All the solutions provided in **McGraw Hill My Math Grade 2 Answer Key PDF Chapter 1 Apply Addition and Subtraction Concepts** will give you a clear idea of the concepts.

## McGraw-Hill My Math Grade 2 Answer Key Chapter 1 Apply Addition and Subtraction Concepts

**Essential Question?**

What strategies can I use to add and subtract?

Answer:

Rearranging tens and ones

number line.

Doubles.

**Am I Ready?**

**Add.**

Question 1.

____ bananas

Answer:

4 + 2 = 6

Explanation:

The sum of 4 and 2 is 6

There are 4 bananas 2 bananas joined them

so, there are 6 bananas in all.

Subtract.

Question 2.

9 – 7 = ____

Answer:

9 – 7 = 2

Explanation:

The difference of 9 and 7 is 2

9 – 7 = 2

**Look at the picture. Write the number sentence.**

**Add.**

Question 3.

Answer:

Explanation:

There are 3 green apples and 1 red apple

3 + 1 = 4

so, there are 4 apples in all.

Question 4.

Christy put 6 marbles in a group. 2 marbles rolled away. How many marbles are left?

_____ marbles

Answer:

4 marbles.

Explanation:

Christy put 6 marbles in a group.

2 marbles rolled away.

6 – 2 = 4

4 marbles are left.

**My Math Words**

**Review Vocabulary**

minus sign (-) plus sign (+)

**Write the word addition or subtraction in the center. Then use a review vocabulary word to describe your word.**

Explanation:

**My Vocabulary Cards**

**Teacher Directions:**

**Ideas for Use**

- Ask students to arrange cards to show an opposite pair. Have them explain the meaning of their paring.
- Write a tally mark on each card every time you read the word in this chapter or use it in your writing. Try to use at least 10 tally marks for each word card.

Any numbers being added together.

On a number line, start at the greater addend and move forward by the other addend.

Answer:

Started from 4

Two addends that are the same.

Answer: 4 + 4 = 8

To join together sets to find the total or sum. The opposite of subtract.

Answer:

8 – 4 = 4

On a number line, start at the greater number and move back by the other number.

Answer: started from 8

counted back to 4

The answer to a subtraction problem.

Answer:

8 – 4= 4

**My Vocabulary Cards**

**Teacher Directions:**

**More ideas for Use**

- Create riddles for each word. Have students guess the word for each riddle.
- Have students draw examples for each card. Hove them make drawings that are different from what is shown on each card.

The missing number in a number sentence that makes the number sentence true.

Answer:

Addend.

Basic facts using the same number. Sometimes called a fact family.

Answer:

4 + 4 = 8

The answer to an addition problem.

Answer:

Sum

Addition and subtraction sentences that use the same numbers.

Answer:

4 + 4 = 8

8 – 4 = 4

Addition facts in which one addend is exactly 1 more or 1 less than the other addend.

Answer:

6 + 5 = 11

11 – 6 = 5

Take away, take apart, separate, or find the difference between two sets. The opposite of add.

**My Foldable **

**Foldables Follow the steps on the back to make your Foldable.**

Explanation:

**Foldables**

**Study organizer**

Explanation:

The addition of two addends gives the sum.