1樓:
脫式計算:
7.06×2.4-5.7
= 16.944-5.7
=11.244
等於十一點二四四。在
遞等式計算,寫出必要的計算過程,能簡便計算的用簡便方法計算:(1)7.06×2.4-5.7 (2)5.4×99+5.4
2樓:百度使用者
(1)7.06×
2.4-5.7,
=16.944-5.7,
=11.244;
(2)5.4×99+5.4,
=5.4×(99+1),
=5.4×100,
=540;
(3)9.6×72+9.6×28,
=9.6×(72+28),
=9.6×100,
=960;
(4)(1.25×2.5)×4,
=1.25×(2.5×4),
=1.25×10,
=12.5;
(5)10.4+72×0.81,
=10.4+58.32,
=68.72;
(6)11×0.6×0.4,
=6.6×0.4,
=2.64;
(7)(12.8+4.99)÷0.2,
=17.79÷0.2,
=88.95;
(8)1.25×8+2.5×4.4,
=10+2.5×0.4×11,
=10+11,
=21.
7.06×2.4-5.7脫式汁算是什麼?20分
3樓:風吹o_o涼
7.06×2.4-5.7
=(7+0.06)×2.4 -5.7
=7×2.4 + 6×2.4÷100 - 5.7=16.8 + 0.144 - 5.7
=11.244
7.06✖️2.4➖5.7的簡算方法?
4樓:小小曹老師
7.06×2.4-5.7
=7.06×4×0.6-5.7
=282.4×0.6-5.7
=169.44-5.7
=163.74
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