Write an ordered list of five numbers whose values are between 50.98 and 51.6. tell whether your list is from least to greatest or greatest to least.

One possible answer is:

51.0, 51.1, 51.2, 5.13, and 51.4; the list is from least to greatest.

Explanation:

51.0 can be written as 51.00.  Comparing this to 50.98, we can see that 51.00 is larger.

51.1 is larger than 51.0; 51.2 is larger than 51.1; 51.3 is larger than 51.2; and 51.4 is larger than 51.3.  All of these numbers are also smaller than 51.6.

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.