3.4+7x1.5简便计算五年级

厍殃梦22573.4X7X1.5的简便方法 -
乐闸梵15812539108 ______ =1.7*7*3 =11.9*3 =35.7

厍殃梦22573.4乘7乘1.5简便计算 -
乐闸梵15812539108 ______ 3.4乘7乘1.5简便计算 =3.4x(7x1.5) =3.4x10.5 =3.4x(10+0.5) =3.4x10+3.4x0.5 =34+1.7 =35.7

厍殃梦22573.4x7x1.5怎么简算 -
乐闸梵15812539108 ______ 3.4x7x1.5=3.4x10.5=34+1.7=35.7

厍殃梦22573.4x7x1.5的简便计算 -
乐闸梵15812539108 ______ =3.4x1.5x7=(3x1.5+0.4x1.5)x7=(4.5+0.6)x7=5.1x7=35.7

厍殃梦22573.4x7x1.5用简便方法计算 -
乐闸梵15812539108 ______ 3.4*1.5*7

厍殃梦2257简便算3.4x7x1.5 -
乐闸梵15812539108 ______ 简便算3.4x7x1.5 3.4x7x1.5 =7x1.5x3.4 =10.5x3.4 =10x3.4+0.5x3.4 =34+1.7 =35.7

厍殃梦22573.4X7X1.5简便方法 -
乐闸梵15812539108 ______ 3.4X7X1.5简便方法3.4X7X1.5=3.4*10.5=3.4*10+3.4*0.5=34+1.7=35.7

厍殃梦22573.4*7*1.5=(要简便运算, -
乐闸梵15812539108 ______[答案] 3.4*7*1.5 =3.4*10.5 =3.4*(10+0.5) =34+1.7 =35.7

厍殃梦22573.4*7*1.5简便运算 -
乐闸梵15812539108 ______ 1.7*2*7*1.51.7*7*31.7*21 这算简便了吗

厍殃梦22573.4*7*1.5简便运算怎么解? -
乐闸梵15812539108 ______ 3.4*7*1.5 =1.7*2*7*1.5 =1.7*7*2*1.5 =11.9*3 =35.7