(i) 12 kilometer
To convert kilometer into meter multiply by 1000.
Therefore 12 km = 12 × 1000 = 12000 meter
(ii) 10 1/2 kilometer
To convert kilometer into meter, multiply by 1000
Therefore 10 1/2 km = 10 km + 1/2 km
= 10 x 1000 meter + 1/2 x 1000 meter
= 10000 + 500 meter = 10500 meter
(iii) 25 1/4 meter
To convert meter into centimeter multiply by 100.
Therefore 25 1/4 meter
= 25 meter + 1/4 meter
= 25 x 100 cm + 1/4 x 100 cm
= 2500 cm + 25 cm
= 2525 cm.
(iv) 15 3/4 meter
To convert meter into centimeter multiply by 100
Therefore meter 15 3/4 cm. = 15 meter + 3/4 meter
= 15 x 100 cm. + 3/4 x 100 cm.
= 1500 cm. + 3 x 25 cm.
= 1500 cm. + 75 cm.
= 1575 cm.
(v) 4 1/5 cm.
To convert centimeter into millimeter multiply by 10.
Therefore 4 1/5 cm.
= 4 cm. + 1/5 cm.
= 4 x 10 mm. + 1/5 x 10 mm.
= 40 mm. + 2 mm.
= 42 mm.
(vi) 1 4/5 cm.
To convert centimeter into millimeter multiply by 10.
Therefore 1 4/5 cm. = 1 cm. + 4/5 cm
= 1 x 10 mm. + 4/5 x 10 mm.
= 10 mm. + 4 x 2 mm.
= 10 mm. + 8 mm
= 18 mm.
