Adding, Subtracting and Multiplying Rule A: + and -
Rule B: x
Line up decimal points and then
The number of decimal digits in
put a decimal point in the answer
the product (answer) equals the
directly below the decimal points
total number of decimal digits in
in the problem.
the factors.
Each addition, subtraction and multiplication problem on this page has been
done for you -- almost. Your job is to put the decimal point in the answer.
First look and see which rule you should use.
Then put the decimal point
where it belongs.
B
Rule
Rule
Rule
Rule
Rule
3.82 6 48 .126 4.83
28.2
+1.93
3 X 9
X
-.50
6
5.75
1.944 1134 433 1563 1692
Rule
-
41
1
25
.837
+.726
Х
Rule
Rule
Rule
Rule
Rule
Rule