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Here are some careless mistakes that I've made in my most recent math test.

1) In an integration problem, there were 2 parts. We had to find a reduction formula in the first part and apply it in the second part.

Part a )

I

_{n}= (c-b

^{2})......

I

_{n}= (c-b

^{2})......

I

_{n}= (c+b

^{2})......

I

_{n}= (c+b

^{2})......

part b) I used a wrong reduction formula deduced in part a

=5 marks disappeared

2) 0/(1+1) = 0/1 = 1 mark was lost

3) another integration problem, to integrate a rational function and I applied partial fraction.

1/(x

^{3}+8)

= 1/([x+2][x

^{2}-2x+4])

= 1/([x+2][x

^{2}+2x+4])

= I lost another 5 marks

more than 20% of the marks were lost due to careless mistakes !

I made lots of careless mistakes in many other tests too.