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5.5x5%1.1x15的简便方法

5.5×5-1.1×15 =5.5×(5-3) =5.5×2 =11

这是altium designer里对该种封装的Description: Capacitor, Electrolytic, Radial; Body 5 x 5 mm (Dia.xH typ); Pin Spacing 5 mm (typ) 圆形电解电容;本体5*5mm,就是直径5mm了;引脚距离5mm

这种一般是找相除得整数的,后面好计算 但此题只能简便一点,因为8.5和5.1都是1.7的整数倍,没有1.3的整数倍 =(8.5÷1.7)×5.1÷1.3 =5×5.1÷1.3 =255/13

5.5×5.8+5.2x5.5-5.5 =5.5×(5.8+5.2-1) =5.5×10 =55

(5.7+2.3)*5.5=44

5.5x17.3+6.7x5.5 =5.5x(17.3+6.7) =5.5x24 =132

550(5X5)的简便计算 550÷(5*5) =550÷5÷5 =110÷5 =22

第n个算式(n为正整数)应表示为 (10n-5)x(10n-5)=nx(n+1)x100+25

4.5x4.6+4.6x5.5 =4.6*(4.5+5.5) =4.6*10 =46

48X15一48x5的简便算法 48X15一48x5 =48×(15-5)(乘法分配律的逆运用) =48×10 =480

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