计算下面各题。(能简算的要简算)
1/3×5×2/5÷1/3 1/3×1/15+1/3×1/5 3.7×6/5+1.3÷5/6
[3/4-(7/16-0.25)]×17/9
你敢,很高兴为您解答:
1、解:
原式=5×2/5×1/3÷1/3
=5×2/5×1/3×3
=2×1
=2
2、解:
原式
=1/3×(1/15+1/5)
=1/3×4/15
=4/45
3、解:
原式
=3.7×6/5+1.3×6/5
=(3.7+1.3)×6/5
=5×6/5
=6
4、解:
原式=
3/4-(6/7-1/4)×17/9
=(3/4+1/4-7/16)×17/9
=9/16×17/9
17/16追答
1、解:
原式=5×2/5×1/3÷1/3
=5×2/5×1/3×3
=2×1
=2
2、解:
原式
=1/3×(1/15+1/5)
=1/3×4/15
=4/45
3、解:
原式
=3.7×6/5+1.3×6/5
=(3.7+1.3)×6/5
=5×6/5
=6
4、解:
原式=
3/4-(6/7-1/4)×17/9
=(3/4+1/4-7/16)×17/9
=9/16×17/9
17/16追答
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