[tex]Zad. 2\\
\\
a) \\
0.5+\frac23=\frac12+\frac23=\frac36+\frac46=\frac76=1\frac16\\\\
2.5*2\frac27=2\frac12*2\frac27=\frac52*\frac{16}7=\frac51*\frac87=\frac{40}7=5\frac57\\
\\
1.8-1\frac23=1\frac4{5}-1\frac23=1\frac{12}{15}-1\frac{10}{15}=1\frac2{15}\\
\\
2\frac14:0.3=\frac94:\frac3{10}=\frac94*\frac{10}3=\frac32*\frac{5}1=\frac{15}2=7\frac12[/tex]
[tex]b)\\
4.25+1\frac34=4.25+1.75=6\\
\\
3.6*\frac35=3.6*0.6=2.16\\
\\
6.5-3\frac12=6.5-3.5=3\\
\\
2\frac14:0.3=2.25:0.3=22.5:3=7.5[/tex]
Tabelka:
[tex]2m+8m=10m\\
1\frac12o+2o=3\frac12o\\
\frac14s+1s=1\frac14s\\
3b+5b=8b[/tex]