题目内容
计算,能简算的一定要简算.
65.5+65.5×99
×[1÷(
+
)]
÷
÷
2.25×1.8+12.5×0.18
2÷
×
÷2.
65.5+65.5×99
| 5 |
| 8 |
| 3 |
| 4 |
| 1 |
| 3 |
| 2 |
| 5 |
| 3 |
| 4 |
| 1 |
| 15 |
2.25×1.8+12.5×0.18
2÷
| 2 |
| 3 |
| 2 |
| 3 |
(1)65.5+65.5×99,
=65.5×(99+1),
=65.5×100,
=6550;
(2)
×[1÷(
+
)],
=
×[1÷
],
=
×
,
=
;
(3)
÷
÷
,
=
×
×15,
=8;
(4)2.25×1.8+12.5×0.18,
=22.5×0.18+12.5×0.18,
=(22.5+12.5)×0.18,
=35×0.18,
=6.3;
(5)2÷
×
÷2,
=2×
×
×
,
=1.
=65.5×(99+1),
=65.5×100,
=6550;
(2)
| 5 |
| 8 |
| 3 |
| 4 |
| 1 |
| 3 |
=
| 5 |
| 8 |
| 13 |
| 12 |
=
| 5 |
| 8 |
| 12 |
| 13 |
=
| 15 |
| 26 |
(3)
| 2 |
| 5 |
| 3 |
| 4 |
| 1 |
| 15 |
=
| 2 |
| 5 |
| 4 |
| 3 |
=8;
(4)2.25×1.8+12.5×0.18,
=22.5×0.18+12.5×0.18,
=(22.5+12.5)×0.18,
=35×0.18,
=6.3;
(5)2÷
| 2 |
| 3 |
| 2 |
| 3 |
=2×
| 3 |
| 2 |
| 2 |
| 3 |
| 1 |
| 2 |
=1.
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