You can split every number into two parts. Add the two parts back together and you have the number from before: 5 is 1 and 4, but also 2 and 3.
Sometimes one part is missing, find the number!
The numbers shown give the answer.
Example
For parents
What does this exercise practice?
This task deepens the understanding that a number can be made up of different smaller groups, the basis for flexible calculating.
Common pitfalls
Children often know only one way to split a number. It helps to show that 7 can also be 1+6 or 2+5; there are always several possibilities.
How to practice at home
Split a handful of gummy bears into two piles and add them up. How many different splits are there? That makes number splitting easy to grasp through play.
Related: Number House, Number Wall
More for parents: matheeule.de/parents