Mathematics
Junior High

なぜ、(1)は有効数字に0が入らないのに、(2)は0が入っているのですか?

ee (?② 460g =Z2h (1) あの90=979x100o (2②) き60=60x1oo 有効数字ゴ 2 29x1y 有効数字 4 60x 10 借2.79x10m 代 4.60x10'g E値を, 有効数字 3 けたで表しなさい。 (2) 570cm

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