Math Lab Unit 1 Review Fraction and Decimals

Front

What is a fraction?

Back

A fraction represents a part of a whole and is written as 'a/b', where 'a' is the numerator (the number of parts) and 'b' is the denominator (the total number of equal parts).

Front

What is a decimal?

Back

A decimal is a way of expressing a number that is not whole, using a point to separate the whole number from the fractional part. For example, 0.5 represents half.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator. For example, 1/4 = 1 ÷ 4 = 0.25.

Front

What is the average speed formula?

Back

Average speed is calculated by dividing the total distance traveled by the total time taken. Formula: Average Speed = Total Distance / Total Time.

Front

How do you find the total earnings from hourly work?

Back

To find total earnings, multiply the hourly rate by the number of hours worked. Formula: Total Earnings = Hourly Rate × Hours Worked.

Front

What is the process to add fractions?

Back

To add fractions, they must have a common denominator. If they don't, find the least common denominator, convert the fractions, and then add the numerators.

Front

How do you subtract fractions?

Back

To subtract fractions, ensure they have a common denominator. If they don't, find the least common denominator, convert the fractions, and then subtract the numerators.

Front

What is the formula for calculating miles per gallon (MPG)?

Back

MPG is calculated by dividing the total miles driven by the total gallons of gas used. Formula: MPG = Total Miles / Total Gallons.

Front

How do you multiply fractions?

Back

To multiply fractions, multiply the numerators together and the denominators together. For example, (1/2) × (3/4) = (1×3)/(2×4) = 3/8.

Front

What is the process to divide fractions?

Back

To divide fractions, multiply by the reciprocal of the second fraction. For example, (1/2) ÷ (3/4) = (1/2) × (4/3) = 4/6 = 2/3.