Worksheet Generator Power Up Your Brain with Addition / Subtraction Addition Addition & Subtraction 1 Digit 2 Digit 3 Digit 4 Digit 4 Rows 5 Rows 10 Rows 30 Questions 60 Questions Generate Worksheet Time: 0s ✅ Submit ✅ Submit & ✅ Whatsapp function startTimer() { clearInterval(interval); interval = setInterval(() => { time++; document.getElementById(“timer”).innerText = `Time: ${time}s`; }, 1000); }