题目内容
脱式计算(能简算的要简算) (
| (1-
| ||||||||||||
1.25+
| 3.64÷4+4.36×25% |
(1)(
+
-
)×4×5,
=
×4×5+
×4×5-
×4×5,
=5+4-6,
=3;
(2)(1-
×
)÷
,
=(1-
)÷
,
=
÷
,
=
×
,
=1
;
(3)1.25+
-
-
,
=1.25+0.75-(
+
),
=2-
,
=1
;
(4)3.64÷4+4.36×25%,
=3.64×
+4.36×
,
=(3.64+4.36)×
,
=8×
,
=2.
1 |
4 |
1 |
5 |
3 |
10 |
=
1 |
4 |
1 |
5 |
3 |
10 |
=5+4-6,
=3;
(2)(1-
3 |
4 |
5 |
12 |
9 |
16 |
=(1-
5 |
16 |
9 |
16 |
=
11 |
16 |
9 |
16 |
=
11 |
16 |
16 |
9 |
=1
2 |
9 |
(3)1.25+
3 |
4 |
12 |
19 |
5 |
19 |
=1.25+0.75-(
12 |
19 |
5 |
19 |
=2-
17 |
19 |
=1
2 |
19 |
(4)3.64÷4+4.36×25%,
=3.64×
1 |
4 |
1 |
4 |
=(3.64+4.36)×
1 |
4 |
=8×
1 |
4 |
=2.
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