题目内容
能简算的要简算.
(1)
×
+
÷
(2)1.25×32×2.5
(3)360÷[56×(
-
)]
(4)24×(
+
)
(1)
| 3 |
| 4 |
| 7 |
| 8 |
| 1 |
| 8 |
| 4 |
| 3 |
(2)1.25×32×2.5
(3)360÷[56×(
| 3 |
| 7 |
| 3 |
| 8 |
(4)24×(
| 3 |
| 8 |
| 5 |
| 6 |
(1)
×
+
÷
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(2)1.25×32×2.5,
=1.25×8×4×2.5,
=(1.25×8)×(4×2.5),
=10×10,
=100;
(3)360÷[56×(
-
)],
=360÷[56×
-56×
],
=360÷[24-21],
=360÷3,
=120;
(4)24×(
+
),
=24×
+24×
,
=9+20,
=29.
| 3 |
| 4 |
| 7 |
| 8 |
| 1 |
| 8 |
| 4 |
| 3 |
=
| 3 |
| 4 |
| 7 |
| 8 |
| 1 |
| 8 |
| 3 |
| 4 |
=(
| 7 |
| 8 |
| 1 |
| 8 |
| 3 |
| 4 |
=1×
| 3 |
| 4 |
=
| 3 |
| 4 |
(2)1.25×32×2.5,
=1.25×8×4×2.5,
=(1.25×8)×(4×2.5),
=10×10,
=100;
(3)360÷[56×(
| 3 |
| 7 |
| 3 |
| 8 |
=360÷[56×
| 3 |
| 7 |
| 3 |
| 8 |
=360÷[24-21],
=360÷3,
=120;
(4)24×(
| 3 |
| 8 |
| 5 |
| 6 |
=24×
| 3 |
| 8 |
| 5 |
| 6 |
=9+20,
=29.
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