题目内容
4
+3.2+5
+6.8=
25×(8×0.4)×1.25=
7
-(2
-
)=
(
+
+
)×72=
93.5÷3
÷
16÷2.5=.
| 1 |
| 3 |
| 2 |
| 3 |
25×(8×0.4)×1.25=
7
| 4 |
| 15 |
| 4 |
| 15 |
| 1 |
| 23 |
(
| 11 |
| 12 |
| 7 |
| 18 |
| 5 |
| 24 |
93.5÷3
| 1 |
| 2 |
| 2 |
| 7 |
16÷2.5=.
(1)4
+3.2+5
+6.8,
=4
+3
+5
+6
,
=(4
+5
)+(3
+6
),
=10+10,
=20;
(2)25×(8×0.4)×1.25,
=(25×0.4)×(8×1.25),
=10×10,
=100;
(3)7
-(2
-
),
=7
-2
+
,
=5+
,
=5
;
(4)(
+
+
)×72,
=
×72+
×72+
×72,
=66+28+15,
=109;
(5)93.5÷3
÷
,
=93
÷3
÷
,
=93
÷(
×
),
=93
÷1,
=93
;
(6)16÷2.5,
=(16×4)÷(2.5×4),
=64÷10,
=6.4.
| 1 |
| 3 |
| 2 |
| 3 |
=4
| 1 |
| 3 |
| 1 |
| 5 |
| 2 |
| 3 |
| 4 |
| 5 |
=(4
| 1 |
| 3 |
| 2 |
| 3 |
| 1 |
| 5 |
| 4 |
| 5 |
=10+10,
=20;
(2)25×(8×0.4)×1.25,
=(25×0.4)×(8×1.25),
=10×10,
=100;
(3)7
| 4 |
| 15 |
| 4 |
| 15 |
| 1 |
| 23 |
=7
| 4 |
| 15 |
| 4 |
| 15 |
| 1 |
| 23 |
=5+
| 1 |
| 23 |
=5
| 1 |
| 23 |
(4)(
| 11 |
| 12 |
| 7 |
| 18 |
| 5 |
| 24 |
=
| 11 |
| 12 |
| 7 |
| 18 |
| 5 |
| 24 |
=66+28+15,
=109;
(5)93.5÷3
| 1 |
| 2 |
| 2 |
| 7 |
=93
| 1 |
| 2 |
| 1 |
| 2 |
| 2 |
| 7 |
=93
| 1 |
| 2 |
| 2 |
| 7 |
| 7 |
| 2 |
=93
| 1 |
| 2 |
=93
| 1 |
| 2 |
(6)16÷2.5,
=(16×4)÷(2.5×4),
=64÷10,
=6.4.
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