Random Math Review

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 3.836 to the nearest whole number gives 4.

Front

How do you calculate the cost of one item from a total cost?

Back

To find the cost of one item, divide the total cost by the number of items. For example, if 6 sandwiches cost $30.72, then each sandwich costs $30.72 ÷ 6 = $5.12.

Front

How do you convert a decimal to a percent?

Back

To convert a decimal to a percent, multiply the decimal by 100 and add a percent sign. For example, 0.128 as a percent is 0.128 × 100 = 12.8%.

Front

Back

Front

What is the measurement of a right angle?

Back

A right angle measures 90 degrees.

Front

What is the process of simplifying fractions?

Back

Front

What does it mean to round to the nearest tenth?

Back

Rounding to the nearest tenth means looking at the hundredths place to decide whether to round the tenths place up or keep it the same. For example, 3.86 rounded to the nearest tenth is 3.9.

Front

How do you find the average of a set of numbers?

Back

To find the average, add all the numbers together and then divide by the count of the numbers. For example, the average of 2, 4, and 6 is (2 + 4 + 6) ÷ 3 = 4.

Front

What is the formula for finding the area of a rectangle?

Back

The area of a rectangle is found by multiplying its length by its width. Area = length × width.

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is denoted by the symbol '%'. For example, 50% means 50 out of 100.