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11×22+0.22×3300+330×4.4简算
人气:319 ℃ 时间:2020-04-12 12:43:24
解答
11×22+0.22×3300+330×4.4
=11×22+22×33+33×44
=22×(11+33)+33×44
=22×44+33×44
=(22+33)×44
=55×44
=2420
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