Question

36cm7mm+72cm8mm+8cm2mm, find in cm

Answer 1

first sum all units of cm 36+72+8=116cm

sum of all units of mm

7mm+8mm+2mm=17mm

1cm=10mm

so, 17/10=1 cm 7mm

then sum all the cm units

36+72+8+1=117cm

so the answer is 117cm 7mm

Answer 2

Answer:

whole solution is in attachment

I hope it helps you