Divide a cake equally into four parts, which means that three-thirds of the cake is three out of four?

Divide a cake equally into four parts, which means that three-thirds of the cake is three out of four?

Unit 1 here represents the whole cake

A piece of cake is divided into 9 pieces on average. Mother ate 3 pieces, Honghong ate 2 pieces, and father ate 1 / 2 of the rest?

Father ate two ninths of this cake, because mother and Honghong had four pieces left after eating. When father ate 1 / 2, it means that father ate two pieces. When this cake was divided into nine pieces, father ate only two pieces, which is 2 / 9. 2 / 9 means that the unit "1" is divided into nine parts on average, taking two of them. 3 + 2 = 5 (pieces) 9-5 = 4 (pieces) 4 △ 2 = 2 (pieces) 2 △ 9 = two ninths

Divide 3 kg of sugar into 5 parts. How many parts of 3 kg each? How many parts of 1 kg each? How many parts of 1 kg each?

3 kg of sugar is divided into 5 parts on average. Each part is 1 / 5 of 3 kg, 3 / 5 of 1 kg and 3 / 5 of 1 kg