We are learning how to make a whole number look exactly like a mixed number with a whole part and a fraction part, so that we can subtract from it. 1. We are borrowing 1 from the 3, leaving 2, and then breaking the 1 that we borrowed into 2 halves.2. We are borrowing 1 from the 3, leaving 2, and this time we are breaking the 1 that we borrowed into 3 thirds. 3. We are borrowing 1 from the 3, leaving 2, and this time we are breaking the 1 that we borrowed into 6 sixths. We can always borrow 1 from the whole number, then break the 1 that we borrow from the whole number into any of these that we need in order to be able to subtract a fraction from it: 2 halves, 3 thirds, 4 fourths, 5 fifths, 6 sixths, 7 sevenths, etc., etc. That is, we can write the whole number: as or as or even , whatever we need it to be written as, so we can subtract a fraction from it. as or as or even , whatever we need it to be written as, so we can subtract a fraction from it. Edwin