Froggy Jumps CuentasOnline version Calcula las sumas y restas by Jorgelina Astudillo 1 50+50 a 99 b 100 c 2 10+20 a 13 b 33 c 30 3 70-30 a 27 b 40 c 80 4 30+7 a 40 b 37 c 65 5 10-6 a 35 b 4 c 41 6 36-6 a 30 b 67 c 30 7 700+300 a 10,000 b 867 c 999 8 9-8 a 1 b 75 c 453 9 45+45 a 59 b 73 c 90 10 10+4 a 45 b 98 c 14 11 60-20 a 20 b 68 c 4o 12 70+30 a 70 b 100 c 30