题目内容
下面各题,怎样算简便就怎样算.
| 111×3÷9÷7.4 | 0.125×103-12.5 | ||||
| 0.56×0.7+0.07×5.6. |
(1)111×3÷9÷7.4,
=333÷9÷7.4,
=37÷7.4,
=5;
(2)0.125×103-12.5,
=0.125×103-0.125×100,
=0.125×(103-100),
=0.125×3,
=0.375;
(3)
×999+
,
=
×(999+1),
=
×1000,
=28;
(4)0.56×0.7+0.07×5.6,
=0.392+0.392,
=0.784.
=333÷9÷7.4,
=37÷7.4,
=5;
(2)0.125×103-12.5,
=0.125×103-0.125×100,
=0.125×(103-100),
=0.125×3,
=0.375;
(3)
| 7 |
| 250 |
| 7 |
| 250 |
=
| 7 |
| 250 |
=
| 7 |
| 250 |
=28;
(4)0.56×0.7+0.07×5.6,
=0.392+0.392,
=0.784.
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