1st Semester Math Review

Front

What is a ratio?

Back

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

Front

How do you convert fluid ounces to cups?

Back

To convert fluid ounces to cups, divide the number of fluid ounces by 8, since 1 cup equals 8 fluid ounces.

Front

If Carl spends $5 on movies for every $15 on video games, what is the ratio of movies to video games?

Back

The ratio of movies to video games is 1:3.

Front

How do you calculate the cost of multiple items on sale?

Back

To calculate the cost of multiple items on sale, first find the unit price, then multiply by the number of items.

Front

What is the formula for direct variation?

Back

In direct variation, y = kx, where k is a constant.

Front

If a car travels 280 miles in 7 hours, what is its speed in miles per hour?

Back

The speed is 40 miles per hour (280 miles ÷ 7 hours).

Front

How do you divide fractions?

Back

To divide fractions, multiply by the reciprocal of the divisor. For example, 1/4 ÷ 2/5 = 1/4 × 5/2 = 5/8.

Front

What is the total cost for 7 bags of chips if 2 bags cost $5?

Back

The total cost for 7 bags is $17.50.

Front

What is the missing value in a ratio table?

Back

The missing value can be found by using equivalent ratios or cross-multiplication.

Front

How do you find a missing value in a proportion?

Back

To find a missing value in a proportion, set up a cross-multiplication equation and solve for the unknown.