第206题:不用计算器判断A和B的大小
A=6.1234×8.7654A=6.1234 \times 8.7654A=6.1234×8.7654
B=6.1244×8.7644B=6.1244 \times 8.7644B=6.1244×8.7644
1、不妨都看成整数
2、A=61234×(87644+10)A= 61234 \times (87644 + 10)A=61234×(87644+10) ;B=(61234+10)×87644B=(61234+10) \times 87644B=(61234+10)×87644