Things needed:
White sheet
Sketchpens
Method:
Draw any object which your kid likes.
Divide it into many parts. Write two numbers to add in the box.
As my kid is very small , I have given only the addition where the sum is within 10. For older kids you can give large numbers and assign one colour for five to ten numbers.
Here I have marked one colour each for the answers.
Ask your kid to calculate the sum and fill the box with the colour of the sum.