Use factoring of 10, 100, and 1000 and the multiplication properties to multiply large numbers. Factor out 10,100, or 1000 and then group the single digit numbers together and the powers of 10 together. Rearranging the factors allows you to multiply quick
A. Factor out 10, 100, or 1,000 from a given number
B. Solve multiplication problems using the associative and commutative properties
C. Solve a multi-digit multiplication problem using factoring out and properties of multiplication (Level 1)
D. Solve a multi-digit multiplication problem mentally
F. Round multi-digit numbers to estimate the area of a rectangle
G. Round multi-digit numbers to estimate the product