How to do complicated calculations on the GC section?

[Teeth12345]

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Hey guys,
I just finished my first TopScore test...depressing. I got a 16 on the GenChem section...I've been getting 21's and 22's on Kaplan and I've been doing relatively well on Destroyer so I have no idea where this score came from. Then I looked back and realized I missed about 3 questions just because of math error.

I really don't want to miss questions bc of math errors. I'm ok with small numbers and estimating, but sometimes estimating isn't smart because the answer choices are really close to each other in value. Do you guys have any tips?

For example, this is one of the problems I got wrong. It's #60 on the first test. How would you go about simplifying

6 x (1/10) x (373/283)

to 0.79. Keep in mind that the other choices are 0.40. 0.69, 0.72, and 0.87

Thank you!!!

 

[dentalWorks]

Hey guys,
I just finished my first TopScore test...depressing. I got a 16 on the GenChem section...I've been getting 21's and 22's on Kaplan and I've been doing relatively well on Destroyer so I have no idea where this score came from. Then I looked back and realized I missed about 3 questions just because of math error.

I really don't want to miss questions bc of math errors. I'm ok with small numbers and estimating, but sometimes estimating isn't smart because the answer choices are really close to each other in value. Do you guys have any tips?

For example, this is one of the problems I got wrong. It's #60 on the first test. How would you go about simplifying

6 x (1/10) x (373/283)

to 0.79. Keep in mind that the other choices are 0.40. 0.69, 0.72, and 0.87

Thank you!!!

if this was the real DAT.... strong chances are, one of the answer choices will be "6 x (1/10) x (373/283)" and not 0.79

I took the dat a little over 1.5 years ago but If I remember correctly, all my GC problems that required calculations were set-ups (like above).

And to answer your original question...
you can approximate that thing to
6 X (1/10) X (400/300) = 6/10 X 4/3 = 24 / 30 = 0.80

 

[FLOSS UR TEETH]

that's a good question.

I would do 6/10 x 4/3 (round the 373/283 to 400/300) which is 24/30 or about .8