这4袋洗衣粉共重多少克？用去后，还剩下几分之几？
直接写出得数．=== 5.6÷4= 3.4﹣8====
直接写出得数=== 3×===== 8×==
直接写出得数．=====×+=﹣=+=
直接写数对又快： 1÷=+=÷=（﹣）×18=÷3=×=﹣=×÷×=
5.8+3=×= 6÷= 1÷﹣÷1= 2×10= 1÷3= 0.66÷= 1÷1+= 9÷3= 1÷0.8= 5.4×=×0.7+0.3=
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后，还剩下几分之几？
=
=
= 5.6÷4=
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=
=
=
=
= 3×
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=
=
=
=
=
=
=
=
=
=
=
×
+
=
﹣
=
+
=
=
+
=
÷
=（
﹣
）×18=
÷3=
×
﹣
=
×
÷
=
=
×
= 6÷
= 1÷
﹣
÷1= 2
=
= 1
÷1+
÷3= 1
÷0.8= 5.4×
=
×0.7+0.3=