1)one balloon-four balloons.
2)one tree -two trees.
3)one cat-three cats.
4)one frog-two frogs.
5)one bird - four birds.
6)one star-three stars.
7)one book -two books.
8)one cowe- five cows
9)one chair-four chairs.
10)one rabbit-three rabbits.
11)one doll-two dolls.
12)one ball-five balls.
13)one mouse -five mice
14)one baby - two babies.
15)one boxe-four boxes.
16)one leaf-six leaves.
17)one brush-four brushes.
18)one knife-two knives.
19)one glass-three glasses.
20)one bus-four busses.
1)one balloon-four balloons.
2)one tree -two trees.
3)one cat-three cats.
4)one frog-two frogs.
5)one bird - four birds.
6)one star-three stars.
7)one book -two books.
8)one cowe- five cows
9)one chair-four chairs.
10)one rabbit-three rabbits.
11)one doll-two dolls.
12)one ball-five balls.
13)one mouse -five mice
14)one baby - two babies.
15)one boxe-four boxes.
16)one leaf-six leaves.
17)one brush-four brushes.
18)one knife-two knives.
19)one glass-three glasses.
20)one bus-four busses.