We are given expression : 5+2x10.It can be read as 5 plus 2 times 10.Now, we need to see, what operation should carry out first.Please note: We always follow the order of operations.The order of operations could be follow by the rule PEMDAS.It stands for Parentheses, Exponents, Multiplication/Division, Addition/Subtraction.We don't have Parentheses, Exponents in the given problem.So, we would start order of operations: first multiplication and then addition.So, we need to multiply 2 × 10 first.2 × 10 = 20.Now, we need to apply addition operation.Therefore, 5+2x10 = 5+20.On adding 5 and 20, we get 25.So, the final answer is 25.