Add the numbers. Level 1
Use the blocks to calculate
Add the numbers. Level 2
Add the numbers. Level 3
Add the numbers. Level 4
Find the missing digit
Is the number even or odd? Level 1
Is the number even or odd? Level 2
Is the number even or odd? Level 3
Tens 50-100
Decompose the number.
Which digit is in ... place? Level 2