题目内容
| 能简算的要简算: 6.17×3.4+3.4×3.83 | (
| (
| ||||||||||||||||||
|
| 231÷231
|
(1)6.17×3.4+3.4×3.83,
=3.4×(6.17+3.83),
=3.4×10,
=34;
(2)(
-
)×42,
=
×42-
×42,
=35-18,
=17;
(3)(
+
)×29×23,
=(
+
)×(29×23),
=[
×(29×23)]+[
×(29×23)],
=[(
×29)×23]+[(
×23)×29],
=[2×23]+[3×29],
=46+87,
=133;
(4)
÷[
÷(
-
)],
=
÷[
÷
],
=
÷
,
=
;
(5)
÷[(
+
)×
],
=
÷[
×
],
=
÷
,
=
;
(6)231÷231
,
=231÷(231+
),
=231÷(231×1+231×
),
=231÷[231×(1+
)],
=1÷(1+
),
=1÷
,
=
.
=3.4×(6.17+3.83),
=3.4×10,
=34;
(2)(
| 5 |
| 6 |
| 3 |
| 7 |
=
| 5 |
| 6 |
| 3 |
| 7 |
=35-18,
=17;
(3)(
| 2 |
| 29 |
| 3 |
| 23 |
=(
| 2 |
| 29 |
| 3 |
| 23 |
=[
| 2 |
| 29 |
| 3 |
| 23 |
=[(
| 2 |
| 29 |
| 3 |
| 23 |
=[2×23]+[3×29],
=46+87,
=133;
(4)
| 5 |
| 6 |
| 1 |
| 6 |
| 3 |
| 4 |
| 2 |
| 3 |
=
| 5 |
| 6 |
| 1 |
| 6 |
| 1 |
| 12 |
=
| 5 |
| 6 |
| 1 |
| 2 |
=
| 5 |
| 3 |
(5)
| 4 |
| 25 |
| 2 |
| 5 |
| 1 |
| 3 |
| 9 |
| 11 |
=
| 4 |
| 25 |
| 11 |
| 15 |
| 9 |
| 11 |
=
| 4 |
| 25 |
| 3 |
| 5 |
=
| 4 |
| 15 |
(6)231÷231
| 231 |
| 232 |
=231÷(231+
| 231 |
| 232 |
=231÷(231×1+231×
| 1 |
| 232 |
=231÷[231×(1+
| 1 |
| 232 |
=1÷(1+
| 1 |
| 232 |
=1÷
| 233 |
| 232 |
=
| 232 |
| 233 |
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