How do you write 2.1 thousand in scientific notation?

Answer 1

Scientific notation only contains one digit before the decimal place and the rest are decimals and then the powers of 10 multiplied to get the original number is expressed by E(power of 10).

So the only digit in front of the decimal in this case would be 2.

Thus the numeric portion of the scientific notation would be 2.31 (the trailing zeros are ignored since they are not significant figures).

But what is important is what power of 10 to multiply to get the original number. Since to move the decimal point to the new place of 2.31, it had to move to the left 6 places, thus the power is a +6.

So the scientific notation would be (put the numbers together):

2 310 000 = 2.31E6.

Lets practice with a number that's less than one.

Similar to the top number, but different order of magnitude.

0.000 000 231

Numeric component is the same: 2.31

But to get the decimal to its right place it had to shifted to the right 7 places, thus the power of ten is a -7.

Put it together:

0.000 000 231 = 2.31E-7.

Easy right?

Answer 2

2.1 thousan = 2,100 = 2.1 x 10^)3)

Answer 3

2.1 times 10 to the third power.