Final answer:
The algebraic expression 'x + 1' represents having one more ball than is on the playground.
Step-by-step explanation:
The algebraic expression for 'one more ball than is on the playground' can be written as x + 1, where x represents the number of balls on the playground. Adding 1 to x represents the concept of having one more ball than the original count on the playground. For example, if there are initially 5 balls on the playground, the expression becomes 5 + 1 = 6, indicating that there are now 6 balls in total.
Learn more about Algebraic expressions for counting objects