To solve the expression 5 plus 1 x 10, we need to remember the order of operations, often abbreviated as PEMDAS (Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right)).
According to this rule, we perform multiplication before addition. In our case, we will first calculate 1 x 10, which equals 10.
Now we can rewrite the problem: 5 + 10.
Finally, we add 5 and 10 together to get 15.
So, 5 plus 1 x 10 equals 15.