×41+0.75
+
×
+
÷[（
+）×
]． 
=37.5%= （填小数）． 
÷
= 
﹣
= 
×
=
+
= 0.52= 9π= 
÷3
=1 
×2=
=
=
20
=28 
=1| A．16.7 | B．33.3 | C．50 | D．66.7 |
A．缩小到原数的 | B．缩小到原数的 |
| C．扩大到原数的100倍 | D．扩大到原数的10倍、 |
×0.15= 
×2= 
×
= 
×
=
÷
= 
÷3= 
÷0.35= 40%+1.4= 
，乙数的倒数是
，甲、乙两数的和的15%是 ． 
= 24÷0.8= 
×
= 1﹣75%= 
+
×4=
= 12.5%×8= 
÷
= 
÷3= 0÷
+
= 
=15： = ：56= %= （填小数） 
×
= 
+
= 
×3= ÷
== 
÷4= 1÷25%= 2﹣3÷4= 
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