How many chicks? Press the number keys 0-9, then enter. Backspace? Unfortunately, this doesn't work in Scratch. Press left arrow key instead. All code by me (@kriblo), except the PTE, which is by @-REX-. Art is from the Scratch library (hatchling). Updated to avoid loops and instead use Key pressed event handlers. Works much better.
Addition: https://scratch.mit.edu/projects/452870821/ Subtraction: https://scratch.mit.edu/projects/452643548/
