SOLVE MATHVersión en línea SOLVE ADDITIONS AND SUBSTRACTIONS por Cynthia Espín Lafebre 1 HOW MUCH IS IT? a 10 b 4 c 2 d 5 2 HOW MUCH IS IT? a 9 b 4 c 10 d 1 3 HOW MUCH IS IT? a 11 b 2 c 10 d 9 4 HOW MUCH IS IT? a 15 b 20 c 2 d 5 5 HOW MUCH IS IT? a 10 b 7 c 13 d 11