7 06 2 4 5 7怎麼脫式計算

2021-03-17 01:33:00 字數 1133 閱讀 9903

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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