Multi-Step Word Problems w/ Strip Diagrams & Equations

LO: SWBAT represent multi-step problems with equations or
strip diagrams that have a letter standing for the unknown.

DOL: SW represent multi-step problems with equations or
strip diagrams that have a letter standing for the unknown

correctly in at least 4 out of 5 problems.

K.6(A) identify two‐dimensional shapes, including circles, triangles, rectangles, and squares as special rectangles

TEKS 4.5A represent multi‐step problems involving the four operations with whole numbers using strip diagrams and equations with a letter standing for the
unknown quantity (whole number). (R)

Lesson Vocabulary 4 Corners

The remaining amount when subtracting one

or more parts

Sum

Difference

Equation

Strip Diagram

Lesson Vocabulary 4 Corners

A number sentence that includes an equal

sign

Sum

Difference

Equation

Strip Diagram

5

Lesson Vocabulary

Sum

Difference

Equation

Strip Diagram

35

15

a

35 - 15 = 20

35 - 15 = 20

15 + 20 = 35

6

Lesson Vocabulary

Product

Quotient

Equation

Strip Diagram

66 ÷ 6 = 11

11 x 6 = 66

11 x 6 = 66

11

11

11

11

11

11

a

A strip diagram is strategy that we use to help organize and solve word problems.

• Know parts

• total is missing

• parts are not the same

• The total is known

• The parts are different

• The parts are known

• total is missing

• Parts are the same

• The whole is known

• Parts are missing

• Parts are the same

• You will have problems that only have equations

• you have to pick the equation that you would use to solve the problem

• You do not have to actually solve the problem just show what you would do to solve it

• answers will look like this :2,140 + 5,627 = E

Students will travel in groups of 12 during the field trip to the art museum. There are 6 students per group. How many students are at the museum?

• Sometimes we will have problems that are multistep

• Still ask if you know the total?

• Look at each strip diagram in the answers

• In this problem we are taking away 12 two times from the total. So this will show up in the long bar

• Since he got three booklets with 20 in each booklet, we should see 20 on there twice

Equations are only used to show how you would solve a problem. You don't have to do anything but pick the correct way to solve it.

7

Let’s represent.

A business owner earned $94 for one job and $72 for a
second job. The owner spent $28 on supplies.

Draw a strip diagram that represents m, the amount of
money the owner has now?

What information is unknown?

12

Let’s practice.

The owner of a business earned $82 for a job and $74 for another
job. The owner spent $29 on supplies.

Lets create a strip diagram represents m, the amount of money the owner
has now?

SW represent multi-step problems with equations or strip diagrams that

have a letter standing for the unknown correctly in at least 4 out of 5

problems.