77.7×90+111×37怎么简算

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77.7×90+111×37怎么简算
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77.7×90+111×37怎么简算
77.7×90+111×37怎么简算

77.7×90+111×37怎么简算
77.7×90+111×37
=111×0.7×90+111×37
=111×(0.7×90+37)
=111×100
=11100

77.7×90+111×37
=11.1×7×90+11.1×10×37
=11.1×630+11.1×370
=11.1×(630+370)
=11.1×1000
=11100

77.7×90+111×37
= 111×0.7×90+111×37
=111×7×9+111×37
=111×63+111×37
=111×(63+37))
=111×100
=11100