karta

/karta/

Cases

SingularPluralWhen to use it
nominativekartathe mapkartalathe mapsthe plain dictionary form — the doer of the sentence
genitivekartanıthe map'skartalanıthe maps'the owner — whose it is
accusativekartanıthe map (as the object)kartalanıthe maps (as the object)a specific, known object — whom or what
dativekartağato the mapkartalağato the mapsdirection or recipient — to where, to whom
locativekartadaat / in the mapkartaladaat / in the mapswhere it is; also having — mende bar, "I have it"
ablativekartadanfrom the mapkartaladanfrom the mapswhere it comes from; also "than" when comparing
When to use each case
nominative
the plain dictionary form — the doer of the sentence
genitive
the owner — whose it is
accusative
a specific, known object — whom or what
dative
direction or recipient — to where, to whom
locative
where it is; also having — mende bar, "I have it"
ablative
where it comes from; also "than" when comparing

The endings are the same ones the pronouns wear — that page explains when each case is used.

With an owner

One ownedSeveral owned
mykartammy mapkartalarımmy maps
yourkartangyour mapkartalarıngyour maps
his / herkartasıhis / her mapkartalarıhis / her maps
ourkartabızour mapkartalarıbızour maps
you all'skartağızyou all's mapkartalarığızyou all's maps
theirkartalarıtheir mapkartalarıtheir maps

The overlap in the last rows is real, not a mistake: kartaları can mean "his / her maps", "their map", or "their maps" — context decides.