Page 444 - Math Smart - 7

8. a) 6876 g b) 3
g
9. a) 5.619 t b) 0.009 t e)
10. a) < b)> c)<
11. Mass of this book - kilograms
Mass of a truck full of sand - tonnes
Mass of a packet of crisps - grams
12. Measure 6150 ml containers then measure 425 ml
containers and add them together
13. 1200 ml
14. 6.70 km
15. a) 44 mm b)45g c) 170 ml
d) 4.2 kg e) 30 ml f) 32 t
2. a
Unit 6

Recall (Pg 121)
a) 48' b)125'
Check My Understanding (Pg 122)
1. a) Reflex b) Acute c) Acute d) Reflex
e) Reflex f) Obtuse g) Reflex
2. a) reflex ... 360° b) 90° c) right
d)180° e)360° f) 90° . 180°
a) from left to (I) from right
b) from left to (IV) from right
c) from left to (V) from right
d) from left to (VI) from right
e) from left to (111) from right
f) from left to (II) from right
Recall (Pg 123)
Recall (Pg 131)
1. Students are to give a rough estimate
c/ = 52°
2. a) Acute, p = 45° < 90°
b) Right angle, q = 90°
Check My Understanding (Pg 132)
c) Obtuse, r = 118° > 90°
1. a) 90° b)44° c) 99° d) 56' e)8r
Check My Understanding (Pg 126) f) 129° 9)105 h) 72° i) 14° j) 32°
k) 60° 1)73° m) 103' n)25'
1 (I)obtuse
.
o) 45°
(II) full
Conclusion: 180
(III) right
(IV) reflex
Recall (Pg 134)
a) from left to I from right
b) from left to (I) from right a) Equilateral triangle
c) from left to (IV) from right b) Isosceles triangle
c) Scalene triangle
d) from left to (II) from right

2. a)Acute, 44° b) Acute, 67° c) Obtuse, 94' Check My Understanding (Pg 134)
a)
d) Obtuse. 172° e) Obtuse, 164° f) Reflex, 343° 1. a)60° b)130° c)40° d) 40° e)44'
g) Reflex, 268° h) Reflex, 205° f)29°, 58*
2. a) 51 b)24 c) 20 d)22.5 e)e = 40. f=55
3. a) 60° b) 50° c) 80° d) 20° 144' f) 118°
4. a) 276° b)216° c) 300° d) 340' 242' f)310' Check My Understanding (Pg 136)
1. 22
Check My Understanding (Pg 130)
2.45
1. a) b)
3. 60°
4. Angle AMB = 72°, Angle BMC = 72°, Angle CMD = 72°,
Angle AMD = 144°
Speed Challenge (Pg 137)
c)
Level 1
A. 230° B. 290° 0. 320° D. 260° E. 245° F. 305
Level 2
A. 306° B. 109° C. 53° D.309° E. 214° F. 227'
Level 3
A. 134° 8. 112° C. 175° D. 241° E. 144° F. 200'
Level 4
A. 215° B. 58° 0. 58° D.44° E. 186° F. 217'

E
Answers