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.