Poziom C
[tex]a) \frac45*\frac{15}{16}=\frac{1}{1}*\frac{3}{4}=\frac34\\\\
b) \frac9{10}*\frac23=\frac{3}{5}*\frac{1}{1}=\frac35\\\\
c) \frac5{12}*\frac45=\frac{1}{3}*\frac{1}{1}=\frac13\\
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d) \frac58*\frac4{45}=\frac{1}{2}*\frac{1}{9}=\frac1{18}\\
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e) \frac67*\frac{21}{16}=\frac{3}{1}*\frac{3}{8}=\frac98=1\frac18\\
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f)\\
\frac3{20}*\frac4{15}=\frac{1}{5}*\frac{1}{5}=\frac1{25}\\
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g)\\
\frac35*\frac{20}{27}=\frac{1}{1}*\frac{4}{9}=\frac49\\
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h) \\
\frac{22}{50}*\frac{10}{11}=\frac{2}{5}*\frac{1}{1}=\frac25[/tex]
Poziom D
[tex]a) 2\frac13*1\frac15=\frac73*\frac65=\frac71*\frac25=\frac{14}5=2\frac45\\
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b) 1\frac45*3\frac13=\frac95*\frac{10}3=\frac31*\frac21=3*2=6\\
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c) 5\frac13*1\frac18=\frac{16}3*\frac98=\frac21*\frac31=2*3=6\\
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d) 3\frac3{10}*1\frac4{11}=\frac{33}{10}*\frac{15}{11}=\frac32*\frac31=\frac92=4\frac12\\
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e) 2\frac67*1\frac1{10}=\frac{20}7*\frac{11}{10}=\frac27*\frac{11}1=\frac{22}7=3\frac17\\
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[/tex]
[tex]f) 2\frac45*1\frac{17}{28}=\frac{14}5*\frac{45}{28}=\frac{1}{1}*\frac{9}{2}=\frac92=4\frac12\\
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g) 3\frac35*7\frac12=\frac{18}5*\frac{15}2=\frac91*\frac31=27\\
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h) 1\frac57*4\frac23=\frac{12}7*\frac{14}3=\frac41*\frac21=8[/tex]
Mistrz
[tex]a) \frac{13}{18}*\frac{36}{65}=\frac11*\frac25=\frac25\\\\
b) 7\frac15*\frac{25}{78}=\frac{36}5*\frac{25}{78}=\frac{6}{1}*\frac{5}{13}=\frac{30}{13}=2\frac4{13}\\
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c) 24\frac35*\frac{15}{246}=\frac{123}5*\frac{15}{246}=\frac{1}{1}*\frac{3}{2}=\frac32=1\frac12\\
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d) 11\frac1{10}*\frac1{37}=\frac{111}{10}*\frac1{37}=\frac{3}{10}*\frac11=\frac3{10}[/tex]
