88.8 cm + 71 mm

Question

88.8 cm + 71 mm

skullpatrol · Answer

"c" stands for "centi" $$=10^{-2}$$ "m" stands for "milli" $$10^{-3}$$

skullpatrol · Answer

@_gabitha_  does that help?

dan815 · Answer

very good explaination

dan815 · Answer

they shud just stop using centi and milli just start using 10^x

dan815 · Answer

i used to hate when i saw nano and giga and mega and angstrom all at once

anonymous · Answer

@skullpatrol. Well, this is a question from an assignment named "adding and subtracting measurements"  Some options are 
A)95.9 cm
    B)95.18 cm
   C) 79.88 cm
   D) 159.8 cm

skullpatrol · Answer

That helps, because all the measurements are in "cm".

anonymous · Answer

@skullpatrol . okkkkk :)

dan815 · Answer

gabita 10 mm = 1 centimeter right so if u have 77 mm how many centimeter is that

anonymous · Answer

770? @dan815

dan815 · Answer

always remember than when you are adding numbers your units have to be the same so if you want to add 77mm to 88.8 cm then you need to put them in the same cm and since your answer is in cm, you want to convert everything into cm

dan815 · Answer

10mm = 1 cm 
77mm = 7.7 cm

dan815 · Answer

does that make sense

dan815 · Answer

like lets say 5 fingers make up 1 hand

dan815 · Answer

if 5 fingers make up 1 hand then how many fingers make up 2 hands?
5 Fingers = 1 hand
__ Fingers = 2 hands

anonymous · Answer

10

dan815 · Answer

right
 just like that if 
10 mm = 1 cm
77 mm =  __ cm

anonymous · Answer

7cm. (rounded)

dan815 · Answer

yep 7.7 cm to be exact but you are getting the jist of it

anonymous · Answer

thank you!

dan815 · Answer

so now you can add 
88.8 cm +7.7 cm =

dan815 · Answer

one more thing
 have you learnt algebra yet?

dan815 · Answer

like solving for X or anything like that

anonymous · Answer

@dan815 . yeah, this is a review before the state exams and I just need to refresh my mind on some things.

dan815 · Answer

oh btw your question is 71mm so thats 7.1 cm so you want to add 88.8cm + 7.1 cm

dan815 · Answer

oh okay then remember this method to solve for these things
10 mm = 1 cm
77 mm = x cm
so you want to cross multiply 
x * 10 = 1* 77 
x =  1 * 77  / 10 
x = 7.7

anonymous · Answer

@dan815  95.8cm.... right?

dan815 · Answer

yes

dan815 · Answer

remember that cross multiplication method its very important