脱式计算
计算综合运算时，先 再 ，有括号的先算 ，没有括号时 ，等号写在算式的 。
（234-155）×6 268×6-98 236-100×2 （52+56）×6 = = =
=
=
= =
=
4×156+891 8= =
56×0+256 78= = =
81÷9+752 561-45+452 156+56=
= = = =
636+0-636 752-52+63 563=
= = = =
（25+63）-72 854+36-678 64=
= = = =
63÷7×9 =
= = = =
46+96×1 56= = = = = = = = 586×5-596
= = = = = = = =
×（365-246） 781-81= = = =
=
×(4+4) 265-(156+52) (63-63) =
= = =
= = =
= = =
= = =
（98-7）÷9 563= = =
÷7×0 845-762+152 (632-512)+63 56+(842-632)
×5 ÷8 72×3-169 372-196+542 ÷（96-88） 563×1+26 251（598-436）×5 625+26-681 152×4-351
=
×6 =
÷8×9 ×1-346 ×6×0
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