题目内容
脱式计算,能简算的要简算.
24×(
|
|
| ||||||||||||||||||
| 0.25×32×125 | 256-72+2.4. |
(1)24×(
+
+
),
=24×
+24×
+24×
,
=18+8+10,
=36;
(2)
+
-
,
=
-
,
=
;
(3)
÷5+
×
,
=
×
+
×
,
=(
+
)×
,
=1×
,
=
;
(4)
-(
-
),
=
+
-
,
=1-
,
=
;
(5)0.25×32×125,
=0.25×4×8×125,
=(0.25×4)×(8×125),
=1×1000,
=1000;
(6)256-72+2.4,
=184+2.4,
=186.4.
| 3 |
| 4 |
| 1 |
| 3 |
| 5 |
| 12 |
=24×
| 3 |
| 4 |
| 1 |
| 3 |
| 5 |
| 12 |
=18+8+10,
=36;
(2)
| 5 |
| 12 |
| 5 |
| 8 |
| 5 |
| 6 |
=
| 25 |
| 24 |
| 20 |
| 24 |
=
| 5 |
| 24 |
(3)
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 5 |
=
| 1 |
| 4 |
| 1 |
| 5 |
| 3 |
| 4 |
| 1 |
| 5 |
=(
| 1 |
| 4 |
| 3 |
| 4 |
| 1 |
| 5 |
=1×
| 1 |
| 5 |
=
| 1 |
| 5 |
(4)
| 23 |
| 25 |
| 15 |
| 17 |
| 2 |
| 25 |
=
| 23 |
| 25 |
| 2 |
| 25 |
| 15 |
| 17 |
=1-
| 15 |
| 17 |
=
| 2 |
| 17 |
(5)0.25×32×125,
=0.25×4×8×125,
=(0.25×4)×(8×125),
=1×1000,
=1000;
(6)256-72+2.4,
=184+2.4,
=186.4.
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