(-24)÷(-3/8)÷(-2/7)÷(-4/35)= (-2又2/3)÷(-1又7/9)=
(-1.4+14/15)÷(-7/30)= -3的2次方÷(-2又1/4)*(3/2)的3次方=
(+3又1/2)+(-7.89)+(-2又1/2)+(-0.64)+(+7.89)+0.64= 要过程拜托拜托拜托拜托
(-3)÷(-2\/5)÷(-|\/4)等于几?
解:(-3)÷(-2\/5)÷(-1\/4)=-3×-5\/2×-4 =-(3×5×2)=-30
(-24)÷(-3\/8)÷(-2\/7)÷(-4\/35)= (-2)÷(-3\/5)*4\/5÷(-3又1\/5)=
=224×35\/4 =1960 (-2)÷(-3\/5)*4\/5÷(-3又1\/5)= -2*5\/3*4\/5÷(16\/5)= -8\/3 *5\/16 =-5\/6 (-2又2\/3)÷(-1又7\/9)=8\/3* 9\/16 =3\/2 (-1.4+14\/15)÷(-7\/30)=(-2\/5-1\/15)÷(-7\/30)=7\/15 * 30\/7 =2 -3的2次方÷(-2又1\/4)*(3\/2...
(-3\/5)×(-3又1\/2)÷(-1又1\/4)÷3计算,要过程
回答:-3\/5✘(-7\/2)✘(-4\/5)✘1\/3=-14\/25
(-3)÷[(-2\/5)÷(-1\/4)]+3\/4?
=(-3)÷(2\/5×4)+3\/4 =(-3)×5\/8+3\/4 =(-15+6)\/8 =-9\/8
括号-3\/5括号乘以括号-3与1\/2括号除以括-1有1\/4括号除以3等于多少?
(-3\/5)×(-3又1\/2)÷(-1又1\/4)÷3 =(-3\/5)×(-7\/2)÷(-5\/4)÷3 =-3\/5×7\/2×4\/5×1\/3 =-1\/5×7×2\/5×1 =-14\/25。
(—2又1\/4)×(—3又4\/5)=(要有过程!)
回答:=(-9\/4)(-19\/5) =9\/419\/5 =171\/20 =8又11\/20
(-1又1\/4)×(-3又4\/5) 的得数等于多少
回答:85\/16
初中有理数除法(-3)\/(-2\/5)\/(-1\/4)怎么算?
(-3)\/(-2\/5)\/(-1\/4)=-3×(-5\/2)×(-4)=-30
能简便的用简便方法。(2\/3一2\/5)×(3\/4÷4\/5)=
能简便的用简便方法。(2\/3一2\/5)×(3\/4÷4\/5)=(2\/3-2\/5)*(3\/4*5\/4)=(2\/3-2\/5)*15\/16 =2\/3*15\/16-2\/5*15\/16 =5\/8-3\/8 =2\/8 =1\/4
有理数混合运算 答案
(1)零减去a的相反数,其结果是___; (2)若a-b>a,则b是___数; (3)从-3.14中减去-π,其差应为___; (4)被减数是-12(4\/5),差是4.2,则减数应是___; (5)若b-a<-,则a,b的关系是___,若a-b<0,则a,b的关系是___; (6)(+22\/3)-( )=-7 (三)判断题: (1)一个数减去一个负数,...