(-17/4)+(-10/3)+(+13/3)+(11/3) (-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4) 5+(-7)+17-10(-14)+4-19-122100-21×53+2255 (103-336÷21)×15 40×48-(1472+328)÷5 (488+344)÷(202-194)(154-76)×(38+49) 816÷(4526-251×18)
来源:学生作业帮助网 编辑:作业帮 时间:2024/05/14 04:20:26
(-17/4)+(-10/3)+(+13/3)+(11/3)
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
5+(-7)+17-10
(-14)+4-19-12
2100-21×53+2255
(103-336÷21)×15
40×48-(1472+328)÷5
(488+344)÷(202-194)
(154-76)×(38+49)
816÷(4526-251×18)
(-17/4)+(-10/3)+(+13/3)+(11/3)
=-17/4+14/3
=5/12.
(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
=1.7-1.7
=0.
5+(-7)+17-10
=5.
(-14)+4-19-12
=-10-31
=-41.
2100-21×53+2255
=2100-1113+2255
=2100+1142
=3242.
(103-336÷21)×15
=(103-16)×15
=1545-240
=1305.
剩下部分留给您练习,可以吗?
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