4th Grade - Adding and Subtracting Fractions

Front

What is the result of subtracting \( \frac{2}{12} \) from \( \frac{6}{12} \)?

Back

The result is \( \frac{1}{3} \).

Front

If Ben uses \( \frac{3}{12} \) pound of strawberries and \( \frac{2}{12} \) pound of blueberries, how do you find the total weight of berries used?

Back

Add the fractions: \( \frac{3}{12} + \frac{2}{12} = \frac{5}{12} \).

Front

How do you convert a mixed number like \( 3 \frac{1}{4} \) into an improper fraction?

Back

Multiply the whole number by the denominator and add the numerator: \( 3 \times 4 + 1 = 13 \), so it becomes \( \frac{13}{4} \).

Front

What is the sum of \( \frac{2}{10} \) and \( \frac{3}{10} \)?

Back

The sum is \( \frac{5}{10} \) which simplifies to \( \frac{1}{2} \).

Front

What is the difference when you subtract \( \frac{3}{10} \) from \( \frac{6}{10} \)?

Back

The difference is \( \frac{3}{10} \).

Front

How do you add fractions with the same denominator?

Back

Add the numerators and keep the denominator the same: \( \frac{a}{c} + \frac{b}{c} = \frac{a+b}{c} \).

Front

What is the first step in subtracting fractions with different denominators?

Back

Find a common denominator for both fractions.

Front

How do you convert an improper fraction back to a mixed number?

Back

Divide the numerator by the denominator to find the whole number, and the remainder becomes the new numerator.

Front

What is the process for adding mixed numbers?

Back

Add the whole numbers together, then add the fractions, and if necessary, convert the result into a mixed number.

Front

What is the least common multiple (LCM) and how is it used in adding fractions?

Back

The LCM of the denominators is used to find a common denominator for adding fractions.