Two-Step Story Problems

Our Goal: Solve problems that require more than one solution step.

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

What is the first step in the problem?

What do you know for sure?

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

We know we have _____ sheep, so. . .

____ sheep

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

We know we have 9 sheep, so I need to draw __more horses to get to ____.

9 sheep ____ horses

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

What is the second step in the problem?

9 sheep ____ horses

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

What is the second step in the problem? Add 8 horses plus 2 more horses equals 10 horses.

9 sheep 8 horses ___ horses

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

How else could we solve the story problem? 17A

S H H

Retell and SolveLana had 9 sheep and some horses on her farm. Altogether

there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

How else could we solve the story problem? What about a Math Mountain and an equation?

17

9 + 8then8+2

Retell and Solve

Lana had 9 sheep and some horses on her farm. Altogether there were 17 animals. Her grandmother gave her 2 more horses. How many horses does she have now?

How else could we solve the story problem? Is there a way to add first and then subtract?17 total animals plus 2 horses is 19. 19 minus 9

sheep is 10 horses!

Retell and Solve

There are 14 computers in the school library. 5 girls and 3 boys are using the computers right now. How many more students can use a computer?

1.Retell the problem in your own words.2.What is the first step? What do you know for

sure?

Retell and Solve

There are 14 computers in the school library. 5 girls and 3 boys are using the computers right now. How many more students can use a computer?

What is the second step?

Retell and Solve

There are 14 computers in the school library. 5 girls and 3 boys are using the computers right now. How many more students can use a computer?

Retell and Solve

• There were 15 packages at the post office. 6 were sent out. Then, people brought in 8 more. How many packages are at the post office now?

1.Retell the problem in your own words.2.What is the first step? What do you know for

sure?

Retell and Solve

• There were 15 packages at the post office. 6 were sent out. Then, people brought in 8 more. How many packages are at the post office now?

What is the second step?

Retell and Solve

• There were 15 packages at the post office. 6 were sent out. Then, people brought in 8 more. How many packages are at the post office now?

Retell and Solve

• Mrs. Yu has 4 yellow flowers, 5 white flowers and some purple flowers in a vase. She has a total of 18 flowers. How many purple flowers are in the vase?

1.Retell the problem in your own words.2.What is the first step? What do you know for

sure?

Retell and Solve

• Mrs. Yu has 4 yellow flowers, 5 white flowers and some purple flowers in a vase. She has a total of 18 flowers. How many purple flowers are in the vase?

What is the second step?

Retell and Solve

• Mrs. Yu has 4 yellow flowers, 5 white flowers and some purple flowers in a vase. She has a total of 18 flowers. How many purple flowers are in the vase?

Problem Solving Strategy: Reasonable Answers

Choose a Reasonable Answer.Choose an answer that makes sense!

Problem Solving Strategy: Reasonable Answers

Claire has 8 red pencils. She has more blue pencils than red pencils. How many blue

pencils could Claire have?

Problem Solving Strategy: Reasonable Answers

Claire has 8 red pencils. She has more blue pencils than red pencils. How many blue pencils could Claire have?

Is 3 a reasonable answer for this problem? Why?

Problem Solving Strategy: Reasonable Answers

Claire has 8 red pencils. She has more blue pencils than red pencils. How many blue pencils could Claire have?

What would be a reasonable answer?

Problem Solving Strategy: Reasonable Answers

Paige saw 3 goats, 7 pigs, and some horses at the fair. She saw 15 animals altogether. How many horses did Paige see?

Is 16 a reasonable answer for the problem? Why?

Problem Solving Strategy: Reasonable Answers

Paige saw 3 goats, 7 pigs, and some horses at the fair. She saw 15 animals altogether. How many horses did Paige see?

Is 16 a reasonable answer for the problem? Why?

Problem Solving Strategy: Reasonable Answers

1.Work with a partner.2.Read the problem.3. Retell the problem in your own words.4.Look at each answer to find which answer is

reasonable.5.Circle the most reasonable answer.

Great Thinking!