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Conversion of Capacity

Example 6: Convert the following.

( a) 2455 mL into L and mL (b) 140 dL into daL and dL
Solution: ( a) 2455 mL into L and mL L dL cL mL

2455 mL = 2000 mL + 455 mL
= (2000 ÷ 1000) L + 455 mL ÷ 10 ÷ 10 ÷ 10
= 2 L 455 mL

( b) 140 dL into daL and dL daL L dL

140 dL = 100 dL + 40 dL
÷ 10 ÷ 10
= (100 ÷ 100) daL + 40 dL = 1 daL 40 dL

Think Tank Logical Thinking
Measure the heights of your family members in cm using a measuring tape and
convert them into: (a) mm (b) m

ConvERSIon of MEASURIng UnITS USIng A DoUBLE nUMBER LInE

Conversion of Length

Example 1: Complete the double number line given below using conversion.

100 cm × 3 ____ cm 700 cm 900 cm 1300 cm

× 100

1 m 3 m ____ m ____ m ____ m
× 3
100 cm × 3 300 cm 700 cm 900 cm 1300 cm

Solution: × 100

1 m 3 m 7 m 9 m 13 m
× 3
Conversion of Weight

Example 2: Complete the double number line given below using conversion.

1,000 g × __ ____ g ____ g 11,000 g ____ g 19,000 g ____ g

× 1000

1 kg 3 kg 7 kg ____ kg 15 kg ____ kg 23 kg
× 3
1,000 g × 3 3,000 g 7,000 g 11,000 g 15,000 g 19,000 g 23,000 g

Solution: × 1000

1 kg × 3 3 kg 7 kg 11 kg 15 kg 19 kg 23 kg

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