1樓:匿名使用者
13.6×
5.8+3.6×4.4-0.72
=(10+3.6)×專5.8+3.
6×4.4-0.72=10×5.
8+3.6×5.8+3.
6×4.4-0.72=58+3.
6×(屬5.8+4.4)-0.
72=58+3.6×10.2-0.
72=58+3.6×(10+0.2)-0.72=58+36+0.72-0.72=94
2樓:匿名使用者
13.6x5.8+3.
6x4.4-0.72=(10+3.
6)x5.8+3.6x4.
4-0.72=10x5.8+3.
6x5.8+3.6x4.
4-0.72=58+(3.6x5.
8+3.6x4.4)-0.
72=58+3.6x(5.8+4.
4)-0.72=58+3.6x10.
2-0.72
=58+3.6x(10+0.2)-0.72=58+3.6x10+3.6x0.2-0.72=58+36+(0.72-0.72)
=94+0=94
3樓:煙暖雨初收樂園
=(10+3.6)*5.8+3.
6*4.4-3.6*0.
2=58+3.6*(5.8+4.
4-0.2)=58+3.6*10=58+36=94
8.7x3.6+13x0.36 5.8x3.65 9.7x(5.83-2.64) 最簡便演算法 脫式計算 求幫忙 急!
4樓:新野旁觀者
8.7x3.6+13x0.36
=8.7x3.6+1.3x3.6
=(dao8.7+1.3)x3.6
=10x3.6
=365.8x3.65
=2.9×
內7.3
=(3-0.1)×容7.3
=3×7.3-0.1×7.3
=21.9-0.73
=21.17
9.7x(5.83-2.64)
=9.7x3.19
=(10-0.3)×3.19
=10×3.19-0.3×3.19
=31.9-0.957
=30.943
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