Show:
shapes
subtraction
addition
decomposing
numbers
100
A shape with 3 corners and 3 sides.
What is a triangle?
100

10-6=

What is 4?


100
2 + 2 =
What is 4?
100

1 ten and 7 ones

What is 17?

100
The number that comes after 14.
What is 15?
200
A shape with 4 equal sides.
What is a square?
200

7-4=

What is 3?

200
3 + 2 =
What is 5?
200

1 ten and 5 ones

What is 15?

200
The number that comes after 29.
What is 30.
300
A shape that looks like a ball.
What is a sphere?
300
10-3=

What is 7?

300
3 + 3 =
What is 6?
300

1 ten and 2 ones 

What is 12?


300

The number that comes before 11

What is 10?

400
A shape with 2 long sides and 2 short sides.
What is a rectangle?
400

8-3=

What is 5?

400
5 + 2 =
What is 7?
400

1 ten and 6 ones

What is 16?

400

The number that comes before 1.

What is 0?

500
A shape that looks likes a can.
What is cylinder?
500

6-4=

What is 2?

500
7 + 3 =
What is 10?
500

2 tens 

What is 20?

500

The number that comes after 99.

What is 100?