Multiply Multiples 3

Have a go at balancing this equation. Can you find different ways of doing it?
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Multiply Multiples 3 printable sheet

In the equation below, each square represents a missing digit:

$⬜0\times⬜0=⬜0\times⬜0$

One possible solution is:

$10\times40=20\times20$

Can you work out some different ways to balance the equation?