题目内容
| 怎样算简便就怎样算. 4.3+5.4-6.8 | 15.17-6.8-3.2 |
| 12.75-(2.75+6.8) | 1.27+3.9+0.73+16.1. |
(1)4.3+5.4-6.8,
=9.7-6.8,
=2.9;
(2)15.17-6.8-3.2,
=15.17-(6.8-3.2),
=15.17-10,
=5.17;
(3)12.75-(2.75+6.8),
=12.75-2.75-6.8,
=10-6.8,
=3.2;
(4)1.27+3.9+0.73+16.1,
=(1.27+0.73)+(3.9+16.1),
=2+20,
=22.
=9.7-6.8,
=2.9;
(2)15.17-6.8-3.2,
=15.17-(6.8-3.2),
=15.17-10,
=5.17;
(3)12.75-(2.75+6.8),
=12.75-2.75-6.8,
=10-6.8,
=3.2;
(4)1.27+3.9+0.73+16.1,
=(1.27+0.73)+(3.9+16.1),
=2+20,
=22.
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