McGraw Hill My Math Grade 1 Chapter 3 Lesson 5 Answer Key Use Near Doubles to Add

All the solutions provided inÂ McGraw Hill My Math Grade 1 Answer Key PDF Chapter 3 Lesson 5 Use Near Doubles to Add will give you a clear idea of the concepts.

Explore and Explain

Explanation:
I used to model the problem
I shown the doubles fact 3 + 3
Then i took away 1 cube
3 + 2 = 5
So, the addition number sentence is 3 + 2 = 5.

Teacher Directions: Use to model. Show the doubles fact 3 + 3 on the billboard. Add or take away one cube from one of the groups of cubes. Trace the cubes. Write the addition number sentence.

See and Show

You can use near doubles facts to find a sum. If you know 5 + 5 = 10, you can find 5 + 6 and 5 + 4.

Use to model. Write the addition number sentence.

Question 1.

Explanation:
The doubles fact is 4 + 4 = 8
The doubles plus 1 is 4 + 5 = 9.

Question 2.

Explanation:
The doubles fact is 3 + 3 = 6
The doubles minus 1 is 3 + 2 = 5.

Talk Math How do doubles facts help you learn near doubles facts?
The doubles facts helps us to learn the near doubles either by adding or subtracting 1 from the doubles.

On My Own

Use to model. Find each sum.

Question 3.
2 + 2 = ____
2 + 3 = ____

Explanation:
The doubles fact isÂ  2 + 2 = 4
The doubles plus 1 is 2 + 3 = 5.

Question 4.
3 + 3 = ____
3 + 2 = ____

Explanation:
The doubles fact is 3 + 3 = 6
The doubles minus 1 is 3 + 2 = 5.

Question 5.
8 + 7 = ____

Explanation:
The doubles fact is 7 + 7 = 14
I drew doubles plus 1
The addition number sentence is 8 + 7 = 15.

Question 6.
7 + 7 = ____

Explanation:
The doubles fact is 7 + 7 = 14.

Question 7.
6 + 6 = ____

Explanation:
The doubles fact is 6 + 6 = 12.

Question 8.
6 + 5 = ____

Explanation:
The doubles fact is 5 + 5 = 10
Doubles plus 1 is 6 + 5 = 11.

Question 9.

Explanation:
7 + 7 = 14
7 + 6 = 13
So, the sum of 7 and 6 is 13.

Question 10.

Explanation:
7 + 7 = 14
7 + 8 = 15
So, the sum of 7 and 8 is 15.

Question 11.

Explanation:
4 + 4 = 8
4 + 3 = 7
So, the sum of 4 and 3 is 7.

Question 12.

Explanation:
5 + 5 = 10
5 + 4 = 9
So, the sum of 5 and 4 is 9.

Question 13.

Explanation:
5 + 5 = 10
So, the sum of 5 and 5 is 10.

Question 14.

Explanation:
5 + 5 = 10
5 + 6 = 11
So, the sum of 5 and 6 is 11.

Question 15.

Explanation:
The sum of 7 and 3 is 10.

Question 16.

Explanation:
The sum of 7 and 5 is 12.

Question 17.

Explanation:
The sum of 7 and 4 is 11.

Problem Solving

Solve. Write the doubles foot that helped you solve the problem.

Question 18.
Tyra sees 5 beetles. Sara sees 6 beetles. How many beetles do they see in all?
____ beetles
____ + ___ = ____

Explanation:
Tyra sees 5 beetles
Sara sees 6 beetles
The doubles fact is 5 + 5 = 10
Doubles fact plus 1 is 5 + 6 = 11
So, they saw 11 beetles in all.

Question 19.
Adam has 9 red flowers and 8 purple flowers. How many flowers does he have in all?
_____ flowers

____ + ___ = ____

Explanation:
8 purple flowers
Doubles fact is 9 + 9 = 18
Doubles fact minus 1 is 9 + 8 = 17
So, Adam ha s17 flowers in all.

HOT Problem Devon has 6 pets. Maya has 7 pets. The answer is 13 pets. What is the question?
________________________
________________________
________________________
Devon has 6 pets. Maya has 7 pets. How many pets do they have in all?

McGraw Hill My Math Grade 1 Chapter 3 Lesson 5 My Homework Answer Key

Practice

Find each sum.

Question 1.
4 + 4 = _____
4 + 5 = ____

Explanation:
The doubles fact is 4 + 4 = 8
The doubles plus 1 is 4 + 5 = 9.

Question 2.
8 + 8 = ____
8 + 7 = ____

Explanation:
The doubles fact is 8 + 8 = 7
The doubles minus 1 is 8 + 7 = 15.

Question 3.
6 + 5 = ____

Explanation:
The doubles fact is 5 + 5 = 10
The doubles plus 1 is 6 + 5 = 11.

Question 4.
6 + 6 = ____

Explanation:
The doubles fact is 6 + 6 = 12.

Question 5.

Explanation:
7 + 7 = 14
7 + 6 = 15
So, the sum of 7 and 6 is 13.

Question 6.

Explanation:
The doubles fact is 7 + 7 = 14.

Question 7.

Explanation:
7 + 7 = 14
7 + 8 = 15
So, the sum of 7 and 8 is 15.

Solve. Write the doubles fact that helped you solve the problem.

Question 8.
Paul is a dog walker. He walks 7 small dogs. He walks 6 large dogs. How many dogs does he walk in all?

____ dogs
____ + ____ = ____

Explanation:
Paul is a dog walker
He walks 7 small dogs
He walks 6 large dogs
Doubles fact is 7 + 7 = 14
Doubles minus 1 is 7 + 6 = 13
So, Paul walks 13 dogs in all.

Question 9.
There are 9 girls and 8 boys in Mariaâ€™s class who walk to school. How many children in her class walk to school in all?
____ children
____ + ____ = ____

Explanation:
There are 9 girls and 8 boys in Mariaâ€™s class who walk to school
The doubles fact is 8 + 8= 16
The doubles plus 1 is 9 + 8 = 17
So, 17 children walk to school.

Vocabulary Check

Circle the missing word.

doubles plus 1 doubles minus 1

Question 10.
If you know that 8 + 8 = 16, then you can use ____ to find 8 + 7.