5.3 Estimate Fractions Sums and Differences

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

How do you estimate the sum of two fractions?

Back

To estimate the sum of two fractions, round each fraction to the nearest whole number and then add the rounded numbers.

Front

What is the process for estimating the difference of two fractions?

Back

To estimate the difference of two fractions, round each fraction to the nearest whole number and then subtract the smaller rounded number from the larger one.

Front

What does it mean to combine fractions?

Back

Combining fractions means adding them together to find the total amount when they represent parts of a whole.

Front

How do you find a common denominator?

Back

To find a common denominator, identify the least common multiple (LCM) of the denominators of the fractions you are working with.

Front

What is the least common multiple (LCM)?

Back

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

Front

What is the importance of estimating in math?

Back

Estimating helps to quickly assess the reasonableness of an answer and can simplify calculations.

Front

How can you visualize fractions?

Back

Fractions can be visualized using pie charts, number lines, or by dividing objects into equal parts.

Front

What is the difference between proper and improper fractions?

Back

A proper fraction has a numerator smaller than its denominator (e.g., 1/2), while an improper fraction has a numerator larger than or equal to its denominator (e.g., 5/4).

Front

What is a mixed number?

Back

A mixed number is a whole number combined with a proper fraction (e.g., 1 1/2).