480道五年级口算题啊,切记一定要答案

1 50 题3.4－1.4= 2 7.82－7.2= 0.62 2.19＋9.1= 11.2910.1－0.89= 9.210.68＋0.42= 1.1 8.1－5.1= 30.728－0.24= 0.968 0.8＋0.18= 0.98 0.89－0.25= 0.641－0.98= 0.02 0.048＋0.52= 0.568 5×400= 200019.9+11.1=...