能简算的要简算:(1)432×99-568(2)1429÷4-(3+5÷9)(3)51×68×78÷(17×34×13)(4)1417×
答案:2 悬赏:50
解决时间 2021-02-15 14:14
- 提问者网友:你在我心中是最美
- 2021-02-15 11:21
能简算的要简算:(1)432×99-568(2)1429÷4-(3+5÷9)(3)51×68×78÷(17×34×13)(4)1417×
最佳答案
- 二级知识专家网友:孤伤未赏
- 2021-02-15 11:31
(1)432×99-568
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;
(2)1429÷4-(3+5÷9)
=1289×14-(3+59),
=329-329,
=0;
(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;
(4)1417×(223-0.75)+1512÷1721.
=2117×(83-34)+312×2117,
=2117×2312+312×2117,
=(2312+312)×2117,
=(2312+18612)×2117,
=20912×2117,
=146368.
=432×(100-1)-568,
=432×100-432-568,
=43200-(432+568),
=43200-1000,
=42200;
(2)1429÷4-(3+5÷9)
=1289×14-(3+59),
=329-329,
=0;
(3)51×68×78÷(17×34×13)
=51×68×78÷17÷34÷13,
=(51÷17)×(68÷34)×(78÷13),
=3×2×6,
=36;
(4)1417×(223-0.75)+1512÷1721.
=2117×(83-34)+312×2117,
=2117×2312+312×2117,
=(2312+312)×2117,
=(2312+18612)×2117,
=20912×2117,
=146368.
全部回答
- 1楼网友:浪者不回头
- 2021-02-15 12:39
支持一下感觉挺不错的
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