A-A+
500+900=1400-700=800+500=1200-500=2500+700=640
问题详情
参考答案
500+900=14001400-700=700800+500=13001200-500=7002500+700=32006400-800=560085-6×6=49780+30=81052-18=3447+39=861000+990=1990200+800=1000670+300=9707800-700=71001000-990=1058+72÷8=672000-200=18007000-4000=3000500+4300=48001000-800=200400+500=9005300+1000=6300320+600=920700-40=660200+300=5001500-500=1000400-200=200600+2000=2600440-60=38080+70=150600+70=670510-500=10.
考点: