First of all, a meter is equal to 100cm.
\(1m=100cm\)
Seb made a jump of two and a half meters. (\(2 \frac{1}{2}\) or \(2.5\))
Multiply 100 by 2.
\(100*2=200\)
Now we need the half.
What is half of 100?
50 is half of 100.
So, add 50 to the 200.
\(200+50=250\)
Kirsty's jump was 10 centimeters longer.
Add 10 centimeters to the 250 centimeters.
\(250+10=260\)
Kirsty's jump was 260 centimeters high, or 2.55 meters.
