Multiplying two 2-digit numbers using the formal long multiplication method with partial products.
Where your child meets this in real life: Calculating larger quantities (e.g., 24 boxes of 36 items), area calculations
SEAGReady breaks long multiplication into 3 steps, taught in order so each skill builds on the last.
Master multiply by a multiple of 10 skills
Master two partial products skills
Master partial products with carrying skills
Three free sample questions from our long multiplication course. Every question comes with a full explanation, and hints that guide without giving the answer away.
A shop in Lisburn orders 20 boxes of folders. Each box contains 32 folders. How many folders is that altogether?
Answer: A. 640 folders
Multiplying by 20 = multiplying by 2, then by 10. 32 x 2 = 64 64 x 10 = 640 The shop orders 640 folders altogether.
Stuck? Start here: Multiplying by 20 is the same as multiplying by 2, then by 10.
Emma buys 21 packets of stickers for a party. Each packet costs £13. What is the total cost?
Answer: A. £273
Split 13 into 10 + 3. 21 x 3 = 63 (partial product 1) 21 x 10 = 210 (partial product 2) 63 + 210 = 273 The total cost is £273.
Stuck? Start here: Split 13 into 10 and 3. Then multiply 21 by each part.
A hotel near the Giant's Causeway has 36 rooms. Each room has 48 towels. How many towels does the hotel have in total?
Answer: B. 1728 towels
Split 36 into 30 + 6. 48 x 6 = 288 (partial product 1) 48 x 30 = 1440 (partial product 2) 288 + 1440 = 1728 The hotel has 1728 towels in total.
Stuck? Start here: Split 36 into 30 and 6. Multiply 48 by each part.
This is the exact interactive worked example your child sees in SEAGReady. Step through it and watch the method build up.
A school orders 20 packs of exercise books. Each pack contains 34 books.
How many exercise books is that altogether?
34 × 20
Step 1 of 3
A school orders 20 packs of exercise books. Each pack contains 34 books.
How many exercise books is that altogether?
The school orders 680 exercise books altogether.
The key insight: Multiplying by 20 is just multiplying by 2 and adding a zero!
Watch out: 34 × 20 = 68. Forgetting to multiply by 10 after multiplying by 2.
These are the misconceptions we see most often in long multiplication, including the ones our practice questions are specifically designed to catch.
Struggling with long multiplication? 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.