Solve '20-0÷4×3+1': Order of Operations Practice

Let's simplify this expression while following the order of operations which states that exponents come before multiplication and division, which come before addition and subtraction, and that parentheses take priority over all.

According to the above order of operations, multiplication and division come before addition and subtraction, so we'll start by calculating the value of the second term from the left in the expression. Then we'll perform the addition and subtraction operations.

Since there is no precedence between multiplication and division, we'll perform the division and multiplication operation from left to right:

$20-0:4\cdot3+1= \\ 20-0\cdot3+1=\\ 20-0+1=\\ 21$

In the first stage, we recalled how dividing 0 by any number (other than zero) will always yield the result 0. Then we remembered that multiplying 0 by any number will always yield the result 0.

Therefore, the correct answer is answer B.