一个四边形的广场，它的四边长分别是60米，72米，96米，84米．现在要在四边上植树，如果四边上每两树的间隔距离都相等，那么至少要种多少棵树？
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×1= 52﹣42= 0.75﹣0.5=×=÷= 125×0.08= 0.5+0.02=÷=÷= 0.15×6= 12÷0.3= 0÷=
直接写得数．×16= 12÷= 24×=×÷= 1÷=÷15=÷=×÷×=
直接写得数． 10÷=÷=×= 55×÷=×2= 1÷=÷= 0×+=
口算我最棒= 26×======= 6.4÷20%= 125%×8=
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×1= 52﹣42= 0.75﹣0.5=
=
÷
= 125×0.08=
÷
= 0.15×6= 12÷0.3= 0÷
=
×16= 12÷
= 24×
=
×
÷
=
÷15=
÷
=
×
÷
×
=
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÷
=
= 55×
÷
=
×2= 1÷
=
÷
= 0×
+
=
= 26×
=
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= 6.4÷20%= 125%×8=
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