3 / 4 × a few parts = 1.7 × a few parts = 1.9 × a few parts = 1 The edge length of a cube is 3 / 10 meters. Find the surface area and volume of the cube There are 3 / 4 tons of coal in the canteen, and there are 2 / 5 after using part of it. How many tons are left? There are 3 / 4 tons of coal in the canteen. 2 / 5 tons are used. How many tons are left?

3 / 4 × a few parts = 1.7 × a few parts = 1.9 × a few parts = 1 The edge length of a cube is 3 / 10 meters. Find the surface area and volume of the cube There are 3 / 4 tons of coal in the canteen, and there are 2 / 5 after using part of it. How many tons are left? There are 3 / 4 tons of coal in the canteen. 2 / 5 tons are used. How many tons are left?

3 / 4 x 3 / 4 = 17 x 17 / 1 = 19 x 19 / 1 = 1