(1)(33221-332.21)÷(66442-664.42)
题目
(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,
答案
(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
举一反三
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