Exploring Addition with Bar Models

What is the main purpose of using a bar model in addition?

• To make it harder to understand

• To visually represent the addition

• To avoid actual calculation

• To use more colors in math

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What is the first step in using a bar model for addition?

• Drawing the bar model

• Selecting colors

• Counting the units

• Adding the numbers

Tags

CCSS.2.OA.A.1

What colors are used to represent the numbers 18 and 7 in the example?

• Red and blue

• Green and yellow

• Blue and white

• Not specified

Tags

CCSS.1.NBT.A.1

How many units are counted to represent the number 18?

• 7 units

• 18 units

• 10 units

• 25 units

Tags

CCSS.2.OA.A.1

What does the larger portion of the bar model represent?

• Difference between 18 and 7

• Number 7

• Number 18

• Sum of 18 and 7

Tags

CCSS.2.NBT.B.7

Which of the following is not a part of creating a bar model?

• Connecting two numbers

• Ignoring the larger number

• Drawing accurately to scale

• Using different colors

Tags

CCSS.5.NF.A.1

CCSS.5.NF.A.2

What does the smaller portion of the bar model represent in the example?

• Number 18

• Number 7

• The total sum

• None of the above

Tags

CCSS.1.OA.A.1

What is the total sum of 18 and 7?

• 30

• 20

• 25

• 15

Tags

CCSS.2.OA.A.1

How is the sum of 18 and 7 calculated using the bar model?

• By counting the units

• By subtraction

• By drawing

• By estimation

Tags

CCSS.2.OA.C.3

What mathematical concept is demonstrated by adding 8 and 7 to get 15 in the process?

• Subtraction

• Division

• Multiplication

• Addition and regrouping

Tags

CCSS.2.OA.C.3