Download Developmental I Review B

D EVELOPMENTAL I R EVIEW B
“Y OUR FUTURE STARTED YESTERDAY ”
1.2 ADDING
AND
SUBTRACTING
Two _______________ numbers, add them and keep the sign.
Ex. Simplify
7+5=
13 + 8 =
Two _______________ numbers, add them and keep the sign.
Ex. Simplify
-7 + (-5) =
-13 + (-8) =
_______________________, then subtract the numbers and
keep the sign of ___________________________ number.
Ex. Simplify
-7 + 5 =
13 + (-8) =
If ________________, parentheses, __________________,
change it to a big _____________________________ sign.
Ex.
-7 – (-5) =
13 - (-8) =
Homework Checklist
o Section 1.3 and 1.4 Adding and Subtracting
1 1.5 MULTIPLYING
AND
DIVIDING
Same Signs
If the signs are the _______________, the answer is positive.
Ex. Simplify
!
!
!"
!
!
!
− ∙ − =
=
Different Signs
If the signs are the ______________, the answer is negative.
Ex. Simplify
!
!
(−2.6) =
−
2.8
2=
Multiplying Decimal
When multiplying with decimals, multiply ________________.
Afterwards, ______________________________________
_______________________________________________
That is how many numbers should be behind the decimal.
Ex. Simplify
(3.3)(.02) =
(.004)(13) =
2 Dividing Decimal
1. Set up as ____________________________ problem.
2. Move the ___________ decimal to the ____________.
3. Move the ___________ decimal exactly the same.
Ex. Simplify
!.!
.!"
.!!" =
!"
=
Homework Checklist
o Section 1.5 Multiplying and Dividing
1.6 EXPONENTS
How many time do I multiply the number I see?
Ex. Rewrite
23 =
75 =
5⋅5⋅5⋅5=
If __________________ number and an _______________
exponent, my answer will be _________________________.
If __________________ number and an _______________
exponent, my answer will be _________________________.
Ex. Simplify
(-2)2 =
(-1)23 =
Where is the negative?
If the negative is ___________________ the parentheses my
number with the exponent is _________________________.
3 If the negative is ___________________ the parentheses my
number with the exponent is _________________________.
* The negative comes later in the problem, after the exponent *
Ex. Simplify
22 =
(-2)2 =
-22 =
Exponent Vocabulary
The exponent number 2, is read as _____________________.
The exponent number 3, is read as _____________________.
Any other number is read as the ______________________.
Ex. Rewrite
14 squared =
1.6 ABSOLUTE VALUE
three cubed =
AND
ORDER
OF
8 to the 7th power =
OPERATIONS
I can remember PEMDAS as: __________________________
_______________________________________________
P______________________________________________
Absolute value bars make the inside number ______________.
E______________________________________________
Radicals (__________________) are included in this category.
M_____________________________________________
D______________________________________________
A______________________________________________
S______________________________________________
4 For multiplication and division, the order doesn’t ___________.
You do whatever comes first from left to right.
For addition and subtraction, the order doesn’t ___________.
You do whatever comes first from left to right.
Ex. Simplify
!! !!! !!
!!!(!!)
=
-4 | 32 – 5 | + [ -4 +7 (2) ]
÷
| -5 | =
Homework Checklist
o Section 1.6 Order of Operations
5