Math Review

Integers

100

-290+360

70

200

(-3)(-4)

12

300

(-20)/5

-4

400

-3(2)+4-8(2)

-6+4-16 =-2-16 =-18

500

(9-3)+5(4)-10

=6+20-10 =26-10 =16

Substitution

100

m+2 for m=4

4+2 =6

200

x-5 for x=-2

-2-5 =-7

300

t(6)+4 for t=3

=3(6)+4 =18+4 =22

400

(77/w) +3 for w=11

=(77/11)+3 =7+3 =10

500

2(8+y) - 5 for y=2

=2(8+2)-5 =2(10)-5 =20-5 =15

Solving Equalities

100

x+9 = 12

x=12-9 x=3

200

y-5=-7

y=-7+5 y=-2

300

5h=20

h=20/5 h=4

400

2y+4=8

2y=8-4 2y=4 y=4/2 y=2

500

y/60=2

y=60*2 y=120

Solving Inequalities

100

54+x≥60

x ≥ 6

200

67+x≤43

x ≤ -24

300

3w≤9

w≤3

400

-2y+3>15

y<-6

500

y/-5>10

y<-50

Exponents

100

2^3x2^7

2^10

200

3^4 x 3^8

3^12

300

9^5 / 9^3

9^2

400

7^6 / 7^8

7^-2 =1/7^2

500

8^7 / 8^4

8^3