Addition and Subtraction of Fractions

like fractions

• Common fractions that you can judge other numbers against
• two fractions having same denominators
• a number written as a whole number with a fraction
• a fraction where the numerator and the denominator do not share a common factor

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.5.NF.A.1

CCSS.5.NF.A.2

Add these Fractions

• 2/4
• 3/4
• 4/8
• 1

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

5/8 - 1/2 

• 9/8
• 1 1/8
• 1/8
• 3/8

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/2 + 2/3 =

• 3/5
• 7/6
• 3/6

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

1/4 + 2/6 =

• 1 1/12
• 12/12
• 7/12 
• 5/12

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

improper fraction

• the smallest number that is the multiple of two or more other numbers
• a fraction equivalent to or larger than one whole where the numerator is larger than or equal to the denominator
• Common fractions that you can judge other numbers against
• a model using partial products to show multiplication

• 5/14
• 3/7
• 5/7
• 5/14

mixed number

• two fractions having same denominators
• A whole number that is a common multiple of all the denominators of a set of fractions.
• a number written as a whole number with a fraction
• A whole number that is a common multiple of all the denominators of a set of fractions.

• 3/8
• 3/16
• 1/8
• 2/8