Order of operations - Wikipedia, the free encyclopedia
The standard order of operations, or precedence, is expressed in the following chart.
#1 terms inside brackets
#2 exponents and roots
#3 multiplication and division
#4 addition and subtraction
a
16 ÷ 2[8 – 3(4 – 2)] + 1
Apply #1
16 ÷ 2[8 – 3(2)] + 1
16 ÷ 2[8 – 3 x 2] + 1
#3 within the square brackets
16 ÷ 2[8 – 6] + 1
#1
16 ÷ 2[2] + 1
16 ÷ 2 x 2 + 1
Rule 2
8 x2+1
#3
16 +1
#4
17
So it is 17 after all.
48 ÷ 2(9+3)
Rule 1
48 ÷ 2(12)
48 ÷ 2x 12
Rule 3
24 x12
288