Question

Goran found three pieces of wire in his tool drawer. Here are their lengths (in centimeters).

6, 7.91, 17.2
What is the total length of the three pieces?
centimeters
X
S

Answer 1

31.11 cm

Explanation:

we are asked to add the numbers together. we can express the numbers as decimals to the hundredths place to make it easier.

6.00 + 7.91 + 17.20

first, add the first two together.

6.00 + 7.91 = 13.91

next, we separate the decimals and add the whole digits separately:

13.91 + 17.20 = 13 + 17 + 0.91 + 0.20

= 30 + 1.11

the 1 is carried up:

= 31.11 is our final value.