Ratio and proportion

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 is the ratio of red toy cars to all toy cars if there are 3 red cars and 7 other cars?

Back

The ratio is 3:10.

Front

If 4 eggs are needed for 12 Yorkshire puddings, how many eggs are needed for 18 Yorkshire puddings?

Back

6 eggs are needed.

Front

What is the formula to find the equivalent ratio?

Back

To find an equivalent ratio, multiply or divide both terms of the ratio by the same non-zero number.

Front

In a class of 10 boys and 14 girls, what is the ratio of girls to boys?

Back

The ratio of girls to boys is 14:10, which simplifies to 7:5.

Front

What is the exchange rate if $3 equals 2 Dinars?

Back

The exchange rate is 1.5 Dinars for every dollar.

Front

How do you convert Dinars to dollars using the exchange rate of $3 to 2 Dinars?

Back

To convert Dinars to dollars, multiply the amount in Dinars by 1.5.

Front

If you share 100 in the ratio 7:10:3, how much does each part receive?

Back

The amounts are 35, 50, and 15 respectively.

Front

What is a proportion?

Back

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