A-A+

在横线里填上合适的数或符号.(1)25-19-89+35=25+35-(19______89

2022-08-14 02:34:44 问答库 阅读 200 次

问题详情

在横线里填上合适的数或符号.
(1)2

5

-1

9

-8

9

+3

5

=2

5

+3

5

-(1

9

______8

9

)
(2)11

18

-(7

18

+1

9

)=11

18

-______-______
(3)5

19

+6

11

+5

11

+10

19

=(5

19

+______)+(______+______)
(4)2

7

+5

11

+5

7

=______+______+5

11

参考答案


(1)25-19-89+35
=25+35-(19+89),
=1-1,
=0;

(2)1118-(718+19).
=1118-718-19
=29-19
=19

(3)519+611+511+1019
=(519+1019)+(611+511),

=1519+1,
=11519

(4)27+511+57
=27+57+511
=1+511
=1511

故答案为:+,7181910196115112757

考点:横线,符号