直接写得数．①10﹣4.7= ②÷5.25= ③÷= ④1÷= ⑤4÷9×=⑥3.5÷40= ⑦+6.25= ⑧0.74×100= ⑨12.2+8%= ⑩15×（+）=
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．
÷5.25= ③
÷
= ④1÷
= ⑤4÷9×
=
+6.25= ⑧0.74×100= ⑨12.2+8%= ⑩15×（
+
）=÷5.25= ③÷= ④1÷= ⑤4÷9×=+6.25= ⑧0.74×100= ⑨12.2+8%= ⑩15×（+）=
+
= 1+95%= 35÷42= 50%﹣
=（
﹣
）×
=
×
= 16÷20%=
：
=
×
÷
+
=
+
=
﹣
=
+
﹣
=
=
+
=
﹣
= 1﹣
﹣
=
+
=
﹣
=
+
= 1﹣
=
=
﹣
=
+
=
=
．
，再加上
．
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