Page 453 - Math Smart - 7

3. a) i) 10km 2. a) 7 b)17 C)1
ii) Refer to part'd' 3. a) 13 b)-2 c) -3
iii) Refer to part'd' 4. a) 60 b)30
b) Refer to part'd' 5. a) 80 Baht b)180 Baht
c) Refer to part'd' c) 2.50 Euros d) 5 Euros
d) 6. a) 15, 20, 25
Beth's journey
b)
1 Liana's wages
1
25
20
-
-
-
« 10 w 10
-

2 3
X ^ 1
!
Time (h)
1 in-^ft i 1n-- n 11:n 1 11 30 1
Time (h) 7. a)
a) 100 km, refer to part 'di' for graph
b) 1) 50 km
e) 20 km
11) 150 km
f) 11:34
iii) refer to part 'di'
iv) refer to part 'di'
Revision (Pg 264)
c) refer to part 'di'
d) i)
Pate! family's journey
/\
200
/ \
/ \
4 -i - 0
-
150
b) Rectangle
S 100

5 -4 - 5 - I - 0

Quadrilateral Time (h)
J k
ii) 50 km/h

Unit 12
- 5 -4 -5 - > - 5 0
Recall (Pg 269)
1. a) 52% b) 36%
2. a) 70% b) 68% 0) 25.5%
3. a) 55.6% b) 53.3% c) 67.2%
d) Trapezium
Check My Understanding (Pg 271)
1. a) 20% b)25% c) 50% d) 75%
\ 2. 13%
3. 30%
4. 75%

Check My Understanding (Pg 272)
1. al 29 c)
100
• 5 -t -5 -I -1 0
'"'is f A