0.99×0.7+0.11+×2.7简便运算?
1个回答
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(1)0.99×0.7+0.11×2.7
=(0.11×9)×0.7+0.11×2.7
=0.11×(9×0.7)+0.11×2.7
=0.11×6.3+0.11×2.7
=0.11×(6.3+2.7)
=0.11×9
=0.99
(2)0.99×0.7+0.11×2.7
=0.99×0.7+0.11×(9×0.3)
=0.99×0.7+(0.11×9)×0.3
=0.99×0.7+0.99×0.3
=0.99×(0.7+0.3)
=0.99×1
=0.99
以上信息仅供参考,麻烦请及时采纳回答,谢谢!
=(0.11×9)×0.7+0.11×2.7
=0.11×(9×0.7)+0.11×2.7
=0.11×6.3+0.11×2.7
=0.11×(6.3+2.7)
=0.11×9
=0.99
(2)0.99×0.7+0.11×2.7
=0.99×0.7+0.11×(9×0.3)
=0.99×0.7+(0.11×9)×0.3
=0.99×0.7+0.99×0.3
=0.99×(0.7+0.3)
=0.99×1
=0.99
以上信息仅供参考,麻烦请及时采纳回答,谢谢!
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