12-2: 6th grade math review

Front

What is a ratio?

Back

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

Front

How do you express a decimal as a percent?

Back

To express a decimal as a percent, multiply the decimal by 100 and add a percent sign. For example, 0.8 becomes 80%.

Front

What is the least common multiple (LCM)?

Back

The least common multiple (LCM) of two numbers is the smallest number that is a multiple of both numbers.

Front

How do you find the LCM of 7 and 8?

Back

List the multiples of each number: Multiples of 7: 7, 14, 21, 28, 35, 42, ...; Multiples of 8: 8, 16, 24, 32, 40, 48, ...; The LCM is 56.

Front

What is the product of 4.7 and 2.65?

Back

The product of 4.7 and 2.65 is 12.455.

Front

If Jose swims 3 laps in 2 minutes, how long will it take him to swim 27 laps?

Back

It will take Jose 18 minutes to swim 27 laps.

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide to find the unknown value.

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 the formula for finding the perimeter of a rectangle?

Back

The perimeter of a rectangle is found by adding together the lengths of all four sides (Perimeter = 2 × (length + width)).