Understanding Sums and Differences
Numbers can be friends that work together in special ways!
Sometimes we need to find two numbers that add up to a certain total (sum), or two numbers where one minus the other gives a specific result (difference). This skill helps with mental math and solving real-world problems!
How to Find Number Pairs
1️⃣ For sums: Think of number bonds that make your target
2️⃣ For differences: Imagine moving up or down a number line
3️⃣ Check your answer: Always add or subtract to verify
Let's Practice Together!
Example 1: Find two numbers that add up to 15
Click two numbers below that add up to 15:
5
7
8
10
12
3
Your selection: None yet
Example 2: Find two numbers with a difference of 4
Click two numbers below where the bigger minus the smaller equals 4:
9
5
7
11
2
6
Your selection: None yet
Parent Tips 🌟
- Play store: Give your child pretend money and ask them to choose items that add up to a certain amount or calculate change.
- Use dice: Roll two dice and have your child quickly say what they add up to or the difference between them.
- Number line hop: Create a number line on the floor and have your child physically hop to demonstrate sums and differences.