一百零一乘九十九用三种简便方法计算
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发布时间:2022-05-10 04:27
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热心网友
时间:2023-10-31 19:26
“101*99=?”的三种简便方法:
① 101*99=(100+1)*99=100*99+99=9999
② 101*99=101*(100-1)=101*100-101=9999
③ 101*99=(100+1)*(100-1)=100*100-1=9999
热心网友
时间:2023-10-31 19:27
101x99
=(100+1)x99
=100x99+99
=9900+99
=9999
101x99
=101x(100-1)
=101x100-101
=10100-100-1
=10000-1
=9999
101x99
=(100+1)(100-1)
=100x100-1x1
=10000-1
=9999
热心网友
时间:2023-10-31 19:28
101*99
=(100+1)*99
=100*99+99
=9999
101*99
=101*(100-1)
=10100-101
=9999
101*99
=(100+1)*(100-1)
=100*100+100-100-1
=9999