Fraction multiplied by integer: The denominator remains the same, and the multiplication of numerator and integer can reduce the first fraction.
2、
Fraction multiplied by fraction: numerator multiplied by numerator, denominator multiplied by the first reducible fraction of denominator.
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10% discount means that the current price is nine tenths of the original price.
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Length of cuboid = (length+width+height) ×4
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Side length of cube = side length × 12
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Surface area of cuboid = (length× width× height )×1
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Surface area of cube = side length × side length ×6
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Exposed area = side length × side length × number of exposed surfaces
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The calculation method of fractional division: dividing by a number is equal to multiplying the reciprocal of this number (except 0)
10, long hair volume = length× width× height, or bottom area× height is expressed in letters: V = ABH or V = SH.
1 1. Volume of the cube: side length × side length× side length, or low area× height is a cube with the letter v = a.
12, volume refers to the size of the space occupied by the object, measured from the outside, the container refers to the volume of the object that the container can hold, measured from the inside. When the container is thin, the container is similar to the volume.
13, commonly used in unit of volume: cubic meter, cubic decimeter, cubic centimeter, commonly used in unit of volume liters and milliliters.
14. Calculation method of cuboid or cube container volume: It is the same as the calculation method of volume, but the length, width and height should be measured from the inside of the container. Unit of volume is generally used to calculate volume.
15, volume and unit of volume conversion: one cubic meter = 1000 cubic decimeter. One cubic decimeter = 1000 cubic centimeter. One cubic decimeter = one liter. One cubic centimeter = 1 ml. One liter = 1000ml.
16. Calculation method of volume and unit of volume conversion: the route between two adjacent volumes and unit of volume is 1000, which is changed from high-grade unit to low-grade unit, multiplied by the route, and changed from low-grade unit to high-grade unit, divided by the route.