 17

Question 18

Question 19

Question 20

Question 21

If 1.6 km = 1 mile, determine the speed of 45 miles/hour in kilometres per hour.

Question 22

Question 23

Question 24

Express 56.25% as a fraction in its simplest form.

Question 25

12.5% of a length of wood is 70 cm. What is the full length?

Question 26

A metal rod, 1.20 m long, is heated and its length expands by 42 mm. Calculate the
percentage increase in length.

Question 27

A man buys a house and makes a 20% profit when he sells it three years later for
£312 000. What did he pay for it originally?