This bundle includes:
Using using addition charts to recognize patterns
Identity Property of Addition
Commutative Property of Addition
Rounding to the Nearest ten
Rounding to the Nearest Hundred
Using Number lines to Round
A Rounding Poem and Examples of Rounding page
Estimating Sums
Mental Math Strategies (using "jumps" on a number line to find sums)
Using Associative Property to add
Break Apart Strategy to Add
Estimating Differences
Mental Math Strategies for Subtraction (Count up by tens th