2.NBT.6 Add up to four two-digit numbers using strategies based on place value strategies and properties of operations.
Mental Math Warm-Up Add Be prepared to share your strategy for how you solved it.
Math Strategies Which two numbers would you add first?
Math Strategies Which two numbers would you add first ?
4 two-digit addition Which two numbers would you add first?
4 two-digit addition Add
MP 3 Critique the Reasoning of Others My cousin Linda solved an addition problem. Does Linda have the correct answer? = 135