I think this is a useful way to add things up and especially remembering to check the rough calculation to make sure the answer makes sense.
It’s much better than the expanded method and quick. It’s good 🙂 .
I agree to what William said.
Be more clear!
How can I do that? Show me what you mean.
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I think this is a useful way to add things up and especially remembering to check the rough calculation to make sure the answer makes sense.
It’s much better than the expanded method and quick. It’s good 🙂 .
I agree to what William said.
Be more clear!
How can I do that? Show me what you mean.