Cover the answers with a separate sheet. The child must say the result. For every correct answer, they draw a piece of cheese for the mouse. This transforms a traditional worksheet into a narrative.
Print the PDF at 80% scale (to leave margins for notes). Staple the pages. Let the child color the "ratinho" on each page. Coloring the character creates an emotional bond with the learning material.
"O ratinho roeu o queijo da tabuada do 2..."