Question

WILL FAN AND MEDAL!!!!!!
Ming made a triangular picture frame out of cardboard. The sides of the frame are 6.75 in., 6.75 in., and 8.375 in. Ming uses the addition below to determine the amount of string she needs to decorate the edges of the frame.

Answer 1

http://media.education2020.com/evresources/3106-03-02/mc012-1.jpg

Answer 2

Which explains Ming’s error?
She should have included the decimal in 6.75 and aligned the decimal points to add 6.750 + 6.750 + 8.375 = 21.875.

She forgot to put the decimal point in two of the numbers: 0.675 + 0.675 + 8.375 = 9.725.

She added 6.75 twice, and she should have only added it once: 6.75 + 8.375 = 15.125.

She should have placed a zero placeholder after the decimal point to add 6.075 + 6.075 + 8.375 = 20.525.

Answer 3

The mistake is where she should have added 6.75 + 6.75 + 8.375. When your adding decimal numbers together, you have to add accordingly.

Answer 4

which one? @jkl5149

Answer 5

she forgot the decimal in 6.75

Answer 6

so b?

Answer 7

ya

Answer 8

no a

Answer 9

???????????

Answer 10

the first one
because it should be 6.75 not 675
and it should be aligned like this
6.75
6.75
8.375

Answer 11

oh sorry lol yes its a

Answer 12

ya

Answer 13

-.-

Answer 14

it is

Answer 15

@THE_FRITO_BANDITO just look at what I said

Answer 16

somebosy medal @Griffindore

Answer 17

and @Mehek14 lol

Answer 18

thanks

Answer 19

@Griffindore give @Mehek14 a medal

Answer 20

V
-.-

Answer 21

give her one,

Answer 22

on her comment