题目内容
| 正确合理的进行计算. 54-5.81×0.9 | 0.65×6.4-0.65×5.4 | 78÷0.25÷0.4. |
(1)54-5.81×0.9,
=54-5.229,
=48.771;
(2)0.65×6.4-0.65×5.4,
=0.65×(6.4-5.4),
=0.65×1,
=0.65;
(3)78÷0.25÷0.4,
=78÷(0.25×0.4),
=78÷0.1,
=780.
=54-5.229,
=48.771;
(2)0.65×6.4-0.65×5.4,
=0.65×(6.4-5.4),
=0.65×1,
=0.65;
(3)78÷0.25÷0.4,
=78÷(0.25×0.4),
=78÷0.1,
=780.
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