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计算下面各题,能简算的要简算 480+27×8 &nb...
计算下面各题,能简算的要简算480+27×815.7-2.17-1.8346×101-46(56-13)×(58÷14)24×(14+16-13)[1-(38+14)]÷...
计算下面各题,能简算的要简算 480+27×8 15.7-2.17-1.83 46×101-46 (56-13)×(58÷14) 24×(14+16-13) [1-(38+14)]÷14.
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(1)480+27×8
=480+216
=696;
(2)15.7-2.17-1.83
=15.7-(2.17+1.83)
=15.7-4
=11.7;
(3)46×101-46
=46×(101-1)
=46×100
=4600;
(4)(
-
)×(
÷
)
=
×
=
;
(5)24×(
+
-
)
=24×
+24×
-24×
=6+4-8
=10-8
=2;
(6)[1-(
+
)]÷
=[1-
]÷
=
÷
=
.
=480+216
=696;
(2)15.7-2.17-1.83
=15.7-(2.17+1.83)
=15.7-4
=11.7;
(3)46×101-46
=46×(101-1)
=46×100
=4600;
(4)(
5 |
6 |
1 |
3 |
5 |
8 |
1 |
4 |
=
1 |
2 |
5 |
2 |
=
5 |
4 |
(5)24×(
1 |
4 |
1 |
6 |
1 |
3 |
=24×
1 |
4 |
1 |
6 |
1 |
3 |
=6+4-8
=10-8
=2;
(6)[1-(
3 |
8 |
1 |
4 |
1 |
4 |
=[1-
5 |
8 |
1 |
4 |
=
3 |
8 |
1 |
4 |
=
3 |
2 |
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