Add whole numbers (number line)

Count up by 10 from 0

Find whole numbers to make given sums

Balance addition and subtraction expressions

Add and subtract whole numbers (number line)

Use counting to add and subtract whole numbers

Find whole numbers to make a sum of 10

Solve one-step equations (addition)

Subtract whole numbers on the number line

Count up by 10 from multiples of 10

Solve one-step equations (addition)

Use operations to combine numbers to reach a target (four operations)

Use matching to compare two sets

Add two whole numbers

Solve subtraction by multiples of 10

Partition shapes into halves (rectangles, circles)

Strategize to solve subtraction problems (two terms)

Represent fractions with subsets

Represent whole numbers with words

Find three whole numbers that add to 10

Use inequality symbols to compare whole numbers

Partition polygons to form other polygons

Count up from any whole number

Game: Add and subtract whole numbers (hundred board)

Measure heights by counting (no units)

Create and interpret pictographs

Use counting to add whole numbers

Solve problems with skip counting (multiple solutions)

Compare and order three sets

Use inequality symbols to compare whole numbers

Combine or subdivide polygons to form other polygons

Count up from multiples of 10

Partition shapes into halves and quarters (rectangles, circles)

Create equal sums with multiples of 10 (known sum)

Solve problems with skip counting

Create combinations to meet requirements (count by 4)

Compare heights of objects

Create and interpret pictographs

Strategize to solve subtraction problems (three terms, two operations)

Use regrouping to add and subtract whole numbers

Create equal sums (known sum)

Combine triangles to form polygons

Add whole numbers (shopping)

Create, interpret, and calculate from pictographs

Create combinations to meet requirements (count by 5)

Solve problems with addition and multiplication (six options)

Solve subtraction

Use matching to compare two sets and find differences

Create two-digit whole numbers using place value

Find three multiples of 10 that add to 100

Create equal sums (known sum)

Create combinations to meet requirements (count by 3)

Add whole numbers

Solve subtraction from 20

Create and interpret tally marks

Subtract two whole numbers

Use matching to compare two sets and find differences

Order whole numbers

Find three whole numbers that add to 20

Create equal sums (known sum)