We included HMH Into Math Grade 1 Answer Key PDF Module 3 Lesson 3 Represent Addition of 3 Numbers to make students experts in learning maths.

I Can use objects and draw to show how to add three numbers.

Amy sees a small garden with 6 tomato plants, 2 pepper plants, and 3 strawberry plants.
How many plants are in the garden?

Explanation:
Amy sees a small garden with 6 tomato plants, 2 pepper plants, and 3 strawberry plants
6 + 2 + 3 =
6 + 2 = 8
8 + 3 = 11
So, there are 11 plants in the garden.

Read the problem aloud to children. Allow children to choose tools. Ask them to represent the problem with objects to find how many plants are in the garden. Have them draw to show what they did.

Build Understanding

Mrs. Smith uses 6 apples, 3 oranges, and 4 bananas in her fruit salad. Carla wants to know how many pieces of fruit Mrs. Smith uses.
6 + 3 + 4 =

Carla uses 6 , 3 and 4 to show the problem.
A. What addition fact does this show?

Explanation:
The above picture shows that 6 and 3 are added to make 9
So, 9 + 4 = 12.

B. What is another concrete model Carla could use to find the sum?

C. Mrs. Smith uses __ pieces of fruit.

Explanation:
Mrs. Smith uses 6 apples, 3 oranges, and 4 bananas in her fruit salad
6 + 3 + 4
3 + 4 = 7
6 + 7 = 13
So, Mrs. Smith uses 13 pieces of fruit.

Turn and Talk Why can you choose which two addends you add first?

Step It Out

1. There are 5 black pens, 2 red pens, and 4 blue pens on the desk. How many pens are on the desk?
A. THINK:

• Show each addend. 5 + 2 + 4 =

B. So, 5 + 2 + 4 = ___.
There are ___ pens on the desk.

Explanation:
There are 5 black pens, 2 red pens, and 4 blue pens on the desk
One way:
5 + 2 + 4 =
5 + 2 = 7
7 + 4 = 11
Other way:
5 + 2 + 4
2 + 4 = 6
5 + 6 = 11.
So, There are 11 pens on the desk.

Check Understanding Math Board

Question 1.
Steven draws a picture using 3 circles, 2 squares, and 1 triangle. How many shapes does he use?
___ + ___ + ___ = ___
Steven uses ___ shapes.
3 + 2 + 1 = 6
Steven uses 6 shapes

Explanation:
Steven draws a picture using 3 circles, 2 squares, and 1 triangle
3 + 2 + 1 =
3 + 2 = 5
5 + 1 = 6
So, Steven uses 6 shapes.

Solve. Draw to show your thinking.

Question 2.
Reason Zoe sees 4 birds, 5 ducks, and 3 turtles at the lake. How many animals does she see?

____ + ___ + ___ = ____
____ animals
4 + 5 + 3 = 12
12 animals

Explanation:
Zoe sees 4 birds, 5 ducks, and 3 turtles at the lake
4 + 5 + 3 =
4 + 5 = 9
9 + 3 = 12
So, Zoe saw 12 animals.

Solve two ways. Circle to group the two addends you will add first.

Question 3.

Explanation:
I drew a circle around the two addends that i add first
2 + 8 = 10
7 + 3 = 10
These equations are two ways to add 3 numbers.

I’m in a Learning Mindset!

What do I already know that can help me add three numbers?
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