We included HMH Into Math Grade 1 Answer Key PDF Module 3 Lesson 2 Add in Any Order to make students experts in learning maths.

I Can show that when you change the order of addends the sum stays the same.

How many trucks and trains are there?

Explanation:
There are 2 trucks
There are 9 trains
The sum of 2 and 9 is 11
2 + 9 = 11 or 9 + 2 = 11
So, there are 11 trucks and trains.

The table shows the number of toys in the toy box. How many trucks and trains are there? Ask children to write two addition facts that can be used to solve the problem. Allow children to choose tools. Have them choose a strategy to use to solve the problem and draw to show what they did.

Build Understanding

Kiki saw these butterflies on a bush. How many butterflies did she see?

A. What addition equation can you write?
___ + ___ = ___
What strategy did you use to find the sum?
___________
B. Change the order of the addends. How can you show a different way to solve the problem?
___ + ___ = ___
What strategy did you use?
___________
C. Kiki saw ___ butterflies.
Kiki saw 13 butterflies

Explanation:
Kiki saw 6 yellow butterflies and
7 purple butterflies
The addition equation is 6 + 7 = 13
I changed the order of the addends
7 + 6 = 13
So, Kiki saw 13 butterflies.

Turn and Talk Does it matter which of the two equations you use to solve the problem? Explain.

Step It Out

A. What is 9 + 2?
THINK: Start at 9 Count on 2.
9, ___, ____
So, 9 + 2 = ____
B. If you know 9 + 2 = 11, what other addition fact do you know?

THINK: Change the order of the addends.
___ + __ = ___
9 + 2 =
Start at 9. Count on 2
9, 10, 11
So, 9 + 2 = 11
If i know 9 + 2 = 11
Then the other addition fact is 2 + 9 = 11.

Turn and Talk Why might you want to change the order of the addends to add?

Check Understanding Math Board

Write two addition equations that can be used to solve the problem.

Question 1.
There are 5 green apples and 6 red apples in a bag. How many apples are in the bag? +

____ + ___ = ____
____ + ___ = ____
___ apples
5 + 6 = 11
6 + 5 = 11
11 apples

Explanation:
There are 5 green apples and 6 red apples in a bag
Start at 5. Count on 6
5, 6, 7, 8, 9, 10, 11
So, there are 11 apples in the bag.

Write two addition equations that can be used to solve the problem.

Question 2.
Use Repeated Reasoning Karen sees 7 red cars and 8 blue cars. How many cars does she see?

___ = ___ + ___
___ = ___ + ___
___ cars
15 = 7 + 8
15 = 8 + 7
15 cars

Explanation:
Karen sees 7 red cars and 8 blue cars
Start at 7. Count on 8
7, 8, 9, 10, 11, 12, 13, 14, 15
So, Karen sees 15 cars.

Question 3.
5 + 3 =
5 + 3 =

Explanation:
The sum of 5 and 3 is 8
5 + 3 = 8 or 3 + 5 = 8.

Question 4.
___ = 2 + 7
9 = 2 + 7

Explanation:
The sum of  2 and 7 is 9
2 + 7 = 9 or 7 + 2 = 9.

Question 5.
6 + 7 = ___