递等式计算(能巧算的要巧算,并写出必要的计算过程) 988÷4+1222167-67×5 648+375+25+152195×2÷3 89
递等式计算(能巧算的要巧算,并写出必要的计算过程)988÷4+1222167-67×5648+375+25+152195×2÷3892-(158-192)96×6-6×4...
递等式计算(能巧算的要巧算,并写出必要的计算过程) 988÷4+1222167-67×5 648+375+25+152195×2÷3 892-(158-192)96×6-6×46.
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(1)988÷4+122
=247+122
=369;
(2)2167-67×5
=2167-335
=1832;
(3)648+375+25+152
=(648+152)+(375+25)
=800+400
=1200;
(4)195×2÷3
=390÷3
=130;
(5)892-(158-192)
=892-158+192
=734+192
=926;
(6)96×6-6×46
=6×(96-46)
=6×50
=300.
=247+122
=369;
(2)2167-67×5
=2167-335
=1832;
(3)648+375+25+152
=(648+152)+(375+25)
=800+400
=1200;
(4)195×2÷3
=390÷3
=130;
(5)892-(158-192)
=892-158+192
=734+192
=926;
(6)96×6-6×46
=6×(96-46)
=6×50
=300.
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