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99 0.25简便计算

99*0.25=100-1*0.25=100*0.25-0.25=25-0.25=24.75

99*0.25=(100-1)*0.25=100*0.25-1*0.25=25-0.25=24.75

99/0.25/0.4=99/(0.25x0.4)=99/0.1=990如有帮助请采纳,如对本题有疑问可追问,Good luck!

(1001)*0.25=100*0.251*0.25=250.25=24.75

(1)99-9.9÷0.25÷0.4,=99-9.9÷(0.25*=99-9.9÷0.1,=99-99,=0;(2)101*0.59,=(100+1)*0.59,=100*0.59+0.59,=59+0.59,=59.59;(3)(+-)÷,=()*6,=6+1 2 *6?1 12 *6,=+3?1 2 ,=3.

99*25=(100-1)*25=100*25-1*25=2500-25=2475

①0.75*4*0.25*4,=0.75*(4*0.25)*4,=0.75*1*4,=3;②9.6+9.9*99,=9.6+980.1,=989.7;③15.58÷8.2-0.72,=1.9-0.72,=1.18;④4.536÷0.8÷14,=5.67÷14,=0.405;⑤2.8*3.6+1.4*2.8,=(3.6+1.4)*2.8,=5*2.8,=14;⑥6.3*10.1,=6.3*(10+0.1),=6.3*10+6.3*0.1,=63+0.63,=63.63.

99*0.25*1/4=99*(1/4*1/4)=99*1/16=6又16分之3

0.25*99+0.25=0.25*(99+1)=0.25*100=25

=0.25*99+0.25*1

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