This document appears to be notes from a math lesson on solving equations by multiplying or dividing decimals. It includes examples of equations, instructions to round numbers to certain decimal places, and a word problem about Babe Ruth's baseball stats in 1923 to find the number of hits using a batting average formula. The homework assigned is problems 1-9 and 12-21 on page 154.

1. 3.6 mult divide decimal equations October 11, 2011
Round each number to the underlined place value.
1. 15.6571
2. 0.8914
3. 7,022.56
4. 345.678
Bellwork
Objective ­ solve equations by multiplying or dividing decimals.
HW pg. 154 #1­9, 12­21 1

2. 3.6 mult divide decimal equations October 11, 2011
300 = ­15j 4k = 96
k = ­ 20 ­4 = w
­9 6
HW pg. 154 #1­9, 12­21 2

3. 3.6 mult divide decimal equations October 11, 2011
0.9r = ­5.4 1.15 = 2.3x
HW pg. 154 #1­9, 12­21 3

4. 3.6 mult divide decimal equations October 11, 2011
m r = 0.5
= 12.5
­7.2 ­6.0
HW pg. 154 #1­9, 12­21 4

5. 3.6 mult divide decimal equations October 11, 2011
The 1923 baseball season was one of Babe Ruth's best.
He was at bat 522 times and had a batting average of 0.393.
The batting average formula is a = h/n, where a is the batting average,
h is the number of hits, and n is the number of times at bat.
Use the formula to find the number of hits Babe Ruth made.
HW pg. 154 #1­9, 12­21 5

6. 3.6 mult divide decimal equations October 11, 2011
hw pg 154
# 1 ‐ 9, 12 ‐ 21 all
HW pg. 154 #1­9, 12­21 6