Ready Math Grade 6 - Unit 3 Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

How do you find the total number of students in a class given the number of boys and girls?

Back

Add the number of boys to the number of girls. For example, if there are 8 boys and 14 girls, the total is 8 + 14 = 22.

Front

What is the ratio of boys to total students if there are 8 boys and 14 girls?

Back

The ratio of boys to total students is 8:22.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD). For example, the ratio 8:22 can be simplified to 4:11.

Front

What is the ratio of red marbles to yellow marbles if there are 2 red and 5 yellow?

Back

The ratio of red to yellow marbles is 2:5.

Front

If Dan uses 2 tablespoons of baking soda and 6 tablespoons of vinegar, what is the ratio of baking soda to vinegar?

Back

The ratio of baking soda to vinegar is 1:3.

Front

If Dan then uses 3 tablespoons of baking soda and 9 tablespoons of vinegar, what is the ratio of baking soda to vinegar?

Back

The ratio remains 1:3.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they can be simplified to the same form.

Front

How do you determine if two ratios are equivalent?

Back

Cross-multiply the ratios. If the products are equal, the ratios are equivalent.

Front

What is the total number of circles if there are 4 STARS and the ratio of STARS to ALL CIRCLES is 4:11?

Back

If the ratio is 4:11, then the total number of circles is 11/4 times the number of STARS, which is 11.