Refer to our Texas Go Math Grade 1 Answer Key Pdf to score good marks in the exams. Test yourself by practicing the problems from Texas Go Math Grade 1 Lesson 11.1 Answer Key Model Addition.

## Texas Go Math Grade 1 Lesson 11.1 Answer Key Model Addition

**Unlock the Problem**

Hanna has 4 red flowers in a .

She puts 2 more flowers in the .

How many flowers are in the ?

How can you use a model to find out?

**Read**

What information am I given?

__________ red flowers

__________ more flowers

**Plan**

What is my plan or strategy?

I can _____________

**Solve**

Show how you solve the problem.

Answer: 4 red flowers and 2 yellow flowers in the

HOME CONNECTION • Your child con model the concepts of joining, adding to, and putting together. He or she used a model to show the problems and solve.

**Try Another Problem**

**Use to help you. Complete the model and the number sentence.**

Question 1.

There are 7 dogs in the park. Then I more dog joins them. How many dogs are in the park now?

7 + 1 = ___________

Answer:

There are 7 dogs in the park. Then I more dog joins them.

7 + 1 = 8

8

Question 2.

Some birds are sitting in the tree. Four more birds sit in the tree. Then there are 9 birds. How many birds were in the tree before?

_________ + 4 = 9

Answer: 5

Some birds are sitting in the tree.

Four more birds sit in the tree.

Then there are 9 birds.

9 – 4 = 5

Question 3.

There are horses in the field. Some more horses run to the field. Now there are 10 horses in the field. How many horses ran to the field?

4 + _________ = 10

Answer:

There are horses in the field. Some more horses run to the field.

Now there are 10 horses in the field.

10 – 4 = 6

**Math Talk**

**Mathematical Processes**

How does a model help you solve Exercise 1? Explain

Answer:

**Share and Show**

**Use to help you. Complete the model and the number sentence.**

Question 4.

Luis has 12 crayons. 5 of the crayons are red. The rest are blue. How many crayons are blue?

5 + ________ = 12

Answer:

Given,

Luis has 12 crayons. 5 of the crayons are red.

12 – 5 = 7

Therefore 7 crayons are blue.

**Problem Solving**

Question 5.

**H.O.T.** Some ducks are swimming in a pond. 3 more ducks swim in the pond. Then there are 6 ducks in the pond. How many ducks were in the pond before?

__________ + 3 = 6

Answer:

Some ducks are swimming in a pond.

3 more ducks swim in the pond.

Then there are 6 ducks in the pond.

6 – 3 = 3

Thus there were 3 ducks in the pond before.

Question 6.

**H.O.T. Multi-Step**

_______ bugs are flying. _________ more bugs fly with them. Now there are 10 bugs flying.

Answer:

7 bugs are flying.

3 more bugs fly with them.

Now there are 10 bugs flying.

**Daily Assessment Task**

**Use . Choose the correct answer.**

Question 7.

Use Diagrams Cho sees 3 red flowers. Ki sees 2 yellow flowers. How many flowers are there?

(A) 5

(B) 3

(C) 2

Answer:

Given,

Cho sees 3 red flowers. Ki sees 2 yellow flowers.

3 + 2 = 5

Thus the correct answer is option A.

Question 8.

Ben has 5 books. Kelli has 3 books. Which number sentence shows how many books there are?

(A) 5 + 1 = 6

(B) 5 + 3 = 8

(C) 5 + 2 = 7

Answer:

Given,

Ben has 5 books. Kelli has 3 books.

5 + 3 = 8

Thus the correct answer is option B.

Question 9.

**Multi-Step** Some cats sit on a fence. 4 cats join them. Now there are 8 cats on the fence. How many cats were on the fence before?

(A) 3

(B) 2

(C) 4

Answer:

Given,

Some cats sit on a fence. 4 cats join them.

Now there are 8 cats on the fence.

8 – 4 = 4

Thus the correct answer is option C.

Question 10.

**Texas Test Prep** 6 bees are in the hive. 3 more bees fly into the hive. How many bees are in the hive now?

(A) 3

(B) 9

(C) 4

Answer:

Given,

6 bees are in the hive. 3 more bees fly into the hive.

6 + 3 = 9

Thus the correct answer is option B.

**TAKE HOME ACTIVITY** • Have your child describe each of the ports of a model using the number sentence 7 + 3 = 10.

Answer:

### Texas Go Math Grade 1 Lesson 11.1 Homework and Practice Answer Key

**Complete the model and number sentence.**

Question 1.

There are 4 plates on the table. You put 3 more plates on the table. How many plates are on the table now?

4 + 3 = ___________

Answer:

Given,

There are 4 plates on the table. You put 3 more plates on the table.

4 + 3 = 7

Question 2.

8 fish swim in a pond. Some more fish swim into the pond. Now there are 11 fish in the pond. How many fish swam into the pond?

8 + _________ = 11

Answer:

Given,

8 fish swim in a pond. Some more fish swim into the pond.

Now there are 11 fish in the pond.

11 – 8 = 3

**Problem Solving**

Question 3.

Some bees are flying around a flower. 7 more bees fly with them. Now there are 13 bees flying. How many bees were flying before?

________ + 7 = 13

Answer:

Given,

Some bees are flying around a flower.

7 more bees fly with them.

Now there are 13 bees flying.

13 – 7 = 6

Thus there were 6 bees flying before.

**Lesson Check**

**Choose the correct answer.**

Question 4.

Jerry sees 5 blue cars. Tina sees 6 red cars. How many cars are there?

(A) 5

(B) 11

(C) 6

Answer:

5 + 6 = 11

Thus the correct answer is option B.

Question 5.

Cal has 7 pens. Zeb has 2 pens. Which number sentence shows how many pens there are?

(A) 7 + 2 = 9

(B) 7 – 2 = 5

(C) 7 + 1 = 8

Answer:

Given,

Cal has 7 pens. Zeb has 2 pens.

7 + 2 = 9

Thus the correct answer is option A.

Question 6.

Casey has some shells. Sal gives Casey 4 shells. Now Casey has 6 shells. How many shells did Casey have before?

(A) 4

(B) 6

(C) 2

Answer:

Given,

Sal gives Casey 4 shells. Now Casey has 6 shells.

4 + 2 = 6

Thus the correct answer is option C.

Question 7.

3 squirrels are in a tree. 5 more squirrels join them. How many squirrels are in the tree now?

(A) 8

(B) 7

(C) 9

Answer:

Given,

3 squirrels are in a tree. 5 more squirrels join them

3 + 5 = 8

Thus the correct answer is option A.