Cześć!
Od a) do f)
[tex]6 \ cm \ 5 \ mm=6\cdot10 \ mm+5 \ mm=60 \ mm+5 \ mm=\boxed{65 \ mm}\\\\4 \ dm \ 6 \ cm=4\cdot10 \ cm+6 \ cm=40 \ cm+6 \ cm=\boxed{46 \ cm}\\\\5 \ m \ 78 \ cm=5\cdot100 \ cm+78 \ cm=500 \ cm+78 \ cm=\boxed{578 \ cm}\\\\40 \ m \ 9 \ cm=40\cdot100 \ cm+9 \ cm=4000 \ cm+9 \ cm=\boxed{4009 \ cm}\\\\3 \ km \ 45 \ m=3\cdot1000 \ m+45 \ m=3000 \ m+45 \ m=\boxed{3045 \ m}[/tex]
Od g) do l)
[tex]74 \ mm=70 \ mm+4 \ mm=\boxed7 \ cm \ \boxed4 \ mm\\\\87 \ cm=80 \ cm+7 \ cm=\boxed8 \ dm \ \boxed7 \ cm\\\\136 \ cm=100 \ cm+36 \ cm=\boxed1 \ m \ \boxed{36} \ cm\\\\342 \ cm=300 \ cm+42 \ cm=\boxed3 \ m \ \boxed{42} \ cm\\\\4056 \ m=4000 \ m+56 \ m=\boxed4 \ km \ \boxed{56} \ m\\\\40 \ 300 \ m=40 \ 000 \ m+300 \ m=\boxed{40} \ km \ \boxed{300} \ m[/tex]
