1.1 Number Patterns (Identity & Commutative

Properties of Addition)

1.2 Rounding

Rounding Video by Mr. DeMaio

1.3 Estimate Sums

1.5 Properties to Add

1.6 Break Apart Strategy to Add

See video with example above.

1.7 Use Place Value to Add

1.8 Estimating Differences

1.10 Use Place Value to Subtract

1.11 Combine Place Values to Subtract