We included **H****MH Into Math Grade 1 Answer Key**** PDF** **Module 7 Lesson 5 Represent Bigger Unknown and Smaller Unknown Problems with a Visual Model** to make students experts in learning maths.

## HMH Into Math Grade 1 Module 7 Lesson 5 Answer Key Represent Bigger Unknown and Smaller Unknown Problems with a Visual Model

I Can use visual models and write equations to show bigger and smaller unknowns.

**Spark Your Learning**

How can you show a way to solve the problem?

Answer:

Explanation:

In the aquarium. there are 7 more fish than plants

There are 16 fish

The subtraction equation that solves the problem is

16 – 7 = 9

There are 9 plants in the aquarium.

Read the problem. In the aquarium. there are 7 more fish than plants. There are 16 fish. How many plants are in the aquarium? Have children use tools to show the problem.

**Build Understanding**

A. Liz has 6 model airplanes. Serge has 5 more model airplanes than Liz. How many model airplanes does Serge have?

How can you draw to show the problem?

Answer:

B. Use the bar model to show the problem another way.

Equation: ____

Serge has ___ model airplanes.

Answer:

Explanation:

Liz has 6 model airplanes

Serge has 5 more model airplanes than Liz

The addition equation that helps to solve the problem is

6 + 5 = 11

So, Serge has 11 model airplanes.

**Turn and Talk** How does using tools help you understand the bar model?

**Step It Out**

1. Theresa has 13 books. Marnie has 9 fewer books than Theresa. How many books does Marnie have?

A. Label each bar.

B. Write the number of books Theresa has.

C. Write how many fewer books Mamie has.

D. Marnie has ___ books. Equation: ___

Answer:

Explanation:

Theresa has 13 books

Marnie has 9 fewer books than Theresa

The subtraction equation that solve the problem is

13 – 9 = 4

So, Marine has 4 books.

2. Ralph has 6 more apples than Alice. Ralph has 15 apples. How many apples does Alice have?

A. Label each bar.

B. Write the number of apples Ralph has.

C. Write how many more apples Ralph has.

D. Alice has ___ apples. Equation: ___

Answer:

Explanation:

Ralph has 6 more apples than Alice.

Ralph has 15 apples

The subtraction equation that solve the problem is

15 – 6 = 9

So, Alice has 9 apples.

**Step It Out**

3. Ricky has 9 seashells. Ricky has 5 fewer seashells than Mort. How many seashells does Mort have?

A. Write the name to label each bar.

B. Write the number of seashells Ricky has.

C. Write how many fewer seashells Ricky has.

D. Write an equation to model the problem.

E. Write the number of seashells Mort has in the bar model.

Equation: _____

Mort has ___ seashells.

Answer:

Explanation:

Ricky has 9 seashells

Ricky has 5 fewer seashells than Mort

The addition equation that solve the problem is

9 + 5 = 14

So, Mort has 14 seashells.

**Check Understanding Math Board**

**Complete the bar model. Write an equation.**

Question 1.

There are 17 blue cubes. There are 9 fewer red cubes than blue cubes. How many red cubes are there?

Equation: ____

There are ___ red cubes.

Answer:

Explanation:

There are 17 blue cubes

There are 9 fewer red cubes than blue cubes

The subtraction equation that solve the problem is

17 – 9 = 8

So, there are 8 red cubes.

**On Your Own**

**Reason Complete the bar model. Write an equation.**

Question 2.

August collects 5 stones. Sylvia collects 6 more stones than August. How many stones does Sylvia collect?

Equation: ___

Sylvia collects ___ stones.

Answer:

Explanation:

August collects 5 stones

Sylvia collects 6 more stones than August

The addition equation that solve the problem is

5 + 6 = 11

So, Sylvia collects 11 stones.

Question 3.

There are 3 oranges.

There are 6 fewer oranges than apples. How many apples are there?

Equation: ____

There are ___ apples.

Answer:

Explanation:

There are 3 oranges.

There are 6 fewer oranges than apples

The addition equation that solve the problem is

3 + 6 = 9

So, There are 9 apples.

Question 4.

Christina has 6 pencils. Christina has 2 more pencils than Alison. How many pencils does Alison have?

Equation: ____

Alison has ___ pencils.

Answer:

Explanation:

Christina has 6 pencils

Christina has 2 more pencils than Alison

The subtraction equation that solve the problem is

6 – 2 = 4

So, Alison has 4 pencils.

**On Your Own**

**Reason Complete the bar model. Write an equation.**

Question 5.

There are 6 green crayons. There are 7 more yellow crayons than green crayons. How many yellow crayons are there?

Equation: ____

There are ___ yellow crayons.

Answer:

Explanation:

There are 6 green crayons

There are 7 more yellow crayons than green crayons

The addition equation that solve the problem is

6 + 7 = 13

So, there are 13 yellow crayons.

Question 6.

**Open Ended** Grade names 16 animals that have lungs. Lucas names fewer animals than Grade. How many animals could Lucas name? How many fewer does he name than Grade?

_______

Equation: ___

Lucas names ___ animals.

Lucas names ___ fewer animals.

Answer:

Explanation:

Grade names 16 animals that have lungs

Lucas names fewer animals than Grade

Grade could have names 16 animals and Lucas could have named 8 animals

So, Lucas named 8 fewer animals than Grade.

**I’m in a Learning Mindset!**

Who should I talk with to learn more about how to solve word problems? What questions can I ask?