Subtract two 2-digit numbers mentally when borrowing is needed.
Where your child meets this in real life: Calculating change, finding time differences, or solving word problems
SEAGReady breaks subtract 2-digit numbers (with borrow) into 2 steps, taught in order so each skill builds on the last.
Subtract 2-digit numbers mentally when the ones digit requires borrowing (e.g., 42 - 17)
Subtract from round numbers (multiples of 10) when borrowing is needed (e.g., 50 - 26)
Three free sample questions from our subtract 2-digit numbers (with borrow) course. Every question comes with a full explanation, and hints that guide without giving the answer away.
Aoife has 52 stickers. She gives 24 stickers to her friend Ciara. How many stickers does Aoife have left?
Answer: A. 28 stickers
52 - 24: Step 1: Subtract the tens first: 52 - 20 = 32 Step 2: Now subtract 4 from 32. Bridge through 30: 32 - 2 = 30, then 30 - 2 = 28 Answer: 28 stickers
Stuck? Start here: You need to find how many stickers Aoife has LEFT after giving some away. What operation is that?
Declan has 50p. He spends 23p on a lollipop at the tuck shop. How much money does he have left?
Answer: B. 27p
50 - 23: Step 1: Think of 50 as 40 + 10 (regroup to have ones to work with) Step 2: Subtract the ones: 10 - 3 = 7 Step 3: Subtract the tens: 40 - 20 = 20 Step 4: Combine: 20 + 7 = 27 Answer: 27p
Stuck? Start here: Declan SPENDS money, so he will have less. What operation do you need?
Oisin has 63 football cards. He trades 38 of them with his friend Sean. How many cards does Oisin have now?
Answer: B. 25 cards
63 - 38: Step 1: Subtract the tens first: 63 - 30 = 33 Step 2: Now subtract 8 from 33. Bridge through 30: 33 - 3 = 30, then 30 - 5 = 25 Answer: 25 cards
Stuck? Start here: Oisin is TRADING cards away, so he will have fewer. What calculation do you need?
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
Aoife has 54 stickers. She gives 27 stickers to her friend Ciaran.
How many stickers does Aoife have left?
54 − 27
Step 1 of 4
Aoife has 54 stickers. She gives 27 stickers to her friend Ciaran.
How many stickers does Aoife have left?
Aoife has 27 stickers left.
The key insight: Break the subtraction into friendly steps - subtract tens first, then ones!
Watch out: 54 − 27 = 33 (swapping digits: 7 − 4 = 3). You must subtract the bottom digit FROM the top digit, not the other way round.
These are the misconceptions we see most often in subtract 2-digit numbers (with borrow), including the ones our practice questions are specifically designed to catch.
Struggling with subtract 2-digit numbers (with borrow)? The real gap is often in one of these earlier topics.
SEAGReady finds the exact step where your child gets stuck, teaches it with worked examples like the one above, and brings it back for review so it sticks.