If you just pull some numbers out of the air and practice with them, you'll discover
that whenever you multiply or divide a number by ten (10), you wind up with exactly
the same digits as you started with, and the only difference is that the decimal point
is moved over one place.
Knowing this trick, you should always keep it in your tool box. If you have to do
an arithmetic problem and it has a multiplication or division by 10 in it, you don't
have to go through the whole procedure. All you have to do is move the decimal
point over one place. (Of course, you also have to know which way to move it.)
-14 x 2.5 = -3514x2.5_____70+ 280_____350 Since we are multiplying by decimals we need to look at the 2.5. The decimal moves over one space, so in our answer we need to move the decimal over one place. This makes the answer 35.0. Also since we were multiplying by a (-) we need to multiply 35.0 by (-) and get -35.0.
You move the decimal 2 places over.
0.30 you move the decimal point over 2 times to the left to get the decimal. You move it over 2 times to the right to get the percent. IE. 5% = 0.05
.7 you take and move the decimal over 70 because you move the decimal over two times. 70 goes over a hundred and that is equal to 7 over 10 which is equal to .7 or you can write it as 70%. I hope this answer your question!!
Move the decimal over two places, to get: 123.5%
Yes. You first multiply, then however many decimal places you were multiplying, you move over.
move the decimal down and over however many numbers are behind the decimal
Well, honey, you move the decimal to the right when you're multiplying by powers of 10. It's as simple as that. Just count how many zeros are in the power of 10 and shift that decimal over to the right that many places. Easy peasy lemon squeezy!
To convert decimal to percent, just move the decimal place over two to the right (which is basically multiplying by 100). Therefore, 0.625 = 62.5%
33%To find this out, you do 48/144=.33333. Move the decimal over to the right twice (multiplying by 100) and you get your percentage.
-14 x 2.5 = -3514x2.5_____70+ 280_____350 Since we are multiplying by decimals we need to look at the 2.5. The decimal moves over one space, so in our answer we need to move the decimal over one place. This makes the answer 35.0. Also since we were multiplying by a (-) we need to multiply 35.0 by (-) and get -35.0.
It is: 36/100 = 0.36 as a decimal
You move the decimal point over two places because a percent means per 100 so therefore you move the decimal point over to the hundredth place
Multiplying each number by 4 gives you the (decimated) .52 answer.
You move the decimal 2 places over.
Pretend there are no decimal points, and multiply the numbers together. Then count over (from the right) the number of decimal points of the two numbers combined. For example: 3.4 * 0.185 = 0.6290 34 * 185 = 6290. There is one number to the right of the decimal point in 3.4, and three to the right in 0.185. One plus three is four, so starting from 6290. you move over four places.
to make percentages like 40% of 70 you'd change the percentage 40% to a decimal so 40% becomes .40 and you multiply (remember multiplying decimals multiply normally and when you're done move the decimal over by how many numbers are behind the decimal)answer : 2870*.40-----28.00