Exponents (Part 2)
Week 14
DO NOW (3 mins)
PKB (Prior Knowledge Box)
Topic: Exponents
Rules
Complete this side
only. List
anything that you
know about the
above topic.
Misconceptions
STANDARD
7NS 2.3 Multiply, divide
and simplify rational
numbers by using
exponent rules.
OBJECTIVE
Huskies will be able to
predict which exponent
rules to use based on the
given exponent expression.
Exponent Rule #1
When multiplying, If the
bases are the same, add
the exponents together.
Example#1
2 ´2
3
4
Example#1-answer
2 ´2
3
3+ 4 = 7
7
2
128
4
The base, 2, is the
same. So we add
the exponents
YouTry#1
2 ´2
3
2
Exponent Rule #2
The power tells you how
many times to multiply the
base.
Example #2
2
4
Example# 2- answer
( 2)
4
2 ´ 2 ´ 2 ´ 2=16
YouTry#2
2
(
)
4
3
Exponent Rule #3
When dividing, If the
bases are the same,
subtract the
exponents.
Example#3
4
5
2
5
Example#3-answer
4
5
2
5
4-2 = 2
52
5´ 5 = 25
YouTry#3
4
5
2
5
4-2 = 2
52
5´ 5 = 25
Exponent Rule #4
The fourth law of exponents states that for every integer x,
(ab)x = ax bx
Example:
(4  3)3 = 43  33 = 64  27 = 1,728
Exponent Rule #5
The fifth law of exponents states that for every integer x,
æ aö a
ç ÷ = x
è bø b
x
x
Example:
æ2ö 2
4
ç ÷ = 2 =
è3ø 3 9
2
2
Prior Knowledge Box (PKB)
Topic: Exponents
Misconceptions
What did you think you
knew but you found out
was a misconception? If
you didn’t have any prior
knowledge, what did you
learn/ review today?
Agenda
Homework-Exponent Rule Worksheet
Fill out Exponent Rule table and do the “you try”
column.
Due on Thursday (p1 and p5) Due on Friday (p2,4,6)
Bring a white board marker
(DUE: P.1,3,5- Mondays and Thursday. P.2,4,6Tuesdays and Fridays)