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如果△是○的6倍,那么正确的算式是( )
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如果圆的半径扩大3倍那么他的面积扩大倍.
3倍
6倍
9倍
如果△是○的6倍那么正确的算式是 A.○÷△=6 B.△×6=○ C.○÷6=△
在一个除法算式中被除数不变且不为0除数缩小10倍那么商
扩大10倍
扩大100倍
缩小10倍
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如果把分式中的x和y都扩大3倍那么分式的值
不变
缩小3倍
扩大6倍
扩大3倍
如果把分式中的ab都扩大为原来的2倍那么分式的值一定
是原来的2倍
是原来的4倍
是原来的
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如果把分式中的x和y都扩大2倍那么分式的值.
不变
扩大2倍
扩大4倍
缩小2倍
在一个除法算式里如果被除数缩小5倍要使商不变除数应该在一个乘法算式里如果一个因数扩大4倍要使积不变
如果x是未知数那么x÷16=9„„7是
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如果△÷□=○那么下面算式正确的是
□÷○=△
○÷△=□
○×□=△
算式59.69÷2.4中两个数的小数点如果都去掉算式的结果
不变
扩大1000倍
扩大10倍
缩小10倍
如果圆的半径扩大3倍那么他的面积扩大倍.
3倍
6倍
9倍
如果把分式中的x和y都扩大3倍那么这个分式的值
扩大3倍
扩大6倍
缩小3倍
不变
如果把分式中的x和y的值都扩大了3倍那么分式的值
扩大3倍
扩大2倍
扩大6倍
不变
如果把分式中的xy都扩大5倍那么分式的值.
不变
扩大5倍
缩小5倍
以上都不正确
如果把分式中的m和n都扩大3倍那么分式的值
不变
扩大3倍
缩小3倍
扩大9倍
如果把分式中的m和n都扩大3倍那么分式的值
不变
扩大3倍
缩小3倍
扩大9倍
在乘法算式里如果一个乘数不变另一个乘数扩大10倍那么积也扩大10倍..判断对错
如果A的功率是B的2倍那么A的功率比B的功率大dB
2
3
4
6
乘法算式A×B如果A增加5B不变则A与B的乘积增加60如果A不变B增加6那么A与B的乘积增加144
如果把分式中的xy都扩大3倍那么分式的值
扩大3倍
不变
缩小3倍
扩大2倍
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