题目内容
计算题:(能简算的要简算)
(1)(3.8+
)-(
+2.4÷2
)
(2)(2
-2.625)÷0.5%
(3)1.9×5-(2.5+1
)
(4)6
×1.2+1×3
(5)(3
-1
)÷3
+5
.
(1)(3.8+
| 1 |
| 2 |
| 3 |
| 5 |
| 2 |
| 3 |
(2)(2
| 7 |
| 8 |
(3)1.9×5-(2.5+1
| 2 |
| 7 |
(4)6
| 1 |
| 3 |
| 2 |
| 3 |
(5)(3
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
(1)(3.8+
)-(
+2.4÷2
)
=4.3+1.5,
=5.8;
(2)(2
-2.625)÷0.5%
=0.25÷0.005
=50;
(3)1.9×5-(2.5+1
)
=9.5-3
,
=9
-3
,
=5
;
(4)6
×1.2+1×3
=7.6+3
,
=7
+3
,
=11
;
(5)(3
-1
)÷3
+5
,
=1
÷3
+5
,
=
×
+5
,
=
+5
,
=6.
| 1 |
| 2 |
| 3 |
| 5 |
| 2 |
| 3 |
=4.3+1.5,
=5.8;
(2)(2
| 7 |
| 8 |
=0.25÷0.005
=50;
(3)1.9×5-(2.5+1
| 2 |
| 7 |
=9.5-3
| 11 |
| 14 |
=9
| 1 |
| 2 |
| 11 |
| 14 |
=5
| 5 |
| 7 |
(4)6
| 1 |
| 3 |
| 2 |
| 3 |
=7.6+3
| 2 |
| 3 |
=7
| 3 |
| 5 |
| 2 |
| 3 |
=11
| 4 |
| 15 |
(5)(3
| 1 |
| 4 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=1
| 3 |
| 4 |
| 1 |
| 2 |
| 1 |
| 2 |
=
| 7 |
| 4 |
| 2 |
| 7 |
| 1 |
| 2 |
=
| 1 |
| 2 |
| 1 |
| 2 |
=6.
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