Kopfrechnen

\[15*10=\]

\[3547-231-368=\]

\[42:6=\]

\[400:5:4=\]

\[64:4=\]

\[\sqrt{81}=\]

\[295+247-361=\]

\[60:15=\]

\[\frac{1}{4}*\frac{12}{3}=\]

\[12*13=\]

\[23*51=\]

\[14*12-15=\]

\[56-28=\]

\[6587-24-85+51=\]

\[0,25+\frac{1}{4}=\]

\[15*11-63+52=\]

\[7*8=\]

\[40*30=\]

\[2347-479-23=\]

\[35:5=\]

\[4619+193-348=\]

\[13*21=\]

\[\sqrt{121}=\]

\[5^3=\]

\[(5+3)^2-10=\]

\[174-14-98=\]

\[\sqrt{36}=\]

\[57+14+36=\]

\[7*13-90+1\frac{2}{4}=\]

\[57*7=\]

\[44+17+88=\]

\[721-47+98=\]

\[21^2=\]

\[80*2,5=\]

\[105:7=\]

\[79-35+88=\]

\[7*31-30=\]

\[9*1*5*3=\]

\[24*24=\]

\[8+13+64=\]

\[88+44=\]

\[8*14-23=\]

\[609+87+398+24=\]