Units 1 and 2 Addition, Subtraction and Rounding

Flash Cards
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Place Value
Finding Place Value 
Expanded Form 
Specific Place Value
Place Value in Words and Numbers
Reading 3 Digit Numbers

Estimation
Round to the nearest ten 
Rounding to the nearest hundred
Rounding to the nearest thousand
Estimation contraption

Addition
Add Like Mad 
Alien Addition  
Jet Ski Addition
Tugboat Addition

Subtraction
Island Chase Subtraction
Minus Mission