题目内容
脱式计算(能简算的要简算)
| (1)10.2×43 | (2)3.64÷4+4.36×25% | (3)[
|
(1)10.2×43,
=(10+0.2)×43,
=10×43+0.2×43,
=430+8.6
=438.6;
(2)3.64÷4+4.36×25%,
=3.64×
+4.36×
,
=(3.64+4.36)×
,
=8×
,
=2;
(3)[
-(
+
)]×
,
=[
-
]×
,
=
×
,
=
.
=(10+0.2)×43,
=10×43+0.2×43,
=430+8.6
=438.6;
(2)3.64÷4+4.36×25%,
=3.64×
| 1 |
| 4 |
| 1 |
| 4 |
=(3.64+4.36)×
| 1 |
| 4 |
=8×
| 1 |
| 4 |
=2;
(3)[
| 5 |
| 6 |
| 2 |
| 5 |
| 1 |
| 3 |
| 5 |
| 7 |
=[
| 5 |
| 6 |
| 11 |
| 15 |
| 5 |
| 7 |
=
| 1 |
| 10 |
| 5 |
| 7 |
=
| 1 |
| 14 |
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