题目内容
| 脱式计算.(能简算的要简算) (
| (
| ||||||||||||
| 1.25×38+125%×3-5÷4. |
(1)(
+
-
)×24,
=24×
+
×24-
×24,
=18+12-14,
=30-14,
=16;
(2)(
×
)×1
,
=
×(
×1
),
=
×1,
=
;
(3)
÷(
÷
+
),
=
÷(
+
),
=
÷
,
=
;
(4)1.25×38+125%×3-5÷4,
=1.25×38+1.25×3-1.25,
=1.25×(38+3-1),
=1.25×40,
=50.
| 3 |
| 4 |
| 1 |
| 2 |
| 7 |
| 12 |
=24×
| 3 |
| 4 |
| 1 |
| 2 |
| 7 |
| 12 |
=18+12-14,
=30-14,
=16;
(2)(
| 5 |
| 12 |
| 3 |
| 4 |
| 1 |
| 3 |
=
| 5 |
| 12 |
| 3 |
| 4 |
| 1 |
| 3 |
=
| 5 |
| 12 |
=
| 5 |
| 12 |
(3)
| 15 |
| 16 |
| 5 |
| 12 |
| 5 |
| 8 |
| 3 |
| 8 |
=
| 15 |
| 16 |
| 2 |
| 3 |
| 3 |
| 8 |
=
| 15 |
| 16 |
| 25 |
| 24 |
=
| 9 |
| 10 |
(4)1.25×38+125%×3-5÷4,
=1.25×38+1.25×3-1.25,
=1.25×(38+3-1),
=1.25×40,
=50.
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