🎯 Subtraction with Borrowing 🎯

Let’s Learn to Subtract Double-Digit Numbers!

📖 What is Borrowing?

Sometimes when we subtract, the top number is smaller than the bottom number in the ones place. That’s when we need to borrow from the tens place! It’s like asking your friend for help when you don’t have enough. 🤝

1

Using Place Value Blocks

🍎 Example: 52 – 28 = ?

Let’s say you have 52 apples and you give 28 to your friends. How many do you have left?

Tens

5 tens

Ones

2 ones

Step 1: Look at the ones place: Can we take 8 from 2? No! We need to borrow!
Step 2: Break one ten-block into 10 ones. Now we have 4 tens and 12 ones!
Tens

4 tens

Ones

12 ones

Step 3: Now subtract! 12 – 8 = 4 ones, and 4 – 2 = 2 tens
Answer: 52 – 28 = 24 🎉

2

The Standard Way (Column Method)

🚗 Example: 43 – 17 = ?

You have 43 toy cars and you give 17 to your cousin. How many are left?

Step 1: Write the numbers one below the other, lining up the tens and ones.

43
– 17
____
Step 2: Start with the ones place. Can we take 7 from 3? No!

43
– 17
____
3 is smaller than 7 😟
Step 3: Borrow! Take 1 from the tens place (4 becomes 3) and add 10 to the ones place (3 becomes 13).

43 313
– 17
____
Step 4: Now subtract the ones: 13 – 7 = 6

43 313
– 17
____
6
Step 5: Subtract the tens: 3 – 1 = 2

43 313
– 17
____
26
Answer: 43 – 17 = 26 🎉

3

The Number Line Jump Method

🐰 Example: 35 – 18 = ?

A bunny hops backward on a number line!

Step 1: Start at 35 on the number line.
Step 2: Jump back 10 first (to make it easier): 35 – 10 = 25

35 ← ← ← ← ← ← ← ← ← ← 25
(jumped back 10)
Step 3: Jump back 8 more: 25 – 8 = 17

25 ← ← ← ← ← ← ← ← 17
(jumped back 8 more)
Answer: 35 – 18 = 17 🎉

4

The Counting Up Method

🎈 Example: 61 – 25 = ?

Instead of subtracting, we count UP from 25 to 61!

Step 1: Start at 25. Count up to the nearest ten (30).

25 + 5 = 30
Step 2: Count up by tens to get close to 61.

30 + 30 = 60
Step 3: Count up one more to reach 61.

60 + 1 = 61
Step 4: Add up all the jumps!

5 + 30 + 1 = 36
Answer: 61 – 25 = 36 🎉

💡 Super Tips and Tricks!
✨ Tip 1: The “Ten Friends” RuleWhen borrowing, remember: 1 ten = 10 ones. They’re best friends! When you borrow 1 ten, you’re really borrowing 10 ones.

✨ Tip 2: Check Your WorkAdd your answer to the number you subtracted. You should get back to where you started!
Example: 52 – 28 = 24, so 24 + 28 should equal 52! ✓

✨ Tip 3: Look Before You BorrowAlways check the ones place first. If the top number is smaller than the bottom number, you know you need to borrow!

✨ Tip 4: Use Round NumbersWhen using the counting up method, always jump to the nearest ten first. It makes counting much easier!

✨ Tip 5: Practice with Real ObjectsUse coins, toys, or candies to practice borrowing. It’s more fun and helps you understand better! 🍬

🌟 Try These Practice Problems! 🌟

54
– 27
____
72
– 38
____
41
– 19
____
65
– 28
____

Remember: You can solve these using any method you like! Choose your favorite! 😊

🎊 You’re Amazing! 🎊

Now you know FOUR different ways to subtract double-digit numbers with borrowing!
Keep practicing and you’ll become a subtraction superstar! ⭐