Matching Pairs Optellen en aftrekken in ZOnline version Los de oefeningen op en vind letters om de code te kraken! by Ellen Bosmans 1 -5-(+3)= 2 -20-30= 3 30-(-10)= 4 -7+10= 5 -8-(-5)= 6 -25+10= 7 18+(-3)= 8 -25+(-15)= 9 36+10= 10 -8+6= 11 -2-(-4)= 2 -50 3 -8 46 -15 -40 40 -2 15 -3