For the first part of #2 it's mas, and in the second part of number two it's menos.
There are siete grises
Cinco Blancos
Hay menos blancos
Hay mas grises
Mi maestra es SIMPÁTICA she’s only one and a girl so yea
If it has a correct gender specific noun. If its singular or plural. Irregular verbs. The fact there is two different verbs. Past tense or current. Verb of change. Spanish prepositions. Direct and indirect pronouns. The word gustar.
The cake is really sweet: el pastel es muy dulce
la comida es riquísima: the food is delicious
la sopa is calentísima: the soup is very hot
