Sum of Ages: David and Lisa

easyGrade 2-4sum of-ages

The Problem

David is 15 years old and Lisa is 14 years old. What is the sum of their ages?

Answer:

29 years

Key Information

  • David's age: 15 years
  • Lisa's age: 14 years

Step-by-Step Solution

1

Identify both ages

David = 15 years, Lisa = 14 years
2

Set up equation

Sum = David's age + Lisa's age
3

Substitute values

Sum = 15 + 14
4

Calculate

15 + 14 = 29
5

Final answer

The sum of their ages is 29 years

Common Mistakes to Avoid

  • Adding wrong numbers
  • Missing one of the ages

Helpful Tips

  • Write down both ages before adding
  • Check your addition twice

Real-World Application

Adding ages is common when calculating combined ages for tickets, events, or family statistics.

Related Topics:

ageadditionsumword problems

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