一个篮球85元，用1200元钱购买15个同样的篮球，钱够吗？如果不够的话，还要准备多少钱？
直接写出得数3×= ×= ×18= ×= = ÷= ÷= 3×= ．
直接写得数．= = = == = = =
12+9.9= 1÷0.25= ÷=×50%= ﹣= （0.75﹣）×96=
直接写得数．+= 6÷= ÷4= 2×=÷5= 24÷= ×= ÷=×24= ×= ÷= ×=
﹣= ÷12= 15×=36÷= += ×12=÷= ×=
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×
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×18= 
×
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= 
÷
= 
÷
= 3×
= ．
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=
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= 
= 
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÷
=
×50%= 
﹣
= （0.75﹣
）×96=
+
= 6÷
= 
÷4= 2×
÷5= 24÷
= 
×
= 
÷
×
= 
÷
= 
×
=
﹣
= 
÷12= 15×
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+
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÷
= 
×
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