Solve multistep word problems posed with whole numbers and having whole-number answers using the four operations, including problems in which remainders must be interpreted. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

How Do You Estimate a Multiplication Problem by Rounding?

Many real world math problems can be solved mentally. In this tutorial, you'll see how to estimate the answer to a word problem by multiplying mentally!
How Do You Figure Out What a Remainder Means When You're Dividing?

Division can help you solve all kinds of everyday problems! Just check out this tutorial involving sharing animal crackers!