如题所述
简便计算:
99×73
=100×73-73
=7300-73
=7227
56×99+56
=56×(99+1)
=56×100
=5600
脱式计算:
265-468÷26×12
=265-18×12
=265-216
=49
(望采纳,谢谢)
99×73
=100×73-73
=7300-73
=7227
56×99+56
=56×(99+1)
=56×100
=5600
脱式计算:
265-468÷26×12
=265-18×12
=265-216
=49
(望采纳,谢谢)
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第1个回答 2012-06-10
99×73
=(100-1)*73
=7300-73
=7227
56×99+56
=56*(99+1)
=5600
265-468÷26×12
=265-18*12
=265-216
=49
=(100-1)*73
=7300-73
=7227
56×99+56
=56*(99+1)
=5600
265-468÷26×12
=265-18*12
=265-216
=49
第2个回答 2012-06-10
99*73=(100-1)*73=100*73-73=7227
56*99+56=56*(99+1)=5600
265-468/26*12=265-18*12=265-216=49
56*99+56=56*(99+1)=5600
265-468/26*12=265-18*12=265-216=49
第3个回答 2012-06-10
99×73 l 56×99+56 l 265-468÷26×12
=(100-1)×73 l =56×99+56×1 l =265-18×12
=100×73-1×73 l =56×(99+1) l =265-216
=7300-73 l =56×100 l =49
=7227 l =5600
=(100-1)×73 l =56×99+56×1 l =265-18×12
=100×73-1×73 l =56×(99+1) l =265-216
=7300-73 l =56×100 l =49
=7227 l =5600