Solve Multistep Problems and Assess Reasonableness

Solve Multistep Problems and Assess Reasonableness

Students will solve word problems that involve two and three steps using whole numbers and all four operations.

I can...

I can solve word problems that involve two and three steps using whole numbers and all four operations.

Step It Out

Mr. Azqui designed a mural that will cover 340 square meters of an old factory wall. He and some volunteers have collected 13 gallons of paint to complete the mural. Each gallon of paint will cover 37 square meters. Is there enough paint to fill the mural? If so, how many additional square meters could be painted?

Multiple Choice

What do we need to find out?

• how much leftover paint there will be

• if there is enough paint to fill the mural

• how much paint has been collected

We're finding out how much paint is needed to fill the mural

• From the information given in the problem, you know that the mural covers 340 square meters, that 13 gallons of paint have been collected, and that each gallon of paint will cover 37 square meters.

Multiple Select

What sentences have the information you need to solve this problem? (There are three)

• Mr. Azqui designed a mural that will cover 340 square meters of an old factory wall.

• He and some volunteers have collected 13 gallons of paint to complete the mural.

• Each gallon of paint will cover 37 square meters.

• Is there enough paint to fill the mural?

• If so, how many additional square meters could be painted?

Poll

If we have 370 gallons of paint and we need 481 gallons of paint to cover the wall, do we have enough paint?

• Yes

• No

• Not sure

Yes, we will have enough paint!

Multiply 13 gallons of paint with 37 square meters that each gallon will cover. Since 13 × 37 = 481, the paint will cover 481 square meters. Compare 481 with 340, which is the number of square meters that the mural will cover. Since 481 > 340, there is enough paint to fill the mural.

Step it Out 2

At Hansel’s Orchard, 48 apples can fit in a basket. One day, Mr. Kelvin and some friends pick enough apples to fill 28 baskets. It takes 8 apples to make a jar of applesauce. How many jars of applesauce can Mr. Kelvin make from these apples?

Open Ended

Read this paragraph again and tell me what information it gives you: At Hansel’s Orchard, 48 apples can fit in a basket. One day, Mr. Kelvin and some friends pick enough apples to fill 28 baskets. It takes 8 apples to make a jar of applesauce. How many jars of applesauce can Mr. Kelvin make from these apples?

What information does the paragraph give us?

• 48 apples in a basket

• Mr. Kelvin and his friends pick 28 baskets of apples.

• 8 apples are needed per jar of applesauce

Multiple Choice

How can you solve the problem?

• Add 48 + 28. Then subtract 8 from the sum.

• Divide 48 by 8. Then multiply the quotient by 28.

• Multiply 28 × 48. Then divide the product by 8.

Multiply!

Combine the equal groups to find the total number of apples picked. There are 28 baskets. There are 48 apples in each basket. Multiply 28 × 48. Then divide the total number of apples by 8 apples for each jar to find the number of jars of applesauce that Mr. Kelvin can make.

Mr. Kelvin can make 168 jars of applesauce.

Since 28 × 48 = 1,344, the total number of apples is 1,344. Divide the total number of apples by 8 apples needed for each jar to find the number of jars of applesauce that Mr. Kelvin can make. Since 1,344 ÷ 8 = 168, Mr. Kelvin can make 168 jars of applesauce.