Fractions Practice

What must you do first in order to add or subtract fractions with unlike denominators?

• add the numerators
• add the denominators
• find a common denominator
• find a common numerator

Tags

CCSS.7.NS.A.1C

Is this a correct answer?

• Yes, the student correctly added.
• No, you cannot add unlike denominators
• No, 5 + 7 is not 12
• No, 2 + 3 is not 5

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

• $\frac{12}{17}$

• $\frac{17}{20}$

• $\frac{20}{17}$

• $2\ \frac{1}{2}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

• 1

• $\frac{3}{6}$

• $\frac{1}{2}$

• 2

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Add the fractions. Simplify if needed.

• $\frac{13}{15}$

• $1\ \frac{7}{12}$

• 1

• $\frac{9}{15}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Add the fractions. Simplify if needed.

• $\frac{13}{15}$

• $1\ \frac{7}{12}$

• 1

• $\frac{9}{15}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

2/12 + 3/12

• 5/12
• 5/24
• 6/12
• 6/144

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

The number on top of the fraction bar is called the _______. The number under the fraction bar is called the ______.

• denominator; numerator
• numerator; denominator
• mixed number; fraction
• fraction; mixed number

Tags

CCSS.3.NF.A.1

CCSS.3.NF.A.2B

What is the the next step to finding this answer?

• Add the numerators (1+1=2)
• Multiply 12 X 1 for both fractions to find a new numerator
  
• Multiply to find each new numerator by the multiple used to get 12. (3 X1) (4 X 1)
• This is a mistake, you don't need to convert to twelfths

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

3/10  -  1/5

• 2/11
• 4/5
• 2/3
• 1/10

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2