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1.1/7×8-5÷72.(11/12-2/5×3/4)÷7/153.2/3÷4/5-2/3×4/54.3.75*(4/5+8/95÷20/19)要算式与简便计算越快越好是4道记着简便与算式
题目详情
1.1/7×8-5÷7 2.(11/12-2/5×3/4)÷7/15
3.2/3÷4/5-2/3×4/5 4.3.75*(4/5+8/95÷20/19)
要算式与简便计算越快越好
是4道 记着简便与算式
3.2/3÷4/5-2/3×4/5 4.3.75*(4/5+8/95÷20/19)
要算式与简便计算越快越好
是4道 记着简便与算式
▼优质解答
答案和解析
1.1/7×8-5÷7
=8/7-5/7
=3/7
2.(11/12-2/5×3/4)÷7/15
=(11/12-3/10)÷7/15
=37/60 ÷7/15
=37/28
3.2/3÷4/5-2/3×4/5
=2/3×5/4-2/3×4/5
=2/3×(5/4-4/5)
=2/3×9/20
=3/10
4.3.75*(4/5+8/95÷20/19)
=15/4*(4/5+2/25)
=15/4*22/25
=33/10
=3.3
=8/7-5/7
=3/7
2.(11/12-2/5×3/4)÷7/15
=(11/12-3/10)÷7/15
=37/60 ÷7/15
=37/28
3.2/3÷4/5-2/3×4/5
=2/3×5/4-2/3×4/5
=2/3×(5/4-4/5)
=2/3×9/20
=3/10
4.3.75*(4/5+8/95÷20/19)
=15/4*(4/5+2/25)
=15/4*22/25
=33/10
=3.3
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