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简算76×101-7658+39+42+614×39×2.5(25×15)×425×42×4125×323.6×97+3.6×34×25+16×2536×45+36×56-3668×10264×15-14×15167+289+3325×64×125378+525+750.4×25×1.6×255×289×279×2.5+2.54.
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(1)76×101-76, =76×(100-1), =76×100, =7600; (2)58+39+42+61, =(58+42)+(39+61), =100+100, =200; (3)4×39×2.5, =39×(4×2.5), =39×10, =390; (4)(25×15)×4, =(25×4)×15, =100×15, =1500; (5)25×42×4, =(25×4)×42, =100×42, =4200; (6)125×32, =125×(4×8), =(125×8)×4, =1000×4, =4000; (7)3.6×97+3.6×3, =3.6×(97+3), =3.6×100, =360; (8)4×25+16×25, =(4+16)×25, =20×25, =500; (9)36×45+36×56-36, =36×(45+56-1), =36×100, =3600; (10)68×102, =68×(100+2), =68×100+68×2, =6800+136, =6935; (11)64×15-14×15, =(64-14)×15, =50×15, =750; (12)167+289+33, =(167+33)+289, =200+289, =489; (13)25×64×125, =25×(8×8)×125, =(25×8)×(8×125), =200×1000, =200000; (14)378+525+75, =378+(525+75), =378+600, =978; (15)0.4×25×1.6×25, =0.4×25×(4×0.4)×25, =(0.4×25)×(4×25)×0.4, =10×100×0.4, =1000×0.4, =400; (16)5×289×2, =289×(5×2), =289×10, =2890; (17)79×2.5+2.5, =(79+1)×2.5, =80×2.5, =200; (18)4.08÷1.25÷0.8, =4.08÷(1.25×0.8), =4.08÷1, =4.08; (19)125×88, =125×(8×11), =(125×8)×11, =1000×11, =11000; (20)87×9.9, =87×(10-0.1), =87×10-87×0.1, =870-8.7, =861.3; (21)101×0.82-0.82, =(100-1)×0.82, =100×0.82, =82; (22)25×97+25×3, =25×(97+3), =25×100, =2500; (23)(125+17)×8, =125×8+17×8, =1000+136, =1136; (24)66×93+93×33+93, =(66+33+1)×93, =100×93, =9300; (25)
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