Toán Lớp 4: Rút gọn. 126/162 ; 325/455 ; 123123/606606 252525/383838 ; 20012001/20022002 ; 141414/282828

Question

Toán Lớp 4:  Rút gọn. 126/162    ; 325/455 ;      123123/606606 252525/383838 ;   20012001/20022002 ; 141414/282828

daolanhoa · Answer

Giải đáp:    325/455 =325:5/455:5=65/91     123123/606606=123123:101/606606:101=123/606     252525/383838 =252525:101010/383838:101010=25/38      20012001/20022002 =20012001:101/20022002:101=2001/2002      141414/282828=141414:707070/282828:707070=2/4=1/2

phuongthuydung · Answer

Giải đáp:       Lời giải và giải thích chi tiết:    126/162=(126&divide;18)/(162&divide;18)=7/9   325/455=(325&divide;65)/(455&divide;65)=5/7   123123/606606=(123123&divide;3003)/(606606&divide;3003)=41/202   252525/383838=(252525&divide;10101)/(383838&divide;10101)=25/38   20012001/20022002=(20012001&divide;10001)/(20022002&divide;10001)=2001/2002   141414/282828=(141414&divide;141414)/(282828&divide;141414)=1/2