(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, 数学
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【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