Conversions of metric units of length:
1 km = 1000 m
1 m = 100 cm
1 cm = 10 mm
To convert a larger unit of length to a smaller unit of length, multiply.
To convert a smaller unit of length to a larger unit of length, divide.
To compare two different units of length, first convert them to same unit and then compare.
For example, to compare 7 cm and 80 mm, we first convert 7 cm to mm.
7 cm = 7 x 10 mm (As 1 cm = 10 mm)
= 70 mm
Now, we can compare 70 mm and 80 mm.
70 mm is shorter than 80 mm.
So, 7 cm is shorter than 80 mm.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.