画出一个梯形，并画出它的一条高．
6×=+=×= 3﹣=÷= 1÷=÷=﹣=×14=÷12=
直接写出得数．== 71.83÷8≈ 5.04×9.85≈=== 0.53=
直接写得数======= 60×60%= 2×32==
直接写出得数．×8=÷2=×=÷=÷=﹣0.6=×=÷10=+=÷= 16×= 1﹣7%=
直接写得数． 1÷=÷2= 4×20%=×4= （+）×12= 1÷75%= 1%÷10%= 42%﹣0.42=
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+
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×
= 3﹣
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÷
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÷
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﹣
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×14=
÷12=
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= 71.83÷8≈ 5.04×9.85≈
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= 0.53=
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= 60×60%= 2×32=
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×8=
÷2=
×
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÷
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÷
×
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÷10=
+
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= 16×
= 1﹣7%=
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÷2= 4×20%=
×4=
+
）×12= 1÷75%= 1%÷10%= 42%﹣0.42=