Numbers stand in the four corners, the arrows show the calculation steps.
Follow the arrow and calculate what is written above it.
The number in the middle is the same for both diagonals.
Where a field is empty, you fill in the missing operation.
Example
For parents
What does this exercise practice?
Arrow calculating combines addition and subtraction with reading an arrangement. Children practice planning steps from a starting number and recognizing the connection between corners and diagonals.
Common pitfalls
Some children calculate the arrows in the wrong direction. Show how the arrow always points from the starting number to the target number and compare: getting smaller is minus, getting bigger is plus.
How to practice at home
Draw your own arrow cross together with four corner numbers that are all even. Think about which operation fits in the middle so that both diagonals work out the same.
Related: Wall, Caterpillar