adding and subtracting fractions pretest

What is the first step in solving this problem? 
⅘ + ½ =

• Add the top parts of the fraction
• Rewrite the fractions in the simplest form. 
• Find a common denominator. 
• Make each fraction into an improper faction. 

Tags

CCSS.7.NS.A.1C

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 the least common denominator you could use to subtract 1/3 and 1/4?

• 3
• 4
• 24
• 12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 5 1/2
• 1 1/6
• 5 5/14
• 4 19/24

Tags

CCSS.7.NS.A.1C

• 5 1/2
• 1 1/6
• 5 5/14
• 4 19/24

Tags

CCSS.7.NS.A.1C

• 5 1/2
• 1 1/6
• 5 5/14
• 4 19/24

Tags

CCSS.7.NS.A.1C

What is the difference of these fractions in lowest terms?

• 7/9
• 1/5
• 12/20
• 1/20

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

• 4/5
• 4/10
• 2/5
• 5

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

2/5  +1/5 + 1/5=

• 3/15
• 4/5
• 2/5
• 4/15

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

When adding the fractions 2/12, 2/6, and 3/9, what should you use as the LCD?

• 36
• 24
• 12
• 6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2