题目内容
(1)61×
-1÷17×47+20÷17=
(2)888×9-111×22=
(3)99999×7+11111×37=
(4)2÷
-
÷2=
(5)18÷
-
÷18=
| 1 |
| 17 |
(2)888×9-111×22=
(3)99999×7+11111×37=
(4)2÷
| 4 |
| 9 |
| 4 |
| 9 |
(5)18÷
| 18 |
| 23 |
| 18 |
| 23 |
(1)61×
-1÷17×47+20÷17,
=(61-47+20)×
,
=34×
,
=2;
(2)888×9-111×22,
=111×72-111×22,
=111×(72-22),
=111×50,
=5550;
(3)99999×7+11111×37,
=11111×63+11111×37,
=11111×(63+37),
=11111×100,
=1111100;
(4)2÷
-
÷2,
=4
-
,
=4
;
(5)18÷
-
÷18,
=23-
,
=22
.
| 1 |
| 17 |
=(61-47+20)×
| 1 |
| 17 |
=34×
| 1 |
| 17 |
=2;
(2)888×9-111×22,
=111×72-111×22,
=111×(72-22),
=111×50,
=5550;
(3)99999×7+11111×37,
=11111×63+11111×37,
=11111×(63+37),
=11111×100,
=1111100;
(4)2÷
| 4 |
| 9 |
| 4 |
| 9 |
=4
| 1 |
| 2 |
| 2 |
| 9 |
=4
| 5 |
| 18 |
(5)18÷
| 18 |
| 23 |
| 18 |
| 23 |
=23-
| 1 |
| 23 |
=22
| 22 |
| 23 |
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