Adding Rational Numbers
Simplify:
4.5+(-4.5)
4.5+(-4.5)=0
6-6
6+-6=0
Simplify:
4x-2
4x-2=-8
Evaluate:
65/-5
65/-5=-13
Arianna runs up 4.5 flights of stairs. How far will Arianna have to run down to represent an additive inverse?
4.5 Flights Down
Simplify:
-4+(-6)
-4+(-6)= -10
Show Keep-Change-Change, then evaluate:
47-(-38)=
47+38=85
Evaluate
-3x-10
-3x-10=30
Evaluate:
4,592/-82
4,592/-82=-56
Four out of nine dogs weigh less than 20 pounds. What is the decimal equivalent for the number of dogs weighing under 20 pounds?
.4 (4 is repeating)
Evaluate:
3.1+(-6.3)
3.1+(-6.3)= -3.2
Show Keep-Change-Change, then solve:
-13.6-(-24.32)=
-13.6+24.32=10.72
Evaluate:
3.5x(-1.2)
3.5x(-1.2)=-4.2
Simplify:
-17.5 / -.07
-17.5 / -.07= 250
In the first round of a card game, Niki scored 20 points. Then, she lost 10 points on one turn and also lost 25 points on her final turn. What is Niki's final score?
-15 points
Evaluate:
30 1/2 + ( -120 1/4)
30 1/2 + (-120 1/4)=-89 3/4
Show Keep-Change-Change, then simplify
-4 1/2 - 2 3/4
-4 1/2 + (-2 3/4)=-7 1/4
Evaluate and simplify if needed.
-2 2/3 x -4 3/7
-8/3 x -31/7= 248/21 = 11 17/21
Divide:
(8/9) by -1 4/15
and simplify if needed
-40/57
A marathon is 26.2 miles long. There is a water station every 1 1/4 miles along the race route and at the finish line. How many water stations are needed for this marathon?
21 water stations
Evaluate:
20.25+(-9 1/2)+11
20.25+(-9 1/2)+11=21 3/4 or 21.75
Show Keep-Change-Change, then evaluate:
-24 1/2 - (-16.15) - 4
-24 1/2 + 16.15 + (-4)= -12.35
Evaluate:
-10.50 x 5/6
-10.50 x 5/6= -8.75
Divide:
-3.6 by 2 1/7
And simplify if needed
-1 17/25
Javier had $305 in his bank account. His bank charges a fee of $7.50 each month that a balance is below $500. If he makes no other deposits or withdrawals, how much money is in Javier’s account at the end of three months?
$282.50