What Does It Mean to Subtract?
Subtraction is like taking away things from a group.
When we subtract a one-digit number (like 3 or 7) from a two-digit number (like 12 or 15), we're finding out how much is left after we take away the smaller number. It's like having some cookies and eating a few - we want to know how many are left!
How to Subtract Step by Step
1️⃣ Start with the bigger number (the two-digit number up to 18)
2️⃣ Take away the smaller number (the one-digit number)
3️⃣ Count what's left - that's your answer!
Let's Practice Together!
Example 1: 14 - 5 = ?
Let's use a number line to help:
101112131415161718
Start at 14. Jump back 5 spaces. Where do you land?
Example 2: 17 - 8 = ?
Let's use counters to help visualize:
Imagine you have 17 apples (draw them or use real objects if you can!)
🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎🍎
Now take away 8 apples. How many are left?
Parent Tips 🌟
- Use real objects: Have your child subtract with small toys, snacks, or coins to make it tangible and fun.
- Make it a game: Play "store" where prices are two-digit numbers and "pay" with one-digit numbers to find the change.
- Practice daily: Incorporate quick subtraction questions into daily routines like setting the table or counting stairs.