2-D Shapes
Partitioning
2 Step Word Problems
Addition and Subtraction within 100
100

I am a 2D shapes with no sides and no vertices.

Circle

100

Define a whole.

An item where there are no shares, or all the shares are there.

100

Hannah has 24 marbles. She gave 12 to James, and then Lola gave her 14. How many marbles does Hannah have now?

26

100

Using base ten blocks:

24+53

77

200

I am a 2D shape with 3 sides and 3 vertices

Triangle

200

Define a half

one equal share of 2 shares

200

Michael has 37 apples. Tiffany gave him 10 more apples, and then he gave 9 to Taylor. How many apples does Michael have now?

38

200

Using place value:

62+19

81

300

I am a 2D shape with 5 sides and 5 vertices

Pentagon

300

Define a third

one equal share of 3 shares

300

Rhonda has 46 markers for a project. Her teacher took away 15 markers, and then her friend took 16 more. How many markers does Rhonda have now?

15

300

Using the number line:

47+13

60

400

I am a 2D shape with 6 sides and 6 vertices

Hexagon

400

Define a fourth

one equal share of 4 shares

400

Anna has 20 straws. Chris gave her 15 straws, but then Mary took 33 of them. How many straws does Anna have now?

2

400

Use any strategy:

34+55

89

500

I am a 2D shape with 4 sides and 4 vertices

Quadrilateral

500

Define equal parts

when all of the whole's pieces are the same shape and size.

500

Shelby has 24 students in her classroom. She got 2 new students, but then 13 of them moved. How many students does Shelby have now?

13

500

Use any strategy:

77+23

100