Add and Subtract Fractions with Unlike Denominators 2

What is the difference?

• $\frac{13}{24}$

• $\frac{5}{24}$

• $\frac{12}{48}$

• $\frac{6}{5}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum?

• $\frac{12}{15}$

• $\frac{15}{12}$

• $1\ \frac{3}{15}$

• $1\ \frac{1}{5}$

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

Faith has $2\ \frac{1}{4}$ cups of flour. She only needs  $\frac{2}{3}$  cups of flour for her cake recipe. After she makes the cake, how much flour will she have left.

•  $1\ \frac{7}{12}$  

•  $1\ \frac{3}{12}$  

•  $2\ \frac{7}{12}$  

•  $2\ \frac{11}{12}$  

Tags

CCSS.7.NS.A.1C

Destiny was to feed her dog in the morning. She was to give the large dog 7/8 of a scoop of dog food and the smaller dog 1/4 of a scoop. How much more dog food does Destiny need to give the large dog?

• 3/8 scoop

• 5/8 scoop

• 1/2 scoop

• 1 scoop

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the sum of 5/12 and 9/16?

• 47/48
• 1/2
• 7/16
• 7/24

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

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

Owen ran $\frac{1}{3}$ of a mile and swam  $\frac{5}{6}$ of a mile. How much farther did he swim than run?  

•  $\frac{5}{18}$  of a mile

•  $\frac{3}{6}$  of a mile

•  $\frac{4}{3}$   of a mile

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

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

What is a good common denominator for this problem?

 $\frac{1}{8}+\frac{5}{6}$  

• 24

• 18

• 32

• 16

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2