Whisper the numbers in standard form and unit form 42

In standard form 42=

In unit form, 42 as 4 tens 2 ones

Step-by-step explanation:

Standard form: It is the way of writing down the numbers easily in a very large or small numbers.

Rules for  writing a number in standard form is that first you write down a number between 1 and 10, then multiply the number with 10(to the power of a number).

Now, to write

42 in standard form: .

Unit form: it  is a form that express the number by giving the number of place value within the number.

Unit form of 42:

42 is written as  4 tens , 2 ones.

the largest number of the four options is 1.8 x 10-2

you have it in scientific notation.

1.80 x 10-6   = 0.00000180

1.80 x 10-4   = 0.000180 (bigger, or "less small", than the former one)

so

1.8 x 10-2       = 0.0180. as you see. the "less small", or the biggest one of them all.

as you have negative exponent, it means you are dividing 1.8 by 100 (i.e. moving the dot towards left, two times).

if you had positive exponent for the scientific notation, power of tenths, you would be multiplying times 100 (moving the dot towards right) as below:

1.8 x (10)2 = 180

so. if you have negative exponent in scientific notation, move the dot toward left. if it is positive, toward right as many times the exponent tells you.