In every column there are two numbers, one on top and one below.
Choose exactly one number from each column so that the sum is right.
There is always only one way that makes exactly the target sum.
Example: target sum 9
Column 1: top 2, bottom 5. Column 2: top 3, bottom 7.
Try: 2 + 3 = 5, 2 + 7 = 9, 5 + 3 = 8, 5 + 7 = 12.
Only 2 + 7 makes 9, that is the right way.
The numbers written in show the answer.
Example
For parents
What does this exercise practice?
Deliberately find the matching combination out of several options while flexibly comparing sums.
Common pitfalls
Children often only try the top row and give up. It helps to work through all paths in order and compare them with the target sum.
How to practice at home
Lay out two pairs of cards and say a target number. The child looks for one card from each pair whose sum fits.
Related: Number Sentences with a Gap, Ingredient Search