Happy Hedgehog Learning

What is the expanded method of multiplication?

Here’s a short explanation of how it works.

It’s similar in layout to the column method we are probably most familiar with. It’s a great first step to that method but helps children understand the value of each digit in the calculation, supporting understanding and mental calculation agility.

1️⃣Children start by multiplying the ones 4 x 5 =20 and writing the answer below the line.

2️⃣ Then the children move left to the 3, recognising that this is represents 30 x 5 =150, again writing the answer below the line.

3️⃣ The children then move left again to the last digit 1, which represents 100 x 5 =500, jotting this answer below the precious two.

4️⃣ The final step is to add all the answers together.

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