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

The list shows the number of trees Isaiah planted in three years.

He planted 521 trees in the first year.

He planted 387 trees in the second year.

He planted 438 trees in the third year.

Isaiah wants to plant a total of 2,000 trees. How many more trees does Isaiah need to plant?

• 654

• 1,346

• 874

• 764

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

Labeling

Eric bought 600 flower bulbs. He bought 280 iris bulbs, 75 tulip bulbs, and the rest are lilies. How many lily bulbs did Eric buy? Let the letter L represent the number of lili bulbs Eric buys.

Drag labels to their correct position on the image

L

A 320

D 245

C 205

280

600

B 355

75

Drag and Drop

A school had 845 students last year. This year, the school enrolled 127 new students but 68 students transferred to another school. Now, the school has

Placeholder

students.

Drag these tiles and drop them in the correct blank above

904 students

906 students

908 students

910 students

Math Response

Mr. Starky decided to give a pizza party to every class on campus. He bought 189 pizza slices for 5th and 6th grade. He bought 213 pizza slices for 7th and 8th grade. How many pizza slices did he buy total?

Type answer here

Correct Answer: 402

Deg^°

Rad

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.