关于比和简算的数学问题.16.2÷0.375-1.2×8/3 (要简算) 4.72+3/40-1.72(要简算)甲是乙的1又3/5倍,乙:甲=( ):( )
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/01 23:46:12
![关于比和简算的数学问题.16.2÷0.375-1.2×8/3 (要简算) 4.72+3/40-1.72(要简算)甲是乙的1又3/5倍,乙:甲=( ):( )](/uploads/image/z/243383-23-3.jpg?t=%E5%85%B3%E4%BA%8E%E6%AF%94%E5%92%8C%E7%AE%80%E7%AE%97%E7%9A%84%E6%95%B0%E5%AD%A6%E9%97%AE%E9%A2%98.16.2%C3%B70.375-1.2%C3%978%2F3+%EF%BC%88%E8%A6%81%E7%AE%80%E7%AE%97%EF%BC%89+4.72%2B3%2F40-1.72%EF%BC%88%E8%A6%81%E7%AE%80%E7%AE%97%EF%BC%89%E7%94%B2%E6%98%AF%E4%B9%99%E7%9A%841%E5%8F%883%2F5%E5%80%8D%2C%E4%B9%99%EF%BC%9A%E7%94%B2%3D%EF%BC%88+%EF%BC%89%EF%BC%9A%EF%BC%88+%EF%BC%89)
关于比和简算的数学问题.16.2÷0.375-1.2×8/3 (要简算) 4.72+3/40-1.72(要简算)甲是乙的1又3/5倍,乙:甲=( ):( )
关于比和简算的数学问题.
16.2÷0.375-1.2×8/3 (要简算) 4.72+3/40-1.72(要简算)
甲是乙的1又3/5倍,乙:甲=( ):( )
关于比和简算的数学问题.16.2÷0.375-1.2×8/3 (要简算) 4.72+3/40-1.72(要简算)甲是乙的1又3/5倍,乙:甲=( ):( )
16.2÷0.375-1.2×8/3 (要简算)
=16.2÷(375/1000)-1.2*8/3
=16.2×8/3-1.2×8/3
=8/3×(16.2-1.2)
=(8/3)×15
=8×5
=40
4.72+3/40-1.72(要简算)
=4.72-1.72+3/40
=3+3/40
=3又3/40
=123/40
甲是乙的1又3/5倍,而1又3/5=8/5,所以 乙:甲=5:8
16.2÷0.375-1.2×8/3 (要简算)
=16.2*8/3-1.2*8/3
=8/3*(16.2-1.2)
=8/3*15
=8*5
=40
4.72+3/40-1.72(要简算)
=4.72-1.72+3/40
=3+3/40
=3又3/40
甲是乙的1又3/5倍,乙:甲=( 8 ):( 5 )
原式=16.2÷3/8-1.2×8/3
=16.2×8/3-1.2×8/3
=8/3(16.2-1.2 )
=8/3×15
=40
原式=4.72-1.72+3/40
=3+3/40
=123/40
甲是乙的1又3/5倍,乙:甲=( 8 ):( 5 )