4.5A add and subtract

4.5A add and subtract

by Patricia Piza

​Strip diagrams add and subtract

​You will learn to solve problems using strip diagrams, equations, and variables.

​Watch this video. Last year, in 3rd grade, you learned how to solve strip diagrams.

​4th grade

• ​Watch how she write her equations and solve for the variable.

Multiple Choice

• Jessica has 32 cookies. She put them evenly in 3 bags. Then she ate 4 cookies. How many cookies were left?

• Jessica has three bags of cookies. Each bag has 32 cookies. She ate 4 cookies. How many cookies were left?

• Jessica has three bags of cookies. Each bag has 32 cookies. She got 4 more cookies. How many cookies does she have now?

Multiple Choice

What strip diagram does this represent?

• Addition

• Subtraction

• multiplication

• division

Multiple Choice

What strip diagram does this represent?

• Addition

• Subtraction

• multiplication

• division

Multiple Choice

Addition or Subtraction?

• Addition

• Subtraction

Multiple Choice

Which equation matches the strip diagram?

• 22 + 21 + 20 = F

• F - 22 - 21 = 20

• 22 - 21 - 20 = F

Multiple Choice

Which equation matches the strip diagram?

• 200 + 100 + 100 + 50 - H = 800

• 200 + 100 + 100 + 50 + H = 800

• 200 + 100 + 50 + H = 800

Multiple Choice

What is the number sentence that goes with this strip diagram?

• 137-349=?

• 137+349=?

• 349-137=?

Multiple Choice

What is the number sentence that goes with this strip diagram?

• 259-87-28=?

• 259+87+28=?

• 87-28-259=?

Multiple Choice

Kyle has 3 barrels of apples. If each barrel contains 8 apples, what is the total number of apples that Kyle has? Choose the strip diagram that represents this word problem.