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
问题描述:
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
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