Well, when you get the answer to a multiplication problem, you divide your answer to check it, so just do that with the decimals that you multiplied.
For Example:
2 x 3 = 6
6 is your answer, so, do this problem to check it:
6 / 3 = 2
Answer: 62°
Step-by-step explanation:
Total angle in a triangle = 180°
40° + 78° + < N = 180°
118° + <N =180
<N = 180 -118
<N=62°
Answer: 7+0.7+0.05
Since 7 is in the ones place it goes in front of the decimal. .7 is in the tenth place because it's behind the decimal. .05 is also behind the decimal so it's in the hundredths place.
Since 6 = F it would be 6(5.3) - 6×5.3 which is 31.8