李大爷家有黑兔172只,黑兔的只数比白兔多75只,李大爷家有白兔多少只?
68×34+68×67﹣68.
26×49+26.
用简便方法计算:24.6×4.6+246×0.44+24.6.
①25.74﹣2.36﹣7.64 ②0.75×0.25×4 ③8.4÷0.25÷4④2.8×3.6+1.4×2.8.
96×101.