Multi-step problems are math problems that require you to use more than one operation (such as addition and subtraction) to solve. These problems may involve multiple steps where you need to solve part of the problem first before moving on to the next part. In these problems, you will often need to break down the question into smaller steps, solve them one by one, and then combine the results to get the final answer.

To solve multi-step problems:

• Read the problem carefully and identify what needs to be done in each step.
• Perform the operations one at a time, starting with the first step.
• Keep track of your intermediate results and use them in the next step.

Examples:

Example 1:
Problem: Sarah has 45 apples. She buys 38 more apples from the store. Then, she gives 20 apples to her friend. How many apples does Sarah have now?
Solution:

        Step 1: Add the apples Sarah bought to her original amount: 
        45 + 38 = 83 apples.
        
        Step 2: Subtract the apples Sarah gave to her friend:
        83 - 20 = 63 apples.
    

Example 2:
Problem: Mark has 150 marbles. He gives 45 marbles to his sister and 30 marbles to his friend. How many marbles does he have left?
Solution:

        Step 1: Subtract the marbles Mark gave to his sister:
        150 - 45 = 105 marbles.
        
        Step 2: Subtract the marbles Mark gave to his friend:
        105 - 30 = 75 marbles.
    

Multi-step problems help you practice using different operations and working through a series of calculations to find the final answer. They can be fun and challenging as you improve your problem-solving skills!

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