# 2nd grade

Duck Duck Moose is now part of Khan Academy! Download their 21 award-winning apps for young children at duckduckmoose.com

### Staff picks

### Get Started

Hundreds

Learn to see three-digit numbers as hundreds, tens, and ones

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# 2nd grade

### Staff picks

### Get Started

Duck Duck Moose is now part of Khan Academy! Download their 21 award-winning apps for young children at duckduckmoose.com

Hundreds

Learn to see three-digit numbers as hundreds, tens, and ones

Start learning