Fill in the Blanks CALCULO MENTALOnline version CALCULA LAS SIGUIENTES OPERACIONES by Maria Morales 1 11 15 4 12 20 10 4 21 10 2 12 15 8 + 4 = 15 + 5 = 20 - 5 = 9 + 6 = 17 - 7 = 7 + 3 = 7 + 5 = 8 - 4 = 6 + 5 = 6 - 4 = 26 - 5 = 35 + 5 =