What are the rules for the conversion of elementary school mathematics?

Divide 36 45 to get 4 5, observe this number, multiply the numerator by 8 to get 32, so multiply the 4 5 numerator and denominator by 8 at the same time to get 32 40, that is, the obtained is 40

The way to do this is to observe the simultaneous change of the numerator and denominator.

36/45 equal to 32 divided by what? Obviously, this 32 is the dividend, and 36/45 is the quotient, the one that asks: "Divide by how much?" "It's definitely the divisor. Then dividing the dividend by the quotient is equal to the divisor.

36/45 equal to 32 divided by what?

This shows that 32 is the dividend, 36 45 quotient, ask the divisor.

The positions of the quotient and the divisor can be swapped to obtain: 32 36 45 = 40 Answer: 36 out of 45 is equal to 32 divided by 40.

1. It's easy for me to make mistakes. So. You know.

2, 36/45=32/x

4/5=32/x

x=40

This is the content of the chapter on the meaning of fractions in the second volume of five years.

36/45 of the numerator and denominator while divided by 9 simplification equals four-fifths.

The numerator and denominator multiplied by 8 at the same time equals 32/40

This is according to the basic nature of fractions, the numerator and denominator of fractions are multiplied or divided by the same number at the same time, except for zero, the magnitude of the fraction does not change. ））

According to the relationship between fractions and division, 32/40, can be written as 32 40

36/45 is equal to 32 divided by 40 because the divisor is equal to the quotient divided by the dividend.

The solution for elementary school students should be simplified by fractions - 36 45 = 4 5 (with the numerator and denominator reduced to 9).

Because the two fractional values are equal, that is, the number to which 32 is divided (i.e., the denominator of the fraction can be reduced to 4 5 as well as 32).

So let's find it now: 32 = 4*8 This is the decomposition of the molecule (note that the molecule - 4 is close to each other in the result of the sum differentiation short).

Number on the numerator * 8 = 32

Then the denominator should also be from the simplest 5*8=40

So the answer is 40

1. Derivation of the area formula of the parallelogram: transform the parallelogram into a rectangle. Derivation of the triangle area formula:

Combine two identical triangles into a parallelogram. Derivation of the formula for the area of a circle: Transform a circle into an approximate rectangle.

Derivation of the cylinder volume formula: Transform the cylinder into a cube.

2. Conversion between ratio, division, fraction, decimals, and percentages.