题目内容
怎样简便怎样算
2.65×101
(2.4×
+3.6÷
)×
×
+
÷
999
+99
+9
+
.
2.65×101
(2.4×
| 5 |
| 8 |
| 3 |
| 4 |
| 12 |
| 7 |
| 5 |
| 8 |
| 11 |
| 10 |
| 3 |
| 8 |
| 10 |
| 11 |
999
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
| 1 |
| 3 |
(1)2.65×101,
=2.65×100+2.65,
=265+2.65,
=267.65;
(2)(2.4×
+3.6÷
)×
,
=(1.5+3.6×
)×
,
=(1.5+4.8)×
,
=6.3×
,
=10.8;
(3)
×
+
÷
,
=(
+
)×
,
=1×
,
=1
;
(4)999
+99
+9
+
,
=(999
+
)+(99
+
)+(9
+
),
=1000+100+10,
=1110.
=2.65×100+2.65,
=265+2.65,
=267.65;
(2)(2.4×
| 5 |
| 8 |
| 3 |
| 4 |
| 12 |
| 7 |
=(1.5+3.6×
| 4 |
| 3 |
| 12 |
| 7 |
=(1.5+4.8)×
| 12 |
| 7 |
=6.3×
| 12 |
| 7 |
=10.8;
(3)
| 5 |
| 8 |
| 11 |
| 10 |
| 3 |
| 8 |
| 10 |
| 11 |
=(
| 5 |
| 8 |
| 3 |
| 8 |
| 11 |
| 10 |
=1×
| 11 |
| 10 |
=1
| 1 |
| 10 |
(4)999
| 8 |
| 9 |
| 8 |
| 9 |
| 8 |
| 9 |
| 1 |
| 3 |
=(999
| 8 |
| 9 |
| 1 |
| 9 |
| 8 |
| 9 |
| 1 |
| 9 |
| 8 |
| 9 |
| 1 |
| 9 |
=1000+100+10,
=1110.
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