Page 68 - SPARK OF MATH book 4

(4-1) Length Measuring Units.

Kilometer (km)

is a length unit used to measure very large lengths; such as lands,
streets, distance between cities and countries.

Meter (m)

is used to measure large lengths, such as rooms, heights,
playgrounds.

Centimeter (cm)
is used to measure small lengths, such as paper, book, bag, toys.

Millimeter (mm)
is used to measure very small lengths, such as insects, paper

clips, rubber.

Decimeter (dm)
is a length unit that is a tenth of a meter. Therefore, 10 dm= 1 meter

and is ten times a centimeter. Therefore 10 cm= 1 dm

1 dm

1 cm 1 decimeter is equal ro 10 centimeters

1 km= 1000 m

1 m= 10 dm

1 m= 100 cm

1 m= 1000 mm

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