Week 15 mixed

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two or more numbers is the smallest number that is a multiple of each of the numbers.

Front

How do you find the LCM of 18 and 24?

Back

To find the LCM of 18 and 24, list the multiples of each number: Multiples of 18: 18, 36, 54, 72, ...; Multiples of 24: 24, 48, 72, ...; The LCM is 72.

Front

What is a fraction?

Back

A fraction represents a part of a whole and is expressed as 'a/b', where 'a' is the numerator and 'b' is the denominator.

Front

How do you divide a fraction by a whole number?

Back

To divide a fraction by a whole number, multiply the denominator of the fraction by the whole number. For example, 1/2 ÷ 4 = 1/(2*4) = 1/8.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you simplify the ratio of 120 shirts to 80 pants?

Back

To simplify the ratio 120:80, divide both numbers by their greatest common divisor (GCD), which is 40. So, 120 ÷ 40 = 3 and 80 ÷ 40 = 2. The simplified ratio is 3:2.

Front

What is a percentage?

Back

A percentage is a way of expressing a number as a fraction of 100. It is denoted using the symbol '%'. For example, 25% means 25 out of 100.

Front

How do you calculate 25% of 8 slices of pizza?

Back

To calculate 25% of 8 slices, multiply 8 by 0.25 (which is 25% as a decimal). So, 8 * 0.25 = 2 slices.

Front

What is profit?

Back

Profit is the financial gain obtained when the revenue from sales exceeds the costs associated with producing or purchasing the goods.

Front

How do you calculate the cost price if the selling price is $25 and the profit is 20%?

Back

To find the cost price, use the formula: Cost Price = Selling Price / (1 + Profit Percentage). Here, Cost Price = 25 / (1 + 0.20) = 25 / 1.20 = 20.83.