Add Three-Digit number by Three-Digits

2.NBT.B.7

Add and subtract within 1000, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method. Understand that in adding or subtracting three-digit numbers, one adds or subtracts hundreds and hundreds, tens and tens, ones and ones; and sometimes it is necessary to compose or decompose tens or hundreds.

Step-by-Step Videos

Add Three-Digits by multiple of one hundred

Adding Three-Digit number by Hundreds (Beginner)

Adding Three-Digit number by Hundreds (Advanced)

Add Three-Digits by Three-Digits​

Adding Three-Digit number by Three-Digits (Beginner Part 1)

Adding Three-Digit number by Three-Digits (Beginner Part 2)

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