All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 6 Two-Digit Addition and Subtraction will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Answer Key Chapter 6 Two-Digit Addition and Subtraction
Essential Question
How can I add and subtract two-digit numbers?
Answer:
First, add the numbers in the one’s place and write the carry in the tens place. Add the numbers in the tens place to make the sum.
I can subtract two-digit numbers by subtracting the numbers in one place. Next, I will subtract the numbers in the tens place.
Am I Ready?
Write how many tens and ones.
Question 1.
____________ tens ______________ ones = ______________
Answer:
6 tens 4 ones = 64
Explanation:
There are 6 ten rods and 4 ones cubes
So, 6 tens and 4 ones is 64.
Question 2.
____________ tens ______________ ones = ______________
Answer:
8 tens 6 ones = 86
Explanation:
There are 8 ten rods and 6 ones cubes
So, 8 tens and 6 ones is 86.
Add.
Question 3.
9 + 1 = _____________
Answer:
10
Explanation:
The sum of 9 and 1 is 10
So, 9 + 1 = 10.
Question 4.
4 + 2 = _____________
Answer:
6
Explanation:
The sum of 4 and 2 is 6
So, 4 + 2 = 6.
Subtract.
Question 5.
6 – 2 = _____________
Answer:
4
Explanation:
The difference of 6 and 2 is 4
So, 6 – 2 = 4.
Question 6.
7 – 6 = ______________
Answer:
1
Explanation:
The difference of 7 and 6 is 1
So, 7 – 6 = 1.
Question 7.
Maggie has 18 stickers. She gives 9 of them away. How many stickers does Maggie have left?
Answer:
9 stickers
Explanation:
Maggie has 18 stickers
She gives 9 of them away
Subtract to find
18 – 9 =
Use doubles fact 9 + 9 = 18
So, 18 – 9 = 9
Therefore, Maggie have 9 stickers left with her.
My Math Words
Review Vocabulary
add
ones
subtract
tens
Find the sum or difference. Use the review words to complete each sentence.
Answer:
Explanation:
I found the sum and difference and filled the blanks using the review words.
My Vocabulary Cards
Teacher Directions: Ideas for Use
- Ask students to use the blank cards to write their own vocabulary cords.
- Have students use blank cards to write basic addition and subtraction facts. Have students write the answer on the back of each card.
My Foldable
Follow the steps on the back to make your Foldable.
Answer:
Explanation:
I difference of 60 and 20 is 40
The related addition fact is 20 + 40 = 60.