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下列各题怎样算简便就怎样算.16+34×23÷2[1-(12+38)]÷14(34+12-7
问题详情
下列各题怎样算简便就怎样算.
参考答案
16+34×23÷2
=16+34×23×12
=16+14=512;
[4-(34-38)]×429
=[4-38]×429
=298×429
=12;
[1-(12+38)]÷14
=[1-78]×4
=18×4
=12;
1724×34+1724÷4
=1724×(34+14)
=1724×1
=1724;
(34+12-712)×24
=34×24+12×24-712×24
=18+12-14
=16;
2-613÷926-23
=2-613×269-23
=2-113-23
=0;
考点: