Question

Use the order of operations to evaluate the expression below:

3+6.4−80=10+4−18
A) 7.4
B) -66.6
C) 19
D) -71.6

Answer 1

To evaluate the expression 3+6.4-80, follow the order of operations: addition and subtraction. The value of the expression is -70.6.

Step-by-step explanation:

To evaluate the expression 3+6.4-80, we need to follow the order of operations, also known as PEMDAS. This stands for Parentheses, Exponents, Multiplication and Division (from left to right), and Addition and Subtraction (from left to right).

In this expression, there are no parentheses or exponents, so we move to multiplication and division. There are no multiplication or division operations, so we move to addition and subtraction.

Starting from the left, we have 3+6.4-80. We first add 3 and 6.4, which equals 9.4. Then, we subtract 80 from 9.4, which gives us -70.6.

Therefore, the value of the expression 3+6.4-80 is -70.6.