Question

A plank of wood is 4.6 meters long.

These two lengths of wood are cut from the plank - 88cm and 1630mm

What is the length of the wood left

Answer 1

Explanation:

1 meter = 100 centimeter = 1000 millimeter

therefore, 1 cm = 10 mm

4.6 m = 4.6 × 1000 = 4600 mm

88 cm = 880 mm

and so, they cut off

880 mm + 1630 mm = 2510 mm

that means

4600 - 2510 = 2090 mm = 2.09 m

are left.