If you’re looking for simple introductory exercises for kids to learn addition, these are the 10 frames. Just the thing to start learning addition to 10. Simple operations, and simple visualization with grids and dots.
How to perform an exercise? First, children choose two colors to color the dots. They color the dots corresponding to the first number with the first color, and the second color with the second color. They can color in pairs, although I suggest starting with coloring the top row first, and then the bottom one. In this way, children learn to count by fives.
Below you will find two files that you can use. The first contains only the exercise for kids, while the second file contains both the exercise and its answers.