All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 3 Addition Strategies to 20 will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Answer Key Chapter 3 Addition Strategies to 20
Essential Question?
How do I use strategies to add numbers?
Am I Ready
Question 1.
Circle the addition
+ – =
Answer:
Explanation:
I drew a circle around the + sign as it is symbol of addition.
Question 2.
Circle the equals
+ – =
Answer:
Explanation:
I drew a circle around the = sign as it is the symbol of equals.
Add.
Question 3.
Answer:
Explanation:
The sum of any number and 0 will be the number itself
So, 3 + 0 = 3.
Question 4.
Answer:
Explanation:
Start at 2, count 2 more
3, 4
The sum of 2 and 2 is 4
So, 2 + 2 = 4.
Question 5.
Answer:
Explanation:
Start at 7, count 1 more
8
The sum of 7 and 1 is 8
So, 7 + 1 = 8.
Question 6.
Answer:
Explanation:
Start at 6, count 3 more
7, 8, 9
The sum of 6 and 3 is 9
So, 6 + 3 = 9.
Question 7.
Answer:
Explanation:
Start at 4 count 1 more
5
The sum of 4 and 1 is 5
So, 4 + 1 = 5.
Question 8.
Answer:
Explanation:
Start at 4, count 3 more
5, 6, 7
The sum of 4 and 3 is 7
So, 3 + 4 = 7.
Use the pictures to write an addition number sentence.
Question 9.
Answer:
Explanation:
There are 4 boats in first group and 2 boats in second group
Start at 4, count 2 more
5, 6
The sum of 4 and 2 is 6
So, 4 + 2 = 6.
How Did I Do? Shade the boxes to show the problems you answered correctly.
Answer:
Explanation:
I shaded 9 boxes as i answered all problems correctly.
My Math Words
Review Vocabulary
minus (-) plus (+)
Use the review words to fill in the blanks below. Then write an addition and a subtraction number sentence.
Answer:
Explanation:
The sign for addition is plus
The sign for difference is minus
3 + 2 = 5 is a addition number sentence
4 – 2 = 2 is a subtraction number sentence.
My Vocabulary Cards
Teacher Directions:
Ideas for Use
- Have students arrange the cards in alphabetical order.
- Ask students to write a tally mark on each card every time they read or hear the word.
On a number line, start with the greater number and count up.
Answer:
Explanation:
The above picture shows the addition problem using a number line, starting with the greater number and counting up.
Add with doubles and subtract one.
Answer:
Explanation:
The above picture shows a addition problem with doubles minus 1.
A line with number labels.
Answer:
Explanation:
The above picture shows a line with number labels.
Any numbers being added together.
Answer:
Explanation:
The above picture shows numbers being added together
8 and 9 are the addends.
Two addends that are the same.
Answer:
Explanation:
The above picture shows adding using doubles fact.
Add with doubles and add one.
Answer:
Explanation:
The above picture shows adding doubles and adding 1 more.
My Foldable
Foldables
Follow the steps on the back to make your Foldable.
Foldables
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