Let's understand where the 6 tens come from! 🧐 **Step 1:** Imagine the number 68 as groups of tens and ones. 68 means 6 tens and 8 ones. **Visual:** ⬇️ **Step 2:** When we add 5 more ones, we add it to the 8 ones. $8 + 5 = 13$ ones. **Step 3:** 13 ones is 1 ten and 3 ones. So, the 1 ten comes from turning 10 ones into a group of ten. **Step 4:** Now add that 1 ten to the original 6 tens: $6 + 1 = 7$ tens. **Step 5:** So the number is now 7 tens and 3 ones, which is 73. Great question! Keep asking! 🌟