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99.99*7+37*11.11-99.99除以0.1 简算
一定要简算
99.99*7+37*11.11-99.99÷0.1
人气:482 ℃ 时间:2020-02-20 15:09:12
解答
99.99×7+37×11.11-99.99÷0.1
=11.11×9×7+37×11.11-11.11×9÷0.1
=(63+37)×11.11-11.11×9÷0.1
=100×11.11-9×11.11÷0.1
=11.11×(100-90)
=111.1
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