题目内容
下面各题,能简算的一定要简算
| (
| ||||||||||
36÷[
| (
|
(1)
×1.2+
×1.8,
=
×(1.2+1.8),
=
×3,
=
;
(2)(
+
-
)×12
=(
+
-
)×12,
=
×12+
×12-
×12,
=26+4-11,
=19;
(3)36÷[
+(
-
)],
=36÷[
+(
-
)],
=36÷[
+
],
=36÷
,
=36×
,
=32;
(4)(
)×1.25
=0.5×100×1.25,
=50×1.25,
=62.5;
| 1 |
| 15 |
| 1 |
| 15 |
=
| 1 |
| 15 |
=
| 1 |
| 15 |
=
| 1 |
| 5 |
(2)(
| 13 |
| 6 |
| 1 |
| 3 |
| 11 |
| 12 |
=(
| 13 |
| 6 |
| 1 |
| 3 |
| 11 |
| 12 |
=
| 13 |
| 6 |
| 1 |
| 3 |
| 11 |
| 12 |
=26+4-11,
=19;
(3)36÷[
| 5 |
| 6 |
| 5 |
| 8 |
| 1 |
| 3 |
=36÷[
| 20 |
| 24 |
| 15 |
| 24 |
| 8 |
| 24 |
=36÷[
| 20 |
| 24 |
| 7 |
| 24 |
=36÷
| 27 |
| 24 |
=36×
| 24 |
| 27 |
=32;
(4)(
| ||
| 100 |
=0.5×100×1.25,
=50×1.25,
=62.5;
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