adding
10+5
15
7-5
2
I have no sides and no corners
There are 2 balls in the ball tub. Mrs. Golden adds 4 more balls. How many balls are there in the tub now?
2+4=6
7+8
15
10-5
5
I have 3 sides and 3 corners
Triangle
You earned 5 marbles for being quiet in library. You earned 7 more marbles getting a compliment from Ms. Schreiber. How many marbles did you earn all together?
5+7=12
9+9
18
15-4
11
I have 4 sides and 4 corners that are all the same size. I look like a present.
square
You bring 10 cookies for lunch. You eat 3 cookies. How many do you have left?
10-3=7
20+5
25
20-7
13
trapezoid
6-3=3
30+40
70
20-10
10
Cone
You have 3 red marbles, 4 blue marbles, and 2 green marbles. How many marbles do you have in all?
3+4+2=9