Videos and songs to help Kindergarten and Grade 1 kids learn to add and subtract within 20,
demonstrating fluency for addition and subtraction within 10 by using strategies such as
counting on.

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More Lessons for Grade 1

Common Core for Grade 1

Addition Lesson 1

Count out loud and use your fingers

This method is simple and works for higher single digit numbers when the student is ready for larger numbers.

1) Identify the large number as the starting point.

2) Count the small number on your fingers to see how many to add.

3) Count up to the large number (or say the large number to yourself).

4) Count up on your fingers until you use all your fingers.

Make sure you begin on your fingers one digit AFTER you say the starting number.

Subtraction Lesson 1

Count out loud and use your fingers

1) Identify the large number as the starting point.

2) Count the small number on your fingers to see how many to subtract.

3) Say the large number to yourself (or count down from 10 until you reach the large number).

4) Continue down on your fingers until you tap all your fingers.

Make sure you begin on your fingers one digit AFTER you say the starting number.

Subtraction Lesson 3

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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