Consider this senerio: a child extends one finger and says 8, another finger and says 9, a third finger and says 10, and finally a fourth finger and says 11. The student just calculated 11 7 = 4 using the counting on (or counting up) method. This is commonly used when 'making change.' Say you make a $7 purchase using a $20 bill. The cashier hands you three one dollar bills followed by a $10 bill while "saying 8, 9, 10, and 10 more makes 20." You and the cashier calculated 20 - 7. In this regard, | believe this was - and maybe still is - the most commonly used subtraction method in the "real\" world. Compute 775 186 using the counting up algorithm. 186 +