1+= 2﹣=﹣= 1.2×0.01=﹣﹣=÷= 6×=×=÷6= 3÷4+=
直接写出得数． 1﹣9=+0.2=+﹣0.2= 5÷= 3.6×=×1.5=﹣= 1÷=×15= 4.5+= 2.43+4.57=﹣=×1.2= 2.5﹣= 5﹣1﹣1.6=÷= 2×0=（0.18×）÷9= 0.2 5×4=÷= （+）×12=
直接写得数．+=×18=﹣=××8=×=÷6=÷=（+）×24=÷= 24×25% 0÷×÷×=
直接写出得数 0.12======×÷=×÷×=
直接写得数． 9×=÷=÷=÷5÷=÷=×=÷25= 5÷÷= 12÷=﹣=﹣=×÷=
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= 2﹣
=
﹣
= 1.2×0.01=
﹣
﹣
=
÷
= 6×
=
=
÷6= 3÷4+
=
+0.2=
+
﹣0.2= 5÷
=
=
×1.5=
﹣
= 1÷
=
×15= 4.5+
= 2.43+4.57=
=
×1.2= 2.5﹣
= 5﹣1
﹣1.6=
÷
=
×0=（0.18×
）÷9= 0.2 5×4=
÷
=
）×12=
+
=
×18=
﹣
=
×
×8=
×
=
÷6=
÷
=（
+
）×24=
÷
= 24×25% 0÷
×
÷
=
=
=
=
=
=
×
÷
=
×
÷
=
÷
=
÷
=
÷5÷
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÷25= 5÷
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= 12÷
=
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