783 rounded to the nearest hundred

The hundreds digit is the 7.

Everything to the right of the 7 becomes zero giving you 700.

Now look at the original digit to the right of the 7 in the number 783. It is an 8. Since an 8 is greater than or equal to 5, the previous digit goes up by 1, so the 7 becomes an 8.

800

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1