Read the story, do the math, and bolt another part onto your gadget. Every correct step brings your build closer to done - but watch for extra numbers that do not belong!
Pick your starting grade:
Tap the correct answer (or press 1-4). Some questions ask for the final answer; others ask which operation to do first. Answer fast for bonus points and build a streak - but a wrong answer costs a life. The workshop learns your weak spots and gives you more practice where you need it. 🧰