Calculate the sum on the left side of the equation: 4 + 9 = 13 .
Rewrite the equation as 13 = … + 3 .
Subtract 3 from both sides to find the missing number: 13 − 3 = 10 .
The number that should go in the blank space is 10 .
Explanation
Understanding the Problem Let's analyze the given equation: 4 + 9 = … + 3 . Our goal is to find the number that should replace the blank space to make this equation true.
Calculating the Left Side First, let's calculate the sum on the left side of the equation: 4 + 9 = 13 .
Isolating the Unknown Now, let's rewrite the equation with the sum calculated: 13 = … + 3 . To find the number that goes in the blank space, we need to subtract 3 from 13.
Finding the Missing Number So, the number in the blank space is 13 − 3 = 10 . Therefore, the complete equation is 4 + 9 = 10 + 3 .
Examples
Imagine you're sharing candies with a friend. You have 4 candies and your mom gives you 9 more. Now you want to give some candies to your friend so that you have only 3 left. This problem helps you figure out how many candies you need to give to your friend. Understanding basic equations is useful in everyday situations like sharing, budgeting, and cooking.