shapes
subtraction
addition
base-10
numbers
100
A shape with 3 corners and 3 sides.
What is a triangle?
100

5 - 4 =

1

100
2 + 2 =
What is 4?
100

1 long & 3 ones

13

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

3 - 3 = 

0

200
3 + 2 =
What is 5?
200

1 long & 5 ones

15

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

4 - 0 = 

4

300
3 + 3 =
What is 6?
300

2 longs

20

300
The number that comes after 39.
What is 40?
400
A shape with 2 long sides and 2 short sides.
What is a rectangle?
400

5 - 3 =

2

400
5 + 2 =
What is 7?
400

1 long & 2 ones

12

400
The number that comes before one.
What is 0?
500
A shape that looks likes a can.
What is cylinder?
500

6 - 3 = 

3

500
7 + 3 =
What is 10?
500

1 long

10

500
The number that comes after 99.
What is 100?
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