Divide 15 by 2: 15 ÷ 2 = 7.5 Subtract 0.5 from 7.5 (this will later be added back): 7.5 - 0.5 = 7 Subtract 1 from 7 (she wants to buy at least 2 more children books): 7 - 1 = 6 Subtract 6 from 15 (6 being the number of puzzle books, 15 being the total number of items): 15 - 6 = 9 (number of children books)
If You know how to do long division then... You move the decimal that’s outside the house to where it’s not there no more then divide . Or turn the decimals into Fractions and do the reciprocal.
