(1)(33221-332.21)÷(66442-664.42)(2)(2002002+200.2002)÷(8008008+800.8008)(3) (1234+123.4-12.34)-(2468+246.8-24.68)简便算法,如:(44332-443.32)÷(88664-886.64)=(44332-443.32
来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/23 16:00:20
(1)(33221-332.21)÷(66442-664.42)(2)(2002002+200.2002)÷(8008008+800.8008)(3) (1234+123.4-12.34)-(2468+246.8-24.68)简便算法,如:(44332-443.32)÷(88664-886.64)=(44332-443.32
(1)(33221-332.21)÷(66442-664.42)
(2)(2002002+200.2002)÷(8008008+800.8008)
(3) (1234+123.4-12.34)-(2468+246.8-24.68)
简便算法,如:
(44332-443.32)÷(88664-886.64)
=(44332-443.32)÷[(44332-443.32)×2]
=(44332-443.32)÷(44332-443.32)÷2
= 1÷2
= 0.5
快,
(1)(33221-332.21)÷(66442-664.42)(2)(2002002+200.2002)÷(8008008+800.8008)(3) (1234+123.4-12.34)-(2468+246.8-24.68)简便算法,如:(44332-443.32)÷(88664-886.64)=(44332-443.32
(33221-332.21)÷(66442-664.42)
=(33221-332.21)÷2(33221-332.21)
=0.5
(2002002+200.2002)÷(8008008+800.8008)
=(2002002+200.2002)÷4(2002002+200.2002)
=0.25
速度
(33221-332.21)÷(66442-664.42)
=33221(1-0.01)/66442(1-0.01)
=33221/66442
=33221/33221*2
=1/2
=0.5
(2002002+200.2002)÷(8008008+800.8008)
=2002002(1+0.0001)/8008008(1+0.0001)<...
全部展开
(33221-332.21)÷(66442-664.42)
=33221(1-0.01)/66442(1-0.01)
=33221/66442
=33221/33221*2
=1/2
=0.5
(2002002+200.2002)÷(8008008+800.8008)
=2002002(1+0.0001)/8008008(1+0.0001)
=2002002/2002002*4
=1/4
=0.25
(1234+123.4-12.34)-(2468+246.8-24.68)
=1234(1+0.1-0.01)/2468(1+0.1-0.01)
=1234/1234*2
=1/2
=0.5
收起
(1)(33221-332.21)÷(66442-664.42)
=(33221-332.21)÷[(33221-332.21)×2]
=(33221-332.21)÷(33221-332.21)÷2
=1÷2
=0.5
(2)(2002002+200.2002)÷(8008008+800.8008)
=(2002002+200.2002)÷(2...
全部展开
(1)(33221-332.21)÷(66442-664.42)
=(33221-332.21)÷[(33221-332.21)×2]
=(33221-332.21)÷(33221-332.21)÷2
=1÷2
=0.5
(2)(2002002+200.2002)÷(8008008+800.8008)
=(2002002+200.2002)÷(2002002+200.2002)÷4
=0.25
(3) (1234+123.4-12.34)-(2468+246.8-24.68)
=(1234+123.4-12.34)—(1234+123.4-12.34)*2
=—(1234+123.4-12.34)
=—1345.06
收起
(33221-332.21)÷(66442-664.42)
=(33221-332.21)÷[(33221-332.21)×2]
=(33221-332.21)÷(33221-332.21)÷2
=1÷2
=0.5
(33221-332.21)÷(66442-664.42)
=33221(1-0.01)/66442(1-0.01)
=33221/66442
=33221/33221*2
=1/2
=0.5
(2002002+200.2002)÷(8008008+800.8008)
=2002002(1+0.0001)/8008008(1+0.0001)<...
全部展开
(33221-332.21)÷(66442-664.42)
=33221(1-0.01)/66442(1-0.01)
=33221/66442
=33221/33221*2
=1/2
=0.5
(2002002+200.2002)÷(8008008+800.8008)
=2002002(1+0.0001)/8008008(1+0.0001)
=2002002/2002002*4
=1/4
=0.25
(1234+123.4-12.34)-(2468+246.8-24.68)
=1234(1+0.1-0.01)/2468(1+0.1-0.01)
=1234/1234*2
=1/2
=0.5
收起