How do you convert 2 1/2 meters to centimeters?

2 Answers
Oct 22, 2016

Answer:

#2.5 xx 100 = 250 cm#

Explanation:

The prefix 'cent' means 100. [Century is 100 years, #100c = $1#]

In #1 " metre " # there are #100 " centimetres"#

To change metres # rarr # cm, multiply by 100.

(move the decimal point 2 places to the right)

If you change to a smaller unit, the number gets bigger.

#2 1/2 m = 2.5m" "larr# write as a decimal

#2.5 xx 100 = 250 cm#

Oct 27, 2016

Answer:

#2 1/2" metres "= 250" centimetres"#

Explanation:

Known:#" "color(brown)( 1" metre "= 100" centimetres" )#

But we need #2 1/2 # metres

Multiply both sides by #2 1/2#

#color(brown)( color(blue)( 2 1/2xx)1" metre "= color(blue)(2 1/2xx)100" centimetres" )#

#2 1/2" metres "= 250" centimetres"#