What is 2×(5-1) ×2?

Answer 1

PEMDAS is a mnemonic device that helps to remember how to apply the order of operations when solving items involving different operations.

Step 1: Parentheses

Step 2: Exponents

Step 3: Multiplication, Division (left to right)

Step 4: Addition, Subtraction (left to right)

Step 1: (5-1) = 4

2*4*2

Step 2: there are no exponents, go to step 3

Step 3: 2*4 = 8 and 8*2= 16

Answer 2

Follow order of operations: parentheses; exponents; multiplication & division; addition & subtraction.

2 x (5 - 1) x 2

We have things in parentheses, so we solve that first: 5 - 1 = 4.

2 x 4 x 2

All we have left is multiplication, so we multiply straight across, from left to right: 2 x 4 = 8.

8 x 2 = 16.