Add within 20

Want Full Access? Join The Many Satisfied MathTA Users!

SIGN UP TODAY

OR

LOGIN

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).

Adding By 1

Practice Adding by 1

START

Adding By 9

Practice Adding by 9

START

Adding By 2

Practice Adding by 2

START

Adding By 8

Practice Adding by 8

START

Adding By 3

Practice Adding by 3

START

Adding By 7

Practice Adding by 7

START

Adding By 4

Practice Adding by 4

START

Adding By 5

Practice Adding by 5

START

Adding By 6

Practice Adding by 6

START

Step-by-Step Presentations

Adding by 1 (Right Side)

Adding by 1 (Both Sides)

Step-by-Step Videos

Adding By 1 (Intro)

Adding By 1 (Beginner Level)

Adding By 1 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 9 (Right Side)

Adding by 9 (Both Sides)

Step-by-Step Videos

Adding By 9 (Intro)

Adding By 9 (Beginner Level)

Adding By 9 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 2 (Right Side)

Adding by 2 (Both Sides)

Step-by-Step Videos

Adding By 2 (Intro)

Adding By 2 (Beginner Level)

Adding By 2 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 8 (Right Side)

Adding by 8 (Both Sides)

Step-by-Step Videos

Adding By 8 (Intro)

Adding By 8 (Beginner Level)

Adding By 8 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 3 (Right Side)

Adding by 3 (Both Sides)

Step-by-Step Videos

Adding By 3 (Intro)

Adding By 3 (Beginner Level)

Adding By 3 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 7 (Right Side)

Adding by 7 (Both Sides)

Step-by-Step Videos

Adding By 7 (Intro)

Adding By 7 (Beginner Level)

Adding By 7 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 4 (Right Side)

Adding by 4 (Both Sides)

Step-by-Step Videos

Adding By 4 (Intro)

Adding By 4 (Beginner Level)

Adding By 4 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 5 (Right Side)

Adding by 5 (Both Sides)

Step-by-Step Videos

Adding By 5 (Intro)

Adding By 5 (Beginner Level)

Adding By 5 (Advanced Level)

Home

Step-by-Step Presentations

Adding by 6 (Right Side)

Adding by 6 (Both Sides)

Step-by-Step Videos

Adding By 6 (Intro)

Adding By 6 (Beginner Level)

Adding By 6 (Advanced Level)

Home

Basic Math Facts Menu

1st Grade Menu

Math Fundamentals Menu

See All Math Fundamental Skills

ENTER NOW

Additional Grade Levels:

2nd Grade Menu

3rd Grade Menu