1. Lesson 0.4­0.5.notebook March 31, 2014
Assignment:
1­­>L0.4, pg. P16, #3­39 (every 3rd)
& L0.5, pg. P19, #3­42 (every 3rd)
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2. Lesson 0.4­0.5.notebook March 31, 2014
Lesson 0.4­0.5 Warm­Up:
No calculator!!
1) Julie answered 21 out of 25 questions correctly, what percent
did she answer correctly?
2) Compare: 7/20 2/5
3) What is the reciprocal of 4/11?
4) Convert 2 3/5 to an improper fraction.
5) Convert 37/4 to a mixed number.

3. Lesson 0.4­0.5.notebook March 31, 2014
Lessons 0.4­0.5:
REMEMBER:
Rules for adding signed numbers:
signs same: ADD use the same sign
signs different: SUBTRACT use the sign of the larger
Rule for subtracting signed numbers:
ADD the OPPOSITE use the rules for adding

4. Lesson 0.4­0.5.notebook March 31, 2014
Examples:
No Calculator.
Add or subtract:
A) 25 + (­16)
B) ­57 ­ 34
C) ­33.7 ­ (­24.2)
D) ­1/2 + 4/5
E) ­7/8 ­ (­3/16)

5. Lesson 0.4­0.5.notebook March 31, 2014
and...REMEMBER:
Rules for multiplying or dividing signed numbers:
signs same: MULTIPLY or DIVIDE solution is POSITIVE
signs different: MULTIPLY or DIVIDE solution is NEGATIVE

6. Lesson 0.4­0.5.notebook March 31, 2014
More Examples:
No calculator.
Multiply or divide:
F) ­78 (­1.3)
G) (­1/3)(­7 1/2)
H) 11/12 (­1 1/5)