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1)3/7:30=3/7*1/30=3/210=1/70 часть орехов -белка съедала за 1 день.
3.2*0.35=1.12м8.6*0.35=3.01дм6.4*0.35=2.24см9*0.62=5.58т710*0.62=440.2кг180*0.62=111.6г
252 (2) 48+16 =64
48-16 = 32
64 :32=2
(3) 32*15 = 480
896:28 = 32
480-32 =448
264. (2) 829-329+m= 500+m = 500+700=1200