All the solutions provided in **McGraw Hill My Math Grade 1 Answer Key PDF Chapter 3 Lesson 8 Add in Any Order **will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 1 Answer Key Chapter 3 Lesson 8 Add in Any Order

**Explore and Explain**

Answer:

Explanation:

I used to model the problem

4 + 3 = 7

3 + 4 = 7

If you change the order of the addends, you get the same sum

So, 4 + 3 = 3 + 4 = 7.

**Teacher Directions**: Use to model. Show 4 + 3. Write the sum. Now change the order. Trace and color to match. Write the sum. Describe what you notice about the sums.

**See and Show**

You can change the order of the addends and get the same sum.

**Write the addends. Use to add. Write the sum.**

Question 1.

Answer:

Explanation:

I used to solve the problem

2 + 4 = 6

4 + 2 = 6

If you change the order of the addends, you get the same sum

So, 2 + 4 = 4 + 2 = 6.

Question 2.

Answer:

Explanation:

I used to solve the problem

1 + 3 = 4

3 + 1 = 4

If you change the order of the addends, you get the same sum

So, 1 + 3 = 3 + 1 = 4.

**Talk Math** Tell how you can show that 1 + 9 has the same sum as 9 + 1.

Answer:

1 + 9 = 10

9 + 1 = 10

If you change the order of the addends, you get the same sum

So, the sum will not change and is 10.

**Helpful Hint**

If you change the order of the addends, you get the same sum.

**On My Own**

**Write the addends. Add. Write the sum.**

Question 3.

Answer:

Explanation:

I used to solve the problem

2 + 3 = 5

3 + 2 = 5

If you change the order of the addends, you get the same sum

So, 2 + 3 = 3 + 2 = 5.

Question 4.

Answer:

Explanation:

I used to solve the problem

1 + 5 = 6

5 + 1 = 6

If you change the order of the addends, you get the same sum

So, 1 + 5 = 5 + 1 = 6.

Question 5.

Answer:

Explanation:

I used to solve the problem

3 + 4 = 7

4 + 3 = 7

If you change the order of the addends, you get the same sum

So, 3 + 4 = 4 + 3 = 7.

Question 6.

Answer:

Explanation:

I used to solve the problem

5 + 3 = 8

3 + 5 = 8

If you change the order of the addends, you get the same sum

So, 5 + 3 = 3 + 5 = 8.

**Add.**

Question 7.

Answer:

Explanation:

The sum of 6 + 1 and 1 + 6 is 7

The sum of 1 + 7 = 8.

Question 8.

Answer:

Explanation:

The sum of 3 + 3 = 6

The sum of 5 + 3 and 3 + 5 is 8.

**Problem Solving**

**Write two ways to add. Solve.**

Question 9.

4 ladybugs climb onto a leaf. 8 more join them. How many ladybugs are on the leaf?

____ + ____

____ + ____

____ ladybugs

Answer:

12 ladybugs

Explanation:

4 ladybugs climb onto a leaf

8 more join them

4 + 8 = 12

8 + 4 = 12

If you change the order of the addends, you get the same sum

So, 12 ladybugs are on the leaf.

Question 3.

3 butterflies are in the garden. 0 butterflies join them. How many butterflies are in the garden?

____ + ____

____ + ____

____ butterflies

Answer:

3 butterflies

Explanation:

3 butterflies are in the garden

0 butterflies join them

3 + 0 = 3

0 + 3 = 3

If you change the order of the addends, you get the same sum

So, 3 butterflies are in the garden.

**Write Math** Can you subtract in any order? Use Explain.

______________________

______________________

______________________

______________________

Answer:

No, we cannot subtract in any order

For subtracting we must have greater number first and the lesser number next

Example: 9 – 4 = 5.

### McGraw Hill My Math Grade 1 Chapter 3 Lesson 8 My Homework Answer Key

**Practice**

**Write the addends. Then add.**

Question 1.

Answer:

Explanation:

I used to solve the problem

3 + 2 = 5

2 + 3 = 5

If you change the order of the addends, you get the same sum

So, 3 + 2 = 2 + 3 = 5.

Question 2.

Answer:

Explanation:

I used to solve the problem

4 + 3 = 7

3 + 4 = 7

If you change the order of the addends, you get the same sum

So, 4 + 3 = 3 + 4 = 7.

**Add. Circle the addends that have the same sum.**

Question 3.

6 + 5 = ____ 5 + 6 = ______________________

Answer:

Explanation:

I drew a circle around the addends as they have same sum

If you change the order of the addends, you get the same sum

6 + 5 = 5 + 6 = 11.

Question 4.

3 + 5 = ____ 3 + 6 = ______________________

Answer:

3 + 5 = 8, 3 + 6 = 9

The addends are not same and the sum is also not same.

**Write two ways to add. Solve.**

Question 5.

Greg walks up 7 steps to get to his apartment. Bill walks up 8 steps to get to his apartment. How many steps do they walk up in all?

____ + _____

____ + _____

____ steps

Answer:

15 steps

Explanation:

Greg walks up 7 steps to get to his apartment

Bill walks up 8 steps to get to his apartment

7 + 8 = 15

8 + 7 = 15

If you change the order of the addends, you get the same sum

So, they walkup 15 steps in all.

**Test Practice**

Question 6.

Lynn walks 3 blocks to the library. Then she walks 8 blocks to her dance lesson. How many blocks does she walk in all?

(A) 9

(B) 10

(C) 11

(D) 12

Answer:

(C) 11

Explanation:

Lynn walks 3 blocks to the library

Then she walks 8 blocks to her dance lesson

3 + 8 = 11

8 + 3 = 11

If you change the order of the addends, you get the same sum

So, she walks 11 blocks in all.

**Math at Home** Show your child 4 plates and 2 cups. Have him or her write two addition sentences about them.