Adding 3-digit Numbers

Videos, stories and songs to help Grade 3 students learn how to add 3-digit numbers.

3-digit addition

Regroup ones and tens (using base 10 blocks & place value)
Example:
256 + 178 =
367 + 286 =
489 + 357 =

Multi-Digit Addition

Example:
215 + 32 =
1,850 + 354 =
145 + 809 + 77 =

• Show Step-by Step Solutions

Learn how to add 2- and 3-digit numbers.

Also learn how to check your answer using the inverse operation.
Example:
176 + 148 =
74 + 46 =
45 + 321 =

Addition with Regrouping Song

3-Digit Addition
Example:
597 + 911 =
189 + 985 =
231 + 496 =

• Show Video

Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

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