Operations and Algebraic thinking

2nd grade

Represent and solve problems involving addition and subtraction.

Add the numbers. Level 1

Use the blocks to calculate

Add and subtract within 20

Add the numbers. Level 2

Add the numbers. Level 3

Add the numbers. Level 4

Find the missing digit

Work with equal groups of objects to gain foundations for multiplication.

Is the number even or odd? Level 1

Tens 50-100

Is the number even or odd? Level 2

Is the number even or odd? Level 3