Adding and Subtracting Fractions Quiz

When adding fractions with the same denominator, what do you do with the numerators?

• Add them

• Divide them

• Subtract them

• Multiply them

Why does the denominator remain unchanged when adding fractions with the same denominator?

• Because it is the sum of the numerators

• Because it is the sum of the denominators

• Because it represents the total number of parts

• Because it is always the largest number

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

• Find a common denominator

• Multiply the denominators

• Subtract the smaller denominator from the larger one

• Add the numerators directly

How do you find a common denominator for fractions with different denominators?

• Multiply each fraction by 1

• Multiply each fraction by the other fraction's denominator

• Add the denominators together

• Subtract the smaller denominator from the larger one

In the example of adding 2/3 and 4/5, what is the common denominator used?

• 10

• 15

• 25

• 20

When subtracting fractions, what is the key difference compared to addition?

• The numerators are subtracted

• The denominators are subtracted

• The numerators are multiplied

• The denominators are added

In the subtraction example of 2/7 - 1/9, what is the common denominator used?

• 90

• 63

• 72

• 81

What is the result of subtracting 2/5 from 9/10 using the shortcut method?

• 1/5

• 1/2

• 3/5

• 2/5

In the advanced subtraction example, what is the alternative method to the shortcut?

• Multiplying the fractions first

• Using a calculator

• Finding a common denominator for both fractions

• Adding the fractions first

What is the simplified result of 25/50?

• 1/4

• 1/2

• 1/3

• 1/5