1.OA.C.6

Scroll Up

- 1.OA.C.5Relate counting to addition and subtraction (e.g., by counting on 2 to add 2).
- 1.OA.C.6Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

Scroll Down

## 1.OA.C.6

## Add and subtract within 20, demonstrating fluency for addition and subtraction within 10. Use strategies such as counting on; making ten (e.g., 8 + 6 = 8 + 2 + 4 = 10 + 4 = 14); decomposing a number leading to a ten (e.g., 13 - 4 = 13 - 3 - 1 = 10 - 1 = 9); using the relationship between addition and subtraction (e.g., knowing that 8 + 4 = 12, one knows 12 - 8 = 4); and creating equivalent but easier or known sums (e.g., adding 6 + 7 by creating the known equivalent 6 + 6 + 1 = 12 + 1 = 13).

106 Lesson(s)

### 3 Addends

1st Grade Math »
Unit: Problem Solving Addition

1st Grade Math »
Unit: Problem Solving Addition

### Equal or Not?

1st Grade Math »
Unit: Understanding Equality

1st Grade Math »
Unit: Understanding Equality

### How Many Dots?

1st Grade Math »
Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less

1st Grade Math »
Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less

### Use Addition to Check Subtraction

1st Grade Math »
Unit: Single Digit Addition and Subtraction

1st Grade Math »
Unit: Single Digit Addition and Subtraction

### Adding and Subtracting Multiples of Ten

1st Grade Math »
Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less

1st Grade Math »
Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less

### Identify Related Facts - Day 1 of 2

1st Grade Math »
Unit: Single Digit Addition and Subtraction

1st Grade Math »
Unit: Single Digit Addition and Subtraction

### Explain a double

1st Grade Math »
Unit: Problem Solving Addition

1st Grade Math »
Unit: Problem Solving Addition

### Using the Number Grid to Add or Subtract Ten

1st Grade Math »
Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less

1st Grade Math »
Unit: The Ten Concept: Counting On and Off the Decade and Knowing 10 More/ 10 Less

### Addition and Subtraction Carnival

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

1st Grade Math »
Unit: Working with Numbers, Operations, and Story Problems

### Using 3 or More Addends to Make a Meal

1st Grade Math »
Unit: Problem Solving Addition

1st Grade Math »
Unit: Problem Solving Addition

### Peas and Carrots...Carrots and Peas

1st Grade Math »
Unit: Properties of Addition and Subtraction

1st Grade Math »
Unit: Properties of Addition and Subtraction

### Crayon Box Combinations

1st Grade Math »
Unit: Properties of Addition and Subtraction

1st Grade Math »
Unit: Properties of Addition and Subtraction

### Counting Back

1st Grade Math »
Unit: Single Digit Addition and Subtraction

1st Grade Math »
Unit: Single Digit Addition and Subtraction

### Doubles & Doubles +1 Practice

1st Grade Math »
Unit: Problem Solving Addition

1st Grade Math »
Unit: Problem Solving Addition

### 10 and Some More

1st Grade Math »
Unit: Complements of 10 and 20

1st Grade Math »
Unit: Complements of 10 and 20

Common Core Math

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### HS Number & Quantity

### HS Algebra

### HS Functions

### HS Geometry

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### Eighth Grade

### Ninth and Tenth Grade

### Kindergarten

### First grade

### Second grade

### Third Grade

### Fourth grade

### Fifth grade

### Middle School

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

HS Number & Quantity

HS Algebra

HS Functions

HS Geometry

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Ninth and Tenth Grade

Kindergarten

First grade

Second grade

Third Grade

Fourth grade

Fifth grade

Middle School