Percent / fraction / decimal
Write 10% as a fraction
1/10
John spent 1/5 of his pocket money (€10). How much did he have left?
€8
A computer is bought for €250. It is then sold on for €200. What is the percentage loss for this item?
20%
Write the set of prime numbers less than 15
{ 2, 3, 5, 7, 11, 13}
What is 38% as a decimal
0.38
Sarah gets €25 per month pocket money. She spends 2/5 of her pocket money on sweets and 3/10 of her pocket money on stationary. How much does she spend in total.
€17.50
Write the set of elements that are common multiples of 3 and 4, less than 30.
In other words, the set of numbers that both 3 and 4 divide into which are also less than 30.
{ 12, 24}
What is 9/10 of 300
270
Ciara likes to go swimming, and with her family discount, it costs her €3.50 per session. She gets €10 per week in pocket money. What percentage of her pocket money does she spend swimming if she goes twice a week?
70%
A new computer costs €600 + VAT of 20%. What is the total price of the computer with the VAT included?
€720
Is {8, 3, 11, 7} the same as {3, 7, 8, 11}
YES. Both sets contain the exact same elements.
What is 25% of 200
50
Paul puts €12 into his bank account after spending the rest of his €60 birthday money. What percentage of his birthday money did he spend?
80%
A woman bought a new watch for €100 and sold it on for €127. Calculate the percentage profit she made.
27%
Is {8, 3, 11, 7} a subset of
{2, 4, 6, 3, 1, 9, 11, 8, 15, 12} ?
NO. The element 7 is not in the set.
Write 8.5% as a decimal
0.085
How many subsets does the following set have?
{ 1, 3, 5 }
8
{1}, {3}, {5}, {1, 3}, {1,5}, {3,5}, {1, 3, 5}, {}.