Metric Subtraction DrillOnline version Quick practice with metric units by Arnab Biswas 1 Subtract 24 cm from 2 m. a 170 cm b 180 cm c 176 cm d 160 cm 2 Subtract 15 mm from 3 cm. a 10 mm b 15 mm c 20 mm d 25 mm 3 Subtract 7 m from 12 m. a 5 m b 4 m c 7 m d 6 m 4 Subtract 120 cm from 2 m. a 80 cm b 70 cm c 90 cm d 60 cm 5 Subtract 25 cm from 1 m. a 90 cm b 75 cm c 50 cm d 60 cm 6 Subtract 3 km from 5 km. a 2 km b 1 km c 3 km d 4 km 7 Subtract 450 mm from 2 m. a 1700 mm b 1550 mm c 1400 mm d 1500 mm 8 Subtract 30 cm from 2 m. a 160 cm b 170 cm c 150 cm d 180 cm 9 Subtract 4 cm from 1 m. a 96 cm b 90 cm c 100 cm d 94 cm 10 Subtract 8 m from 12 m. a 5 m b 3 m c 4 m d 6 m