Vocab & Sign Rules
Mult & Div: The answer will be _____________ when the 2 numbers have DIFFERENT SIGNS.
NEGATIVE
2 x (-2) = ?
-4
-15 ÷ (-5) = ?
3
What number shows withdrawing $120 ?
-120
-10xx(-0.5)=?
5
Mult & Div: The answer will be _____________ when the 2 numbers have the SAME SIGNS.
POSITIVE
-5 x 6 = ?
-30
-27 ÷ 3 = ?
-9
What number shows ascending 212 feet?
212
Use the Multiplicative Inverse
div5/6
xx6/5
These numbers belong to this category.
-12, -5, -2, 0, 6, 13, 240
INTEGERS
-8 x (-3) = ?
24
60 ÷ (-12) = ?
-5
What is the change in elevation (meter per sec) for a drone that descends 32 meters in 8 seconds?
-4 meters per second
What is the error?
-2xx8xx(-1/2)=-8
Should be a POSITIVE answer
These numbers belong to this category.
-32.75, -22, -1/2, 0, 3/5, 1.48, 56
RATIONAL NUMBERS
2/9 xx 5/2 = ?
5/9
1/7 ÷ (-6/7) = ?
-1/6
What is the total change to her account after 5 months, if Ms. Chavez spends exactly $25 each month at Starbucks?
-$125
-10xx1/4xx1.6
-4
An equation that only contains numbers.
A NUMBER SENTENCE
-42 xx 1/6
-7
-5/8 ÷ (-10/12) = ?
3/4
The space station travels 51,450 miles in 3 hours as it orbits the earth. Write the NUMBER SENTENCE to find it's speed (mph).
51450 ÷ 3 = 17150
0.4xx(-14)xx10div(-2/3)
84