standard and non standard units of measurment

which one is Non-standard unit of measurement?

• centimeter

• meter

• hand span

• Non standard units

• standard units

• standard units

• non standard units

• 2

• 4

• 5

• 2

• 3

• 1

• 5

• 4

• 3

1KM=______________meter

• 100

• 1000

• 10

1meter=______________Cm

• 100

• 10

• 1000

1Cm=______________mm

• 10

• 100

• 1000

1meter=________________mm

• 100

• 1000

• 10