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×（+）=
每个鸡蛋0.45元，这些鸡蛋一共多少钱？
0.9×6= 1.5×0.4= 0.15×0.3= 0.24×2= 3.6×0.2= 0.8×0.6= 1.7×0.2= 0.15×4= 0.23×0.3=
苹果每千克3.5元，买1.5千克，要花多少钱？
用竖式计算． 0.37×2.9 8.45×0.18 0.78×1.05 5.9×3.1．
÷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×（+）=
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