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Maths mistakes

I have my C2 exam tomorrow so I've been practicing a lot during the last few days. But I keep on making up numbers (like coefficients) which is causing me to get the wrong answer even though my method is usually right. When I check my answers, it's wrong (obviously) but it takes me a while to recognise that Ive made a number up. How do I stop doing this?
Reply 1
You can't really. Maybe if you went a bit slower it could help a bit but you're always prone to making mistakes. It's annoying but you probably won't lose that many marks if you accidentally change a coefficient or something like that so long as the method is correct.
More sleep.

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