On a number line, Jeffrey must determine to which whole number 20−−√ is closest.
Which calculation would BEST help Jeffrey determine the approximate location of 20−−√?
Responses

20÷4=5
20÷5=420 divided by 4 is equal to 5, , 20 divided by 5 is equal to 4,

20−16=4
25−20=520 minus 16 is equal to 4, , 25 minus 20 is equal to 5,

4×4=16
4×5=204 times 4 is equal to 16, , 4 times 5 is equal to 20,

20÷4=5
36÷9=4