西昌四小六年级二班专项练习
分数乘除法对比练习题
1、直接写出得数: 554272325
×12 = 6× = × = + = 2 × = 24249103456
86135139174
72÷ = - = ÷12= ÷ = ÷ = 9175162010087
511311111 6?= × ×10= -( - )= ÷ ÷ =
45474305521
2、下面各题怎样简便怎样算:
415711391394 × × 12×( - ) × + × 72212124810171017
1111139988 - × 36× ÷ × 13133337261327
16916493834 ÷ + × ( - )× ( -0.125)× 3914399423813
43415111 ÷ + ÷3 (1--)÷ 12÷(1+-) 72736824 322333102×4÷×4 -÷3+ 5-×-
555442217
23119673715×(+)÷ ÷[×(1-)] -(-) 54510
34×25+34×0.6
3、求比值
14035 0.4
4、化简比
0.3吨∶150千克 0.6
3、解方程: 815 X+512 X = 57 13117725×811+725÷113 ∶23 ∶
23 X÷3585 = 12 ×15 12412725×101-725 3X +135
35 = 7