Out of 20 kids in a 4th grade class, 1 4 are girls. - how many girls are in this class? - how many boys are there? - what part of all students are boys?

-5 girls

-15 boys

Step-by-step explanation:

for girls it's 1/4=5/20 so 4x5=20 and 1x5=5

for boys you would subtract the total number, 20, by the number of girls there,(20-5) leaving us with

Then for third question, it's

idk

step-by-step explanation:

-362

step-by-step explanation:

(12)(4)+2(12)-34(12)+2(12)-3

  \/         \/         \/         \/

  48 +   24 -   408 + 24 - 3

      \   /               \   /

          72     -     432 - 3 = -363