Question

Add

3
-
10
+
7
-
100
and select the correct answer.
A)
16
-
30
B)
37
-
100
C)
6
-
100
D)
7
-
100

Answer 1

3/10 + 7/100 = 30/100 + 7/100 = 37/100

First convert 3/10 to 30/100 (Multiply both numerator and denominator by 10). Then add.

Answer: 37/100 (B)

Answer 2

`(3)/(10)+(7)/(100)=(3*10)/(10*10)+(7)/(100)=(30)/(100)+(7)/(100)=(30+7)/(100)=\boxed{(37)/(100)}\leftarrow answer \boxed{B}\\\\other\ method:\\\\(3)/(10)=0.3\ and\ (7)/(100)=0.07\\\\therefore\\\\(3)/(10)+(7)/(100)=0.3+0.07=0.37=\boxed{(37)/(100)}`