Adding Fractions with Unlike Denominators

What is required to add fractions with different denominators?

• A common denominator

• Subtraction of numerators

• Multiplication of denominators

• A common numerator

What is the least common multiple of 10 and 4?

• 40

• 20

• 10

• 4

To adjust the fraction 7/10 to a new denominator of 20, what should be multiplied to the numerator?

• 10

• 2

• 5

• 4

What is the sum of 14/20 and 5/20?

• 19/40

• 9/20

• 29/20

• 19/20

Is the fraction 19/20 in its simplest form?

• It can be simplified to 9.5/10

• Yes

• No

• It can be simplified to 1/20