Adding and Subtracting Mixed Numbers with Area Model

The video tutorial covers the use of the area model to solve both subtraction and addition problems involving mixed numbers. It begins with an introduction to the subtraction problem, explaining how to set it up using boxes to represent whole numbers and fractions. The teacher demonstrates solving the subtraction problem by converting fractions to a common denominator. The tutorial then transitions to addition, where a similar approach is used to set up and solve the problem, emphasizing the importance of finding a common denominator for fractions.

How many full boxes are needed for the subtraction problem setup?

• Six

• Seven

• Five

• Eight

Tags

CCSS.2.OA.A.1

What method is used to solve both the subtraction and addition problems?

• Number line

• Traditional algorithm

• Mental math

• Area model

Tags

CCSS.5.NBT.B.7

How is the area model beneficial in solving these problems?

• It reduces the number of steps

• It visualizes the problem

• It eliminates the need for fractions

• It automatically simplifies fractions

Tags

CCSS.3.NF.A.2B

CCSS.3.NF.A.1

What is the purpose of converting a box into tenths in the subtraction process?

• To make subtraction easier

• To increase the number of boxes

• To simplify the fraction

• To decrease the total value

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the final result of the subtraction problem?

• Three whole boxes and nine tenths

• Three whole boxes and eight tenths

• Two whole boxes and eight tenths

• Four whole boxes and ten tenths

Tags

CCSS.5.NBT.B.7

What is the significance of the number 10 in the subtraction process?

• It's the final result

• It's the number of tenths taken away

• It's a multiple of five, facilitating conversion to tenths

• It's the total number of boxes

Tags

CCSS.5.NBT.B.7

How many sets of boxes are drawn for the addition problem?

• Three

• Two

• One

• Four

Tags

CCSS.2.OA.A.1

What is the common denominator found for the addition problem?

• 20

• 5

• 10

• 15

What is the final result of the addition problem in simplest form?

• 6 and 2/15

• 5 and 10/15

• 6 and 1/15

• 5 and 11/15

Tags

CCSS.7.NS.A.1C

Why do we need to find a common denominator in the addition problem?

• To subtract the fractions

• To make the fractions larger

• To convert to whole numbers

• To simplify the addition

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2