口算下面各题． 0.7+2.8= 7.3﹣0.6= 0.84÷0.2= 0.12×0=0.4×0.05= 0.5÷100= 5.2+3.8= 1.45+5.5=
直接写出得数．+= 1+95%= 35÷42= 50%﹣= （﹣）×=16×3.14= ×= 16÷20%= ：= ×÷×=
计算下列各题，得数化成最简分数．+= += ﹣= +﹣=+= += ﹣= 1﹣﹣=
直接写出得数．+= ﹣= += 1﹣=3+= ﹣= += ﹣=
．
一个数减去，再加上．
+
= 1+95%= 35÷42= 50%﹣
= （
﹣
）×
=
×
= 16÷20%= 
：
= 
×
÷
+
= 
+
= 
﹣
= 
+
﹣
=
= 
+
= 
﹣
= 1﹣
﹣
=
+
= 
﹣
= 
+
= 1﹣
=
= 
﹣
= 
+
= 
=
．
，再加上
．
粤公网安备 44130202000953号