计算。
7/8-5/6= 2/9+1/2= 6/7-2/3= 3/10+1/4=
3/7+1/9= 1/3-1/5= 1/6+1/4= 5/7-1/5=
7/8-5/6=1/24 2/9+1/2=13/18 6/7-2/3=4/21 3/10+1/4=11/20
3/7+1/9=34/63 1/3-1/5=2/15 1/6+1/4=5/12 5/7-1/5=18/35
计算:
(1)36×(1/2-1/3)2
(2)12.7÷(-8/19) ×0
(3)4×(-3)2+6
(4)(-3/4)×(-8+2/3-1/3)
(5)(-2)3-13÷(-1/2)
(6)0-23÷(-4)3-1/8
(7)(-2)3×0.5-(-1.6)2÷(-2)2
(8)(-3/2)×[(-2/3)2-2]
(9)[(-3)2-(-5)2] ÷(-2)
(10)16÷(-2)3-(-1/8) ×(-4)
(1)1; (2)0; (3)42; (4)5.75; (5)18; (6)0; (7)-4.64; (8)4/3; (9) -8; (10)-2/3
计算:
(1)36×(1/2-1/3)2
(2)12.7÷(-8/19) ×0
(3)4×(-3)2+6
(4)(-3/4)×(-8+2/3-1/3)
(5)(-2)3-13÷(-1/2)
(6)0-23÷(-4)3-1/8
(7)(-2)3×0.5-(-1.6)2÷(-2)2
(8)(-3/2)×[(-2/3)2-2]
(9)[(-3)2-(-5)2]÷(-2)
(10)16÷(-2)3-(-1/8)×(-4)
(1)1; (2)0; (3)42; (4)5.75; (5)18; (6)0; (7)-4.64; (8)4/3; (9) -8; (10)-2/3
计算:
(1)(-8)-(-1) (2)45+(-30)
(3)-1.5-(-11.5) (4)-1/4-(-1/2)
(5)15-[1-(-20-4)] (6)-40-28-(-19)+(-24)
(7)22.54+(-4.4)+(-12.54)+4.4
(8) (2/3-1/2)-(1/3-5/6)
(9)2.4-(-3/5)+(-3.1)+4/5 (10)(-6/13)+(-7/13)-(-2)
(11)3/4-(-11/6)+(-7/3)
(12)11+(-22)-3×(-11)
(13)(-0.1)÷1/2×(-100)
(14)(-3/4)×(-2/3 - 1/3) ×0
(15)(-2)3-32
(16)23÷[(-2)3-(-4)]
(17)(3/4-7/8)÷(-7/8)
(18)(-60)×(3/4+5/6)
(1)(-8)-(-1)=-7
(2)45+(-30)=15
(3)-1.5-(-11.5)=10
(4)-1/4-(-1/2)=1/4
(5)15-[1-(-20-4)]=-10 (6)-40-28-(-19)+(-24)=-73
(7)22.54+(-4.4)+(-12.54)+4.4=10
(8) (2/3-1/2)-(1/3-5/6)=-1
(9)2.4-(-3/5)+(-3.1)+4/5=0.7 (10)(-6/13)+(-7/13)-(-2)=1
(11)3/4-(-11/6)+(-7/3)=1/4
(12)11+(-22)-3×(-11)=22
(13)(-0.1) ÷1/2×(-100)=20
(14)(-3/4) ×(-2/3 - 1/3) ×0=0
(15)(-2)3-32=-17
(16)23÷[(-2)3-(-4)]=-23/4
(17)(3/4-7/8) ÷(-7/8)=1/7
(18)(-60) ×(3/4+5/6)=-95
已知一个图的顶点集V={1,2,3,4,5,6,7};边集E={()3,()5,()8,()10,()6,()15,()12,()9,()4,()20,()18,()25},用克鲁斯卡尔算法得到最小生成树,则在最小生成树中依次得到的各条边为()。
A、(1,2)3,(4,6)4,(1,3)5,(1,4)8,(2,5)10,(4,7)20
B、(1,2)3,(4,6)4,(1,3)5,(2,3)6,(1,4)8,(3,6)9
C、(1,2)3,(1,3)5,(1,4)8,(4,6)4,(2,5)10,(4,7)20
D、(1,2)3,(1,3)5,(1,4)8,(2,5)10,(4,6)4,(4,7)20
3198412-4123512346781239 10123451 182 1323343123454.200711 51234566. 7.12345678. 9.123410.
恒牙萌出顺序大致为()
恒牙萌出顺序大致为()
恒牙萌出顺序大致为()
恒牙萌出顺序大致为()