题目内容
简算
5.61-
+4.39-1
3.74×5.8+62.6×0.58
(
-
)+(
-
)+(
-
)+(
-
)+(
-
)
5.61-
2 |
5 |
3 |
5 |
3.74×5.8+62.6×0.58
(
1 |
2 |
1 |
3 |
1 |
4 |
1 |
5 |
1 |
7 |
1 |
10 |
1 |
14 |
1 |
15 |
1 |
28 |
1 |
30 |
(1)5.61-
+4.39-1
,
=(5.61+4.39)-(
+1
),
=10-2,
=8;
(2)3.74×5.8+62.6×0.58,
=3.74×5.8+6.26×5.8,
=(3.74+6.26)×5.8,
=10×5.8,
=58;
(3)(
-
)+(
-
)+(
-
)+(
-
)+(
-
),
=(
+
+
+
+
)-(
+
+
+
+
),
=
-
,
=1-
,
=
.
2 |
5 |
3 |
5 |
=(5.61+4.39)-(
2 |
5 |
3 |
5 |
=10-2,
=8;
(2)3.74×5.8+62.6×0.58,
=3.74×5.8+6.26×5.8,
=(3.74+6.26)×5.8,
=10×5.8,
=58;
(3)(
1 |
2 |
1 |
3 |
1 |
4 |
1 |
5 |
1 |
7 |
1 |
10 |
1 |
14 |
1 |
15 |
1 |
28 |
1 |
30 |
=(
1 |
2 |
1 |
4 |
1 |
7 |
1 |
14 |
1 |
28 |
1 |
3 |
1 |
5 |
1 |
10 |
1 |
15 |
1 |
30 |
=
28 |
28 |
22 |
30 |
=1-
11 |
15 |
=
4 |
15 |
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