Answer :

summergirl7987
thats easy for example the first question 3.2*2.8*6.1=?
first multiply 3.2*2.8 which equals 8.96 then multiply that number times 6.1 so like this-> 8.96*6.1 which your answer is 54.656.
So answers for numbers 1-3 are
1) 54.656
2) 90
3) 15.603
enjoy!