休閑網(wǎng)

常用的數(shù)量關(guān)系式包括： 1. 每份數(shù)×份數(shù)=總數(shù) 2. 總數(shù)÷每份數(shù)=份數(shù) 3. 總數(shù)÷份數(shù)=每份數(shù) 4. 1倍數(shù)×倍數(shù)=幾倍數(shù) 5. 幾倍數(shù)÷1倍數(shù)=倍數(shù) 6. 幾倍數(shù)÷倍數(shù)=1倍數(shù) ...