12345*98765-12344*98766的解法1
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12345*98765-12344*98766的解法1
12345*98765-12344*98766的解法
1
12345*98765-12344*98766的解法1
12345*98765-12344*98766
=12345*98765-(12345-1)*(98765+1)
=12345*98765-12345*98765-12345+98765-1
=98765-12346
= 86419
a*b-(a-1)*(b+1)=ab-ab-a+b+1=-a+b+1=86421
12345*98765-12344*98766的解法1
若A＝12344×98766,B＝12345×98765,比较A和B的大小.
12344×98766与12345×98765的积哪一个大,大多少?
A=12345×98765,B=12344×98766 A减去B等于多少?有简便的方法吗?求教.
987654321×12345-987654322×12344
12345²12344×12346＝?12345²-12344×12346＝?
12345²-12344×123456=
12345²-12344*12346=
123454321/12345*12345-12346*12344=
12345*12345-12344*12346的简便计算
不是123154321除以12345*12345-12346*12344是123454321除以12345*12345-12346*12344
12345*12346-12344*12343 求简便运算
12345*12346-12344*12343简便运算
12345的平方-12344×12346-1
简便计算54321×12345-54322×12344
12345二次方-12344乘12346
12345的2次方-12344×12346=
12345/98761与12346/98765比大小.