计算,能简算的要简算 7.26+3.2÷2.5 14.6-4.6×2.8 0.8+0.8+…+0.8+15×0.2 15个0.8 14.5×10
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解决时间 2021-02-26 22:51
- 提问者网友:回忆在搜索
- 2021-02-26 02:28
计算,能简算的要简算 7.26+3.2÷2.5 14.6-4.6×2.8 0.8+0.8+…+0.8+15×0.2 15个0.8 14.5×102 4.05÷0.5-1.14 9.99×99+9.99.
最佳答案
- 五星知识达人网友:杯酒困英雄
- 2021-02-26 02:54
(1)7.26+3.2÷2.5,
=7.26+1.28,
=8.54;
(2)14.6-4.6×2.8,
=14.6-12.88,
=1.72;
(3)0.8+0.8+…+0.8+15×0.2(15个0.8),
=0.8×15+3,
=0.8×5×3+3,
=12+3,
=15;
(4)14.5×102,
=14.5×(100+2),
=14.5×100+29,
=1450+29,
=1479;
(5)4.05÷0.5-1.14,
=8.1-1.14,
=6.96;
(6)9.99×99+9.99,
=9.99×(99+1),
=99.9×100,
=9990.
=7.26+1.28,
=8.54;
(2)14.6-4.6×2.8,
=14.6-12.88,
=1.72;
(3)0.8+0.8+…+0.8+15×0.2(15个0.8),
=0.8×15+3,
=0.8×5×3+3,
=12+3,
=15;
(4)14.5×102,
=14.5×(100+2),
=14.5×100+29,
=1450+29,
=1479;
(5)4.05÷0.5-1.14,
=8.1-1.14,
=6.96;
(6)9.99×99+9.99,
=9.99×(99+1),
=99.9×100,
=9990.
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