Year 8 Algebra Revision

Adding like terms

100

10a+a

11a

200

2a+a+3a

6a

300

ab+3a

ab+3a

400

4a+2b+a+2b

5a+4b

500

2m + m + 2n 

3m +2n

Subtracting like terms

100

3s-2s

s

200

4p - p

3p

300

4b - b + 3m

3b + 3m

400

d² - d

d² - d

500

4t + t - t²

5t - t²

Multiplying with algebra

100

3a x 5

15a

200

2b x 2

4b

300

4c x 4b

16bc

400

a x a

a²

500

3a x 3a

9a²

dividing with algebra

100

4a / 2

2a

200

6n/9

2n/3

300

3m / m

3

400

4s/4s

1

500

5b²/b

5b

substitution

100

if b = 7 then b + 5 equals

13

200

If t = 5 then 2t =

10

300

If k = 8 then 2k + 1 equals

17

400

If u = 12 then 24/u equals

2

500

If p = 3 and q = 5 then 2(q - p) equals

4