First of all, if we get the conversion between different weights and measures, the questions will often tell us the conversion ratio. For example, in question 28 on page 156 of GRE Official Guide-12th edition, the unit used in the question is inches, while the unit used in the question is kilometers, which involves the conversion between different weights and measures.

This topic is clearly written at the end (1 km is about 3.9× 104 inch. ), so you don't have to worry about this conversion, just carefully convert it according to the topic data.

Secondly, if you want to master the related topics of unit conversion in the new GRE math problem, you must master the unit conversion in the same measurement. For example, the conversion between hours-minutes-seconds is the most commonly tested. At this time, you should pay special attention to 1 hour = 60 minutes, not = 100 minutes. Students often make mistakes in doing problems.

Another GRE math problem is km–m–cm, 1km = 1 0,00000m, 1m = 100m, kg–g–mg, 1kg = 1 0,000m. For example, in February of 20 12, we got the conversion between kg and mg. The title tells us the price of a thing 1kg. Let's find out what the price of 600mg is.

At this time, we need to know 1 kg = 1 0,000 g =10,000,000 mg. In addition, because GRE is an American exam, American units of measurement are often encountered in the stem, such as feet and inches, 1 foot = 12 inch, 1 2 foot =12×12 inch 2 = 65432.

The habit of taking notes in GRE exam can also help us solve the unit conversion problem in the new GRE math preparation. When students write numbers in their notes, they should not only remember the numbers themselves, but also write down the units, so that they will immediately notice the difference between the units before and after the questions, and they will not forget the conversion because of carelessness when doing the questions.