So how do we use this to multiply by 9? 📌e.g. 9x27 Step 1: The next multiple of 10 is 30 so we’ll subtract 3 from 27: ✨27-3=24 Step 2: The difference between the units digit (7) and 10 is 3 ✨So 9x27=243 📌e.g. 9x44 Step 1: The next multiple of 10 is 50 so we subtract 5 from 44: ✨44-5=39 Step 2: The difference between the units digit (4) and 10 is 6 ✨So 9x44=396 🤓If we’re already have a multiple of ten, that’s the one we use for the subtraction, then we just stick a 0 on the end: e.g. 9x60 ✨60-