Estimate the quotient of a multi-digit division problem. Round both the divisor and the dividend to their left-most places. Use powers of 10 to simplify the problem. Divide the rounded value to find the approximate quotient
A. Divide round numbers by powers of 10
B. Divide by factoring out powers of 10 from the divisor
C. Divide multi-digit round numbers mentally
D. List the multiples of a given 2-digit round number
E. Round a 3-digit number to the nearest multiple of a given 2-digit round number (Level 1)
F. Round a 3-digit number to the nearest multiple of a given 2-digit round number (Level 2)
G. Estimate a quotient by finding the nearest multiple
I. Estimate a quotient of a multi-digit division equation (Level 2)