Combining Fractions

What must you have to add and subtract fractions?

• Common numerators
• Different numerators
• Different denominators
• Common denominators

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

Which is correct?

• Same signs, add and keep

• Different signs, subtract

Tags

CCSS.7.NS.A.1C

Answer in simplest form.
1/6 + 1/6

• 1/12
• 2/12
• 2/6
• 1/3

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

Answer in simplest form.
-5/8 + 3/8

• 1
• 8/8
• -2/8
• -1/4

Tags

CCSS.7.NS.A.1C

 $\frac{2}{12}-\frac{3}{12}$  

• 5/12

• -5/24

• -1/12

• 6/144

Tags

CCSS.7.NS.A.1C

 $-\frac{15}{16}-\frac{7}{16}$  

•  $\frac{1}{2}$  

•  $1\frac{3}{8}$  

•  $-1\frac{3}{8}$  

•  $-\frac{1}{2}$  

Tags

CCSS.7.NS.A.1C

What is the least common denominator of 6/8 and 4/12?

• 12
• 24
• 8
• 16

2/9 - (-1/3) = 

• 7/6
• 5/9
• -1/3
• 8/27

Tags

CCSS.7.NS.A.1C

3/5 - 7/10

• -1/10
• 10/15
• -10/5
• 15/15

Tags

CCSS.7.NS.A.1C