We included HMH Into Math Grade 1 Answer Key PDF Module 3 Lesson 4 Add 3 Numbers to make students experts in learning maths.
HMH Into Math Grade 1 Module 3 Lesson 4 Answer Key Add 3 Numbers
I Can use strategies to decide how to add three numbers.
Spark Your Learning
How can you use tools to show how to add 3 numbers?
Answer:
Explanation:
I chose the numbers 4, 2 and 7
First add 4 and 2
4 + 2 = 6
Then add 6 and 7
6 + 7 = 13
So, 4 + 2 + 7 = 13.
Have children choose three of the numbers shown at the top of the page and record them at the top of the workspace. Ask children to add the three numbers. Have them decide which two addends to add together first and draw to explain what they did,
Build Understanding
There are 6 bees at the front of the hive, 4 bees inside the hive, and 2 bees behind the hive. How many bees are at the hive?
A. How can you use a strategy to group the addends in any order to solve the problem?
____ + ___ = ____
So, 6 + 4 + 2 = ___
Answer:
Explanation:
There are 6 bees at the front of the hive, 4 bees inside the hive, and 2 bees behind the hive
6 + 4 + 2 =
First add 4 and 2
4 + 2 = 6
Then add 6 and 6
6 + 6 = 12
So, 6 + 4 + 2 = 12.
B. How can you use a different strategy to group the addends in any order to solve the problem?
___ + ___ = ____
So, 6 + 4 + 2 = ____
Answer:
Explanation:
There are 6 bees at the front of the hive, 4 bees inside the hive, and 2 bees behind the hive
6 + 4 + 2 =
First add 6 and 4
6 + 4 = 10
Then add 10 and 2
10 + 2 = 12
So, 6 + 4 + 2 = 12.
C. There are ___ bees at the hive.
Answer:
There are 12 bees at the hive.
Explanation:
There are 6 bees at the front of the hive, 4 bees inside the hive, and 2 bees behind the hive.
6 + 4 + 2 = 12
There are 12 bees at the hive.
Turn and Talk How can strategies help you choose which numbers to add first when there are three addends?
Step It Out
1. 4 + 1 + 4 = 
A. Here is one way you can solve the problem.
Count on. THINK: Start at ‘4. Count on 1.
Answer:
Explanation:
Start at 4. Count on 1
4, 5
Add 5 and 4
5 + 4 = 9
So, 4 + 1 + 4 = 9.
B. Here is another way to solve the problem.
Use doubles. THINK: 4 + 4
Answer:
Explanation:
Think 4 + 4 = 8
Add 8 and 1
8 + 1 = 9
So, 4 + 1 + 4 = 9.
C. So, 4 + 1 + 4 = ___.
Answer:
4 + 1 + 4 = 9.
Check Understanding Math Board
Circle the two addends you decide to add first. Then solve.
Question 1.
There are 3 birds in a tree. There are 5 birds in another tree. There are 2 birds on the ground. How many birds are there?
3 + 5 + 2 = 
___ + ___ = ___
___ birds
Answer:
8 + 2 = 10
Explanation:
There are 3 birds in a tree. There are 5 birds in another tree. There are 2 birds on the ground
3 + 5 + 2 =
First add 3 and 5
3 + 5 = 8
Then add 8 and 2
8 + 2 = 10
So, there are 10 birds.
On Your Own
Solve.
Question 2.
Reason Michael reads 4 books. Kay reads 3 books. Sam reads 6 books. How many books do they read?
____ books
- Explain how you chose which two addends to add first.
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Answer:
13 books
Explanation:
Michael reads 4 books. Kay reads 3 books. Sam reads 6 books
First add 4 and 3
4 + 3 = 7
Then add 7 and 6
7 + 6 = 13
So, they read 13 books.
Solve two ways. Circle the addends you add first.
Question 3.
6 + 3 + 3 = 
____ + ___ = ____
Answer:
Explanation:
6 + 3 + 3 =
Add 3 and 3
3 + 3 = 6
Add 6 and 6
6 + 6 = 12
So, 6 + 3 + 3 = 12.
Question 4.
6 + 3 + 3 =
____ + ___ = ____
Answer:
Explanation:
6 + 3 + 3 =
Add 6 and 3
6 + 3 = 9
Add 9 and 3
9 + 3 = 12
So, 6 + 3 + 3 = 12.
I’m in a Learning Mindset!
When adding 6 + 3 + 3 two ways, which way worked better for me? Why?
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