Page 124 - Math Skill - 5

122 Maths

Solution: (a) 55 cm into m (b) 25 mg into g

1 m = 100 cm 1
1 1 mg = 1000 g
or 1 cm = m.
100 25
55 Thus, 25 mg = g = 0.025 g
Thus, 55 cm = m = 0.55 m 1000
100
Fact-o-meter
(c) 4.15 m into mm (d) 60 mL into L � Gallon = 3.78 litres
1 m = 1000 mm 1 mL = 1 L � 1 mile = 1.609 km

Thus, 4.15 m = (4.15 × 1000) mm 1000 60

= 4150 mm Thus, 60 mL = 1000 L = 006L. .

Exercise 9.1

1. Convert the following as directed.
(a) 6 mm = ________ cm (b) 60 cm = ________ m (c) 85 mm = ________ m
(d) 8 mL = ________ L (e) 4.5 g = ________ kg (f) 19 g = ________ kg
(g) 350 mL = ________ L (h) 90 m = ________ km

2. Convert the following.
(a) 349 cm into m (b) 3.6 m into mm (c) 2351 g into kg
(d) 70.4 mL into L (e) 20.19 kg into g (f) 13.07 km into m

(g) 87 m into km (h) 3460 mL into L (i) 96 mm into cm
3. Convert the following.
(a) 4 kg 210 g = _____ kg (b) 2 km 500 m = _____ km (c) 6L 60 mL = _____ L

(d) 5 m 10 cm = _____ m (e) 8 kg 60 g = _____ kg (f) 12 L 200 mL = _____ L

4. Put >, < or = in the boxes:

(a) 7200 g 7 kg 20 g (b) 12 kg 100 g 12.01 kg

(c) 660 m 6.6 km (d) 5.6 L 5 L 60 mL

(e) 6 L 100 mL 6.1 L (f) 4.5 km 4 km 50 m

5. Complete the following.

(a) 2 kL = ____________ hL = ____________ daL = ____________ L
(b) 7000 g = ____________ dag = ____________ hg = ____________ kg

(c) 4 g = ____________ dg = ____________ cg = ____________ mg
(d) 3 L = ____________ dL = ____________ cL = ____________ mL
(e) 6 km = ____________ hm = ____________ dam = ____________ m
(f) 5000 m = ____________ dam = ____________ hm = ____________ km