All Operations in the Order of Operations: Solving an exercise

$8\times(5\times1)=$

According to the order of operations, we first solve the expression in parentheses:

$5\times1=5$

Now we multiply:

$8\times5=40$

40

Solve the following exercise and circle the correct answer:

$5^2-4^2+2^2=$

13

Solve the following question:

$(4^2:8):2+3^2=$

10

Solve the following exercise and circle the correct answer:

$4^2:2+5^2=$

33

Solve the following question:

$(18-10)^2+3^3=$

91

Solve the following question:

$2^4-4:2^2=$

15

Solve the following question:

$3-(5^2:5)^2+7^2=$

27