Subtracting Mixed Numbers with Regrouping

What is the first step in subtracting mixed numbers with regrouping?

• Finding a common denominator

• Multiplying the fractions

• Subtracting the whole numbers

• Adding the fractions

Tags

CCSS.7.NS.A.1C

Why do we need a common denominator when subtracting fractions?

• To convert the fractions to whole numbers

• To make the fractions larger

• To ensure the fractions represent the same sized pieces

• To simplify the fractions

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the common denominator for the fractions 5/8 and 5/6?

• 18

• 12

• 30

• 24

How do we represent 5/6 with a denominator of 24?

• 20/24

• 15/24

• 10/24

• 5/24

Tags

CCSS.3.NF.A.3B

CCSS.4.NF.A.1

What is the process called when we rewrite 3 as 2 plus 1?

• Simplifying

• Regrouping

• Multiplying

• Dividing

Tags

CCSS.6.EE.A.1

What do we get when we rewrite 3 and 15/24 as 2 and 39/24?

• A simplified fraction

• An equivalent mixed number

• A whole number

• A decimal

What do the yellow tiles represent in the fraction tiles?

• The amount we are taking away

• The amount we have

• The common denominator

• The whole number

Tags

CCSS.4.NF.B.3A

What do we do with the red tiles in the fraction tiles?

• Ignore them

• Use them to represent the amount we are taking away

• Multiply them by the yellow tiles

• Add them to the yellow tiles

Tags

CCSS.4.NF.B.3A

What is the result of subtracting 3 and 5/8 minus 1 and 5/6?

• 1 and 5/24

• 1 and 19/24

• 1 and 25/24

• 1 and 15/24

Tags

CCSS.7.NS.A.1C

Why does the denominator remain the same after subtraction?

• Because the fractions are simplified

• Because the whole is still cut into the same number of pieces

• Because the numerator changes

• Because the fractions are multiplied

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D