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怎样简便就怎样算12.25+36+7.75286-(186+99)26×101-268×0.64×12.5363×7+237×799×39.

题目详情
怎样简便就怎样算
12.25+36+7.75 286-(186+99)26×101-26
8×0.64×12.5 363×7+237×7 99×39.
▼优质解答
答案和解析
(1)12.25+36+7.75
=12.25+7.75+36
=20+36
=56;

(2)286-(186+99)
=286-186-99
=100+99
=199;

(3)26×101-26
=26×(101-1)
=26×100
=2600;

(4)8×0.64×12.5
=8×12.5×0.64
=10×0.64
=6.4;

(5)363×7+237×7
=(363+237)×7
=600×7
=4200;

(6)99×39
=(100-1)×39
=3900-39
=3861.