Kopfrechnen 2

\[\sqrt{81}=\]

\[40*30=\]

\[105:7=\]

\[\sqrt{36}=\]

\[3547-231-368=\]

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

\[60:15=\]

\[15*10=\]

\[8+13+64=\]

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

\[7*8=\]

\[295+247-361=\]

\[5^3=\]

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

\[88+44=\]

\[400:5:4=\]

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

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

\[8*14-23=\]

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

\[64:4=\]

\[174-14-98=\]