Addition and Subtraction with Strip Diagrams

The video tutorial explains how to use strip diagrams to represent and solve addition, subtraction, and comparison problems. It begins with an introduction to strip diagrams, followed by detailed examples of solving word problems using these diagrams. The tutorial covers addition by combining parts to find a total, subtraction by finding the difference from a total, and comparison by determining how much more is needed to reach a goal. Each section provides practical examples to illustrate the concepts.

What is the total number of cupcakes sold by the baker from Monday to Tuesday?

• 78 cupcakes

• 43 cupcakes

• 35 cupcakes

• 88 cupcakes

Which equation represents the total cupcakes sold over two days?

• 43 + 35

• 43 - 35

• 43 + 43

• 35 + 35

What does the total bar represent in an addition strip diagram?

• None of the above

• The difference between parts

• One of the parts

• The sum of parts

How many fish were left in the pet shop after some were sold?

• 22 fish

• 44 fish

• 68 fish

• 24 fish

What is the correct subtraction equation to find the remaining fish?

• 68 - 44

• 68 + 44

• 44 - 68

• 68 / 44

In subtraction strip diagrams, what is known initially?

• None of the above

• One part

• The total

• The difference

In the comparing strip diagram, what is the goal number of cans?

• 32 cans

• 65 cans

• 33 cans

• 97 cans

How many more cans are needed to reach the goal?

• 30 cans

• 65 cans

• 32 cans

• 33 cans

What does the missing part in a comparing strip diagram represent?

• The total

• The excess amount

• One of the parts

• The needed amount to reach the total

Which operation is used in a comparing strip diagram to find the missing part?

• Multiplication

• Division

• Subtraction

• Addition