We included HMH Into Math Grade 3 Answer Key PDF Module 9 Addition and Subtraction Strategies to make students experts in learning maths.
HMH Into Math Grade 3 Module 9 Answer Key Addition and Subtraction Strategies
Architect
An architect is someone who designs buildings. Every building you go into—a school, a store, a library, and more—started as a drawing or model made by an architect. Architects sometimes use unique materials in their buildings. For example, some have designed buildings using plastic bottles as a way to recycle them. One building, shown on the next page, was designed by an architect in Taiwan. It is constructed with bottles. The building can withstand fires and earthquakes. Some people have built homes by filling plastic bottles with sand and then mortaring them together like bricks.
Stem Task:
Design a building made of unique materials. First, think about the kind of building it will be. Then, make a model or draw your building idea. Show and describe your model or drawing to a classmate.
Learning Mindset
Resilience Manages the Learning Process
Everyone has preferred learning strategies. Some people like to work alone and others like to work in a group. Some like to read directions while others prefer to hear them. Some prefer to build a model while others prefer to draw or write a description. What learning strategies work best for you? Think about how you can use these strategies to bounce back from setbacks.
Reflect
Question.
What tools and strategies did you use to design your building? Why did you choose them?
Question.
Did you think about and reject some of your ideas? How did you settle on your final idea?
Which Nest is Home?
- Help each bird find its home nest. Draw a line to match the answers for the problems above the birds to the answers for the problems below the nests.
Answer:
Turn and Talk
- Look back at your work. What is similar about all eight problems?
- Why can all of these problems be solved without using paper and pencil?
Are You Ready?
Complete these problems to review prior concepts and skills you will need for this module.
Add and Subtract Tens
Write how many tens. Then add or subtract.
Question 1.
70 + 20 = ___
__ tens + __ tens = __ tens
70 + 20 = ___
Answer:
70 + 20 = 90
7 tens + 2 tens = 9 tens
70 + 20 = 90
Explanation:
The addition of 70 and 20 is 90
7 tens + 2 tens = 9 tens.
Question 2.
80 – 60 = ___
__ tens – __ tens = __ tens
80 – 60 = ___
Answer:
80 – 60 = 20
8 tens – 6 tens = 2 tens
80 – 60 = 20
Explanation:
The subtraction of 80-60 is 20
6tens subtracted from 8tens then the answer is 2 tens.
Make a Ten
Make a ten to find the sum. Show your work. Write the sum.
Question 3.
9 + 6 = ___
10 + __ = ___
Answer:
9 + 6 = 15
10 + 5 = 15
Explanation:
The addition of 9 and 6 is 15
The addition of 10 and 5 is 15.
Question 4.
8 + 4 = ___
10 + __ = ___
Answer:
8 + 4 = 12
10 + 2 = 12
Explanation:
The addition of 8 and 4 is 12
The addition of 10 and 2 is 12.
Addition and Subtraction Facts
Find the sum or difference.
Question 5.
9 – 4 = ___
Answer:
9-4=5
Explanation:
The subraction of 9-4 is 5.
Question 6.
___ = 5 + 6
Answer:
11=5+6
Explanation:
The addition of 5 and 6 is 11.
Question 7.
___ = 9 + 9
Answer:
18=9+9
Explanation:
The addition of 9 and 9 is 18.
Question 8.
__ = 15 – 6
Answer:
9=15-6
Explanation:
The subraction of 15-6 is 9.
Question 9.
17 – 8 = ___
Answer:
17-8=9
Explanation:
The subraction of 17-8 is 9.
Question 10.
___ = 6 + 8
Answer:
14=6+8
Explanation:
The addition of 6+8 is 14.
Question 11.
8 + 8 = ___
Answer:
8+8=16
Explanation:
The addition of 8+8 is 16.
Question 12.
___ = 12 – 3
Answer:
9=12-3
Explanation:
The subraction of 12-3 is 9.
Question 13.
13 – 7 = ___
Answer:
13-7=6
Explanation:
The subraction of 13-7 is 6.