# Texas - Grade 1 - STAAR Math - Number and Operations - Compose and Decompose Numbers - 1.2.B

### Description

Use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones.

• State - Texas
• Standard ID - 1.2.B
• Subjects - MathTX 2014
• Grade - 1

### Keywords

• STAAR Math
• Texas grade 1
• Number and Operations

## More Texas Topics

1.5(E) Understand that the equal sign represents a relationship where expressions on each side of the equal sign represent the same values (F) Determine the unknown whole number in an addition or subtraction equation when the unknown may be any one of the three or four terms in the equation

Identify three-dimensional solids, including spheres, cones, cylinders, rectangular prisms .including cubes, and triangular prisms, and describe their attributes using formal geometric language.

Distinguish between attributes that define a two-dimensional or three-dimensional figure and attributes that do not define the shape.

1.6(F) Compose two-dimensional shapes by joining two, three, or four figures to produce a target shape in more than one way if possible (C) Create two-dimensional figures, including circles, triangles, rectangles, and squares, as special rectangles, rhombuses, and hexagons

1.6(G) Partition two-dimensional figures into two and four fair shares or equal parts and describe the parts using words (H) Identify examples and non-examples of halves and fourths

## Here is the skill that Texas requires you to master

• Grade Level 1
• State Test STAAR
• State Standards Texas Essential Knowledge and Skills (TEKS)
• Subject STAAR Math
• Topic Name Compose and Decompose Numbers
• Standard ID 1.2.B
• Description
Use concrete and pictorial models to compose and decompose numbers up to 120 in more than one way as so many hundreds, so many tens, and so many ones.