Fractions & Ratios: IB Math 1E

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

What does it mean if the ratio of A to B is 3:4?

Back

It means for every 3 parts of A, there are 4 parts of B.

Front

How do you convert a ratio to a fraction?

Back

To convert a ratio to a fraction, write the first term as the numerator and the second term as the denominator.

Front

If the ratio of two quantities is 5:6, what is the total number of parts?

Back

The total number of parts is 5 + 6 = 11 parts.

Front

What is the relationship between fractions and ratios?

Back

Fractions can be expressed as ratios, where the numerator is the part and the denominator is the whole.

Front

How do you find an unknown quantity in a ratio problem?

Back

Set up a proportion based on the given ratios and solve for the unknown quantity.

Front

What is the formula for finding the equivalent ratio?

Back

Multiply or divide both terms of the ratio by the same non-zero number.

Front

How do you express a ratio in simplest form?

Back

Divide both terms of the ratio by their GCD until no further simplification is possible.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.