Place Values + Rounding
This is the first place after the decimal point.
Tenth
"2 - 7"
-5
The three types of fractions.
Proper, Improper, and Mixed
These sets of operations can be done from left to right because they are "opposite operations".
Division and Multiplication
Addition and Subtraction
3x + 2, if x = 1.
5
This rule dictates whether a number is rounded up or down.
Five or above, round up. Four or below, round down.
"6 - (-7)" is the same as "6 + (this number)"
+7
13/7 as a mixed fraction.
1 6/7
(1+2)2
9
X, if 3x - 4 = 8
4
67,524.987 rounded to the nearest hundred.
67,500
"5 / -1"
-5
The lowest common denominator for 4/5 and 3/3.
15
3 + 4 x 6 / 2
15
This word tool can be used backward when rearranging equations.
BEDMAS
All numbers to the left of the rounded place value remain the same unless you are rounding up this number.
9
When multiplying or dividing integers, this rule tells you if your answer will be negative or positive.
2 negatives make a positive.
OR
Even # of negatives --> positive answer
Odd # of negatives --> negative answer
(4/5) / (2/5)
2
(3 - 2)2 / (3 - 22)
-1
m, if 2(m - 2) = -8
-2
100,000 is 123,546.789 rounded to this place value.
Hundred thousand
927+(-926)
1
(1/3) + (3/5)
14/15
16x + 12 - 16x / 1
12
a, if a / (3 + 2) = 10
50