# 2nd- Operations and Algebraic Thinking

**English**

**Math**>

**Algebra**

**7 - 8**

**2nd- Operations and Algebraic Thinking**

Represent and solve problems involving

addition and subtraction.

• Add and subtract within 20.

• Work with equal groups of objects to gain

foundations for multiplication

Mathematical Practices

1. Make sense of problems and persevere in

solving them.

2. Reason abstractly and quantitatively.

3. Construct viable arguments and critique

the reasoning of others.

4. Model with mathematics.

5. Use appropriate tools strategically.

6. Attend to precision.

7. Look for and make use of structure.

8. Look for and express regularity in repeated

reasoning.

**What is the missing number in the pattern: 2, 4, _, 8, 10?**

3

6

5

7

**Which operation is used to find the total amount when you add two numbers together?**

Subtraction

Multiplication

Addition

Division

**What is the result of 5 + 3?**

7

8

9

6

**If you have 3 groups of 2 apples, how many apples do you have in total?**

4

5

6

3

**What is the missing number in the pattern: 10, 12, _, 16, 18?**

13

14

15

17

**Which operation is used to find the difference between two numbers?**

Addition

Subtraction

Multiplication

Division

**What is the result of 4 + 2?**

6

7

8

5

**If you have 2 groups of 4 apples, how many apples do you have in total?**

5

6

7

8

**What is the missing number in the pattern: 3, 6, _, 12, 15?**

8

9

10

11

**Which operation is used to find the total number of items when you multiply two numbers together?**

Addition

Subtraction

Multiplication

Division