Question

Evaluate: [(51 + 3) - 3^2] ÷ 9 • 2?

Ok so I keep getting 2.5, which I think is right, but some other answers on the internet said 10...what am I doing wrong? Here's my work below.

[(51 + 3) - 3^2] ÷ 9 • 2
54 - 3^2 ÷ 9 • 2
54 - 9 ÷ 9 • 2
54 - 9 ÷ 18
45 ÷ 18

2.5

Answer 1

Do you know the rules? The acroynm is PEMDAS
Do the operation in the Parathensis first, the exponent, then Multiply, then divide, then add then subtract

Answer 2

You should do the operations in the brackets before you divide since brackets are like parethesis.
[(51 + 3) - 3^2] ÷ 9 • 2
{54 - 3^2} ÷ 9 • 2

Answer 3

@plainntall wow! thank you so much for pointing that out! I don't know what I was thinking!! Thank you so much :)