We included HMH Into Math Grade 3 Answer Key PDF Module 1 Lesson 2 Relate Addition and Multiplication to make students experts in learning maths.
HMH Into Math Grade 3 Module 1 Lesson 2 Answer Key Relate Addition and Multiplication
I Can write an addition equation and a multiplication equation to find a total to solve problems about equal groups.
Spark Your Learning
Ling is at a fair with her friends Jimmy and Pablo. At a game booth, they each get 4 balls. How many balls do Ling and her friends get?
Show more than one way to find the number of balls.
Answer:
Explanation:
Ling is at a fair with her friends Jimmy and Pablo
At a game booth, they each get 4 balls
There are 3 friends
Each friend gets 4 balls
3 groups of 4
So, 3 x 4 = 12
Therefore, Ling and her friends get 12 balls.
Turn and Talk How are the ways you found the total number of balls alike? How are they different?
Build Understanding
1. To win the ball-in-basket game, Reg needs to get both of the 2 game balls in the basket. Reg wins the game 4 times. How many balls does Reg get in the basket?
Show equal groups.
A. What addition equation can you write to solve this problem?
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B. Compare the addends. What pattern do you see?
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C. How many balls does Reg get in the basket?
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Answer:
Explanation:
To win the ball-in-basket game
Reg needs to get both of the 2 game balls in the basket
Reg wins the game 4 times
4 groups of 2
So, 4 x 2 = 8
2 + 2 + 2 + 2 = 8
The addends are equal, they follow increasing pattern
Therefore, Reg get 8 balls in the basket.
Turn and Talk Why does using repeated addition help you find how many balls Reg gets in the basket?
2. There are 3 players playing ring toss. Each player gets 5 rings. How many rings do the players get?
Show equal groups. Write an addition equation to find the number of rings.
A. What multiplication equation can you write for the addition equation?
B. How many rings do the players get? ____
Answer:
Explanation:
There are 3 players playing ring toss
Each player gets 5 rings
5 + 5 + 5 = 15
Therefore, the players will get 15 rings.
Connect to Vocabulary
When groups are equal, you can multiply to find how many in all.
Multiplication Equation
4 groups of 2 items in each group = 8 items in all
The factors are the numbers being multiplied. The product is the answer to a multiplication problem.
Check Understanding Math Board
Question 1.
There are 8 players at the fish bowl game. Each player gets 3 balls. Write an addition and a multiplication equation for the problem. How many balls do the 8 players get?
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Answer:
24 balls
Explanation:
There are 8 players at the fish bowl game
Each player gets 3 balls
3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 = 24
Or 8 x 3 = 24
So, 8 players will get 24 balls.
On Your Own
Question 2.
Model with Mathematics Ervin buys 5 packs of postcards like these. How many postcards are in the packs?
- Write an addition equation to model the problem. ____________
- How many postcards are there? ___________
Answer:
Ervin buys 5 packs of postcards like these
There are 8 cards in each pack
8 + 8 + 8 + 8 + 8 = 40
So, there are 40 postcards in 5 packs.
Question 3.
Hal packs 4 bags of potatoes. What is the weight of the 4 bags of potatoes?
- Write an addition equation and a multiplication equation.
Add. _______
Multiply. _______ - What is the weight of the 4 bags of potatoes? _______
Answer:
Hal packs 4 bags of potatoes
Each bag of potato weighs 9 pounds
4 bags of 9 pounds
9 + 9 + 9 + 9 = 36 or
4 x 9 = 36
So, The weight of 4 bags of potatoes is 36 pounds.
Question 4.
Attend to Precision Diya writes 7 × 9 = 63 to find the number of players on 7 baseball teams. Describe what each of the factors represents in the multiplication equation. Explain your thinking.
Answer:
When groups are equal, you can multiply to find how many in all.
Multiplication Equation
7 x 9 = 63
7 teams of 9 players in each team = 63 players in all
The factors are the numbers being multiplied
The product is the answer to a multiplication problem
7 represents the number of teams
9 represents the number of players in each team
So, 63 is the number of players in all the 7 teams.
I’m in a Learning Mindset!
What types of decisions did I make when solving Problem 2?
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