Page 89 - steps 4b 02.pdf

• Answers 4b • • • • • • • • • • • • • • • • • 8

DRM66 DRM 71
Game 1 Star has
rotational
DRM67 symmetry of
a 6cm 2 order 6.
b 4cm 2
c 2cm 2
d 6cm 2
e 2cm 2
f 4cm 2
2 a and d
band f
c and e

DRM68
1 B E 2 Open

DRM 72
1 a and b:

G

2 ABCD = 10cm 2
EFGH = 24cm 2
IJKL = 10cm 2
MNOP = 12cm 2
3 Parallelogram ABCD has the same area as IJKL
Parallelogram EFGH has double the area of MNOP.
2 and 4 Open
DRM 5q
DRM 73
1 a area= 1qcm 2
a 72 003 - 3 = 72 000
b area= 16·5cm
72 000 - 2000 = 70 000
c area= 15cm
70000 - 70000 = 0
2 area = 40·5 cm b 23 700 - 700 = 23 000
23 000 - 3000 = 20 000
3 area of square = 40·5 cm 20000- 20000 = 0
The area is unchanged. It is the same as the original
c 207 300 - 300 = 207 000
hexagon.
207 000 - 7000 = 200 000
200 000 - 200 000 = 0
DRM70
d 700 320 - 20 = 700 300
700 300 - 300 = 700 000
700 000 - 700 000 = 0
2 a 4 oqo 560 - 60 = 4 oqo 500
4 oqo 500 - 500 = 4 oqo ooo
4 oqo ooo - qo ooo = 4 ooo ooo
4 000 000 - 4 000 000 = 0
b q 406 005 - 5 = q 406 000
q 406 000 - 6000 = q 400 000
q 400 000 - 400 000 = q 000 000
q 000 000 - q 000 000 = 0

@ HarperCollinsPub/ishers Ltd 1997 STEPS 4b Differentiation Pack