10)
[tex]10^2-48:6+25*3=100-8+75=167[/tex]
11)
[tex]8(\frac{16}{4} )+2^2-11*3=32+4-33=3[/tex]
12)
[tex](\frac{6}{3} +4)^2:4*7=(2+4)^2:4*7=6^2:4*7=36:4*7=9*7=63[/tex]
13) (your answer is incorrect)
[tex]5(9-4)^2-3^2=5*5^2-3^2=5*25-9=125-9=116[/tex]
14) (your answer is incorrect)
[tex]5^2-2^2*4^2-12=25-4*16-12=25-64-12=-51[/tex]
15)
[tex](\frac{50}{5^2} )^2:4=(\frac{50}{25} )^2:4=2^2:4=4:4=1[/tex]
16)
[tex]\frac{24+32+30+28}{2}[/tex]-expression to represent this situation
[tex]\frac{24+32+30+28}{2}=\frac{114}{2}=57[/tex]
Answer: In 1 group 57 students
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P.S. Hello from Russia :^)
