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If you are studying for the math part of the incoming Armed Services website vocational Aptitude Battery, or ASVAB test, you will probably face many calculations at first glance seem to require either a calculator (which is not allowed) or long handwritten form calculations to get the answer. My goal is to show you not only how to simplify the mathematical process, but also to show you some mathematical tricks. In particular, this article will focus on multiplying numbers that end in zero
If you are facing the ASVAB style question asks you to multiply two medium or large numbers, such as 22 times 37, you can find yourself spending too much time with a pen and paper. If instead you simplify the numbers to the point where your calculations are significantly shorter, you will find that you have more time to complete both Mathematics Knowledge (MK) and numbers reasoning (MR) parts
Check out the latest problem sample exam practice you and answer choices. Look at the answer choices given. The figures provided is not so close to each other to perfectly accurate calculation is required. Instead, the numbers will be far apart that even with some rounding and evaluation answer will still be close enough to just one of the answer choices.
With the above example, instead of calculating 22 times 37 the long way we can round each number to the nearest unit 10. Since 22 is very close to 20 to round it down. And 37 is very close to 40, so we round it up.
Now we have a new example reads 20 times 40. Once again you have a chance to figure out this long way, which will still be more or you can take this one step further and actually do the math the head
How?
is not the number 20 actually just 2 times 10? And is not the number 40 really only 4 times 10? If we think of two digit numbers that end in zero as the number times 10, we can simply get these problems requires a calculator, that does not even have a pen and paper
instead of 20 times 40 we have now trouble les 2 times 10 times 10 4 times multiplication allows us to rearrange the order of the numbers, so let’s look at this example 2 times 4 times 10 times 10
Is not everything one look so much simpler? 2 times 4 is 8, and 10 times 10 is 100 That leaves 8 times 100 is 800
Actual answer for 22 times 37 is very near 814th Since the ASVAB will not give you a choice of close to real In response, 800 will still be the closest value. Was it worth doing all that extra math for differences 14?
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