÷6=5…3 47÷ =7…5 19÷ = …4 ÷3=7… 26 ÷ =2…8 32÷ = …5.
360×72+36×280= .
计算:928+217+64+8= .
根据运算定律或性质填空. (25×b)×8= ×( × ) a×6+6×15= ×( + ) 1280÷16÷8= ÷( × )
计算:19×0.125+281×﹣12.5= .
402×25=400×25+2×25是应用了 .