用简便算法计算。 1/15×(1/3+1/2) 1/3+3÷1/2 =
用简便算法计算。1/15×(1/3+1/2)1/3+3÷1/2======1/4÷(3-5/13-8/13)===0.5×(3/5+6/25)===...
用简便算法计算。
1/15×(1/3+1/2) 1/3+3÷1/2
= =
= =
= =
1/4÷(3-5/13-8/13)
=
=
=
0.5×(3/5+6/25)
=
=
= 展开
1/15×(1/3+1/2) 1/3+3÷1/2
= =
= =
= =
1/4÷(3-5/13-8/13)
=
=
=
0.5×(3/5+6/25)
=
=
= 展开
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