5.3 Estimating Sums and Differences of Fractions

Front

What is the process of estimating the sum of fractions?

Back

To estimate the sum of fractions, round each fraction to the nearest benchmark fraction (like 0, 1/2, or 1) and then add those rounded values.

Front

How do you determine if an estimate is greater than or less than the actual sum of fractions?

Back

Compare the rounded values used in the estimate to the actual fractions. If the rounded values are higher than the actual fractions, the estimate is greater.

Front

What is a benchmark fraction?

Back

A benchmark fraction is a simple fraction that is easy to work with, such as 0, 1/2, or 1, used for estimating sums or differences.

Front

How do you add fractions with different denominators?

Back

To add fractions with different denominators, find a common denominator, convert each fraction, and then add the numerators.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

What is the first step in subtracting fractions?

Back

The first step in subtracting fractions is to ensure they have a common denominator.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 9/10 - 3/8?

Back

1/2.

Tags

CCSS.7.NS.A.1C

Front

What is the result of 5/8 + 2/5?

Back

1.

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Front

How do you estimate the total amount of toppings when adding fractions?

Back

Round each fraction to the nearest benchmark fraction and then add the rounded values.

Front

What is the importance of estimating in real-life applications?

Back

Estimating helps to quickly assess quantities and make decisions without needing exact calculations.

Front

How much fabric does Michaela have left after using 1/2 yard of each color?

Back

Michaela has about 1 yard of fabric left after using 1/2 yard of each color.

Tags

CCSS.7.EE.B.3