skkn rèn kỹ năng giải toán về tỷ số phần trăm cho hs lớp 5

. ,L%m1sQ X2sN_`:j,L%e0*"#,dO?! .N '#01234 56 7819:;<+,-9=>13?+@1 34/ AB12CD1 56 7819:;+,-9=>1EFG9HI4;JK19LMG30NJN-I4 5 670/ |9GBUC/EN 5 2s>_`1(22xOj_L%=.C'D _`j.*_`6v `:((+1I%&'_`&:. v9(L/,/,d_`:j.C .N omN 5 6(K$%(8+,&mnu1 +&mnu_j,#<$(2D&&' Dv  ^i<N 5 C. .C'D.**y('N mn>uNmsnu}lnu-*y('0  5 *y('ennnn( [%*y.:6N ennnnJlnu}sxnnn( U.CNsxnnn( oxN 54 •i(8D&nu.*(i% 6/D&snu_j*4%8 (8D&&'D.*(i%v ^i<-"m0 @"*<N`C8(83).C+ 6 926.N o6N 4(i%•imnnu 6(i%mnnu 8(8(i%mnnu 94(i%•iN mnnufnu}mnu -54 (i%0 F6/#%N mnnufsnu}msnu-F6(i%0 r8(8#%N mnuNmsnu}msu-8(i%0 X*%*4%8(8D&.C 'D.*(i%N msuAmnnu}su U.CNsu `:%#6*+=.C'D1C:JO* *%8.a