Addition and Subtraction with Bar Models

Taking away a smaller number from the big number is called

• addition

• subtraction

Is this bar model addition or subtraction?

• addition

• subtraction

Is this an addition problem or a subtraction problem?

• addition

• subtraction

What number goes first when solving this problem?

• 280

• 98

Q1. What is 2 + 2?

• A) addition

• B) subtraction 

Look at the bar model. What would you use to solve?

• addition

• subtraction

An arrow pointing toward the model means...

• add

• subtract

What is the missing number?

• 42

• 52

• 26

Q1. What is 2 + 2?

• A) addition

• B) subtraction

Is this bar model addition or subtraction?

• addition

• subtraction