Year 8 Maths Revision

Expanding (A)

100

8(a+5) 

8a+40

200

9(-a + 4)

-9a+36

300

-4(a+6)

-4a-24

400

2a(a+4)

2a²+8a

500

-6a(5a-7)

-30a²+42a

Expanding (B)

100

(a+1)(a+3)

a²+4a+3

200

(t+3)(t-2)

t²+t-6

300

(v-4)(v-5)

v²-9v+20

400

(2a+1)(a+2)

2a²+5a+2

500

(4g+2)(2g-3)

8g²-8g-6

Factorising

100

2k+8

2(k+4)

200

15-3k

3(5-k)

300

2d²+6

2(d²+3)

400

10ac-15ab

5a(2c-3b)

500

4k²+14k

2k(2k+7)

Solve linear equations (A)

100

x + 10 = 18

x=8

200

x-15=30

x=45

300

x/5 =12

x=60

400

2(x+3)=20

x=7

500

x/3 - 2 =7

x=27

Solve linear equations (B)

100

2x+1=5

x=2

200

-4 + x = 5

x=9

300

3d+4=-11

d=-5

400

4(10-a)=24

a=4

500

5(a-2)=a+2

a=3