Count By...
1 - 1 =
0
I am 2D and have 3 sides.
Triangle
5+3=
8
I am 2D and I have 4 equal sides.
Square
Which number is bigger? 79 or 83?
83
6 + 4 =
10
Draw a rectangle.
See board
What is 2 less than 10?
8
Count down from 76, __, __, __, __, 71
75, 74, 73, 72
10 - 3 =
7
I am 3D and have 6 square faces.
cube
What is the rule? 9, 12, 15, 18, 21, 24
counting by 3s
9 + 9 =
18
I am 3D and am shaped like a ball.
Sphere
Sally has 11 eggs. She gave 6 to her friend. How many eggs does she have left?
5