(6th & 7th) Expressions

Evaluation

100

2(4)

8

200

3(5)+2

17

300

-2(-8)+3

19

400

5(-4)+(-8)

-28

500

5(-9+4)-(-12)

-13

Combination

100

a+a

2a

200

b+b+b+b

4b

300

2c+5c

7c

400

5d-12d

-7d

500

15e-(-4e)+7e

26e

Simplification

100

a+a+b

2a+b

200

c+c+c+c+d+d+d

4c+3d

300

e-e+f+f+f

3f

400

5g-3g+14h-2h

2g+12h

500

6j-k+3j-5jk

9j-k-5jk

Substitution

100

6a

a=2

12

200

3b+4

b=5

19

300

10(c+5)

c=-2

30

400

6d-3d+4

d=8

28

500

7(e-4)+e

e=1

-20

Distribution

100

4(a+1)

4a+4

200

2(b+3)

2b+6

300

3(2c)

6c

400

d(3+5+7)

15d

500

-12(2e-8)

-24e+96