如题所述
74+99+26×101
=74+26+100-1+26×100
=100+100-1+2600
=2799
所以简便计算的话,可以把99化成100-1,26×101化成26×(100+1)
=74+26+100-1+26×100
=100+100-1+2600
=2799
所以简便计算的话,可以把99化成100-1,26×101化成26×(100+1)
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第1个回答 2020-06-29
74+99+26×101
=74+100-1+26x100+26
=74+26+100-1+2600
=200+2600-1
=2800-1
=2799
望采纳,谢谢
=74+100-1+26x100+26
=74+26+100-1+2600
=200+2600-1
=2800-1
=2799
望采纳,谢谢
第2个回答 2020-06-29
74+99+26×101
=74+100-1+26×100+26
=173+2600+26
=2799
=74+100-1+26×100+26
=173+2600+26
=2799