Which one of the models is correct?

it would be the one on the left top corner

Step-by-step explanation:

with 1/3 × 1/6, you would multiply the top two numbers which is 1×1=1. then you will multiply the bottom two, which is 3×6=18 which gives you 1/18ths

16.9 times 2.85

step-by-step explanation:

a

step-by-step explanation:

when a number is between two straight lines it means the absolute value.

to find absolute value you need to know how many numbers is that number away from 0.

when finding absolute value the number will always come out positive

so absolute value of -3 is 3

absolute value of 3/2 is 3/2

absolute value of -2 is 2

absolute value of 3.5 is 3.5

absolute value of -1 is 1

now put these numbers in order:

a)   |-1|, |3/2|, |-2|, |-3|, |3.5|