Any punctuation/writing errors? and why?
Solving Math problems is complicated, but you will get used to it after a while. You have to practise; practise makes perfect. Make sure that you do 10 - 12 math problems per day. Once you get used to common problems, move on to more complicated problems. For instance, if you get used to simple factoring, you can move onto complex factoring.
I confused about this one.
Solving Math problems is complicated
or
Solving Math problems are complicated
Solving Math problems is complicated. Running a 4-minute mile is challenging. Getting stuck in traffic jams is no fun.
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Solving Math problems is complicated.
Running a 4-minute mile is challenging.
Getting stuck in traffic jams is no fun.
Threading needles takes good eyesight.
Loving your neighbor as yourself is a good commandment.
Signalling before you make a turn is good advice.
Rule: When a Verb+ing form is used as a subject in