What Are Subtraction Input/Output Tables?
Subtraction tables show us how numbers change when we subtract!
These special tables have an input number (what we start with) and an output number (what we get after subtracting). By filling in the missing numbers, we can practice our subtraction skills in a fun way!
How to Solve Subtraction Tables
1️⃣ Look at the input and output numbers
2️⃣ Find the pattern (what's being subtracted?)
3️⃣ Fill in the missing numbers using subtraction
Let's Practice Together!
Example 1: Cookie Subtraction
Sam had some cookies. Each day he ate 3 cookies. Let's complete the table!
| Day | Cookies Left |
|---|---|
| Start (0) | 18 |
| Day 1 | |
| Day 2 | |
| Day 3 |
Example 2: Balloon Pop!
Lucy had balloons. The wind blew away some each hour. Can you complete the table?
| Hour | Balloons Left |
|---|---|
| Start | 15 |
| After 1 hour | 12 |
| After 2 hours | |
| After 3 hours |
Parent Tips 🌟
- Use real objects: Try this with cookies, toys, or blocks to make it hands-on!
- Make it a game: Create a "subtraction detective" game where your child solves table mysteries.
- Daily practice: Make a simple table of daily activities (like hours until bedtime) to practice regularly.