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Mathematical knowledge points in Xiaoshengchu: summary of algorithm formula
Xiaoshengchu mathematical algorithm formula

1. additive commutative law;

When two numbers are added, the positions of addends are exchanged, and their sum is unchanged, that is, A+B = B+A.

2. Additive associative law:

Add three numbers, first add the first two numbers, then add the third number; Or add the last two numbers first, and then add the first number, and their sum is unchanged, that is, (a+b)+c=a+(b+c).

3. Multiplicative commutative law;

When two numbers are multiplied, the position of the exchange factor remains the same, that is, a? b=b? Answer.

4. Multiplicative associative law:

Multiply three numbers, first multiply the first two numbers and then multiply the third number; Or multiply the last two numbers first, and then multiply them with the first number, and their products remain the same, that is, (a? b)? c=a? (b? C) carry out the test.

5. Multiplicative distribution law:

When the sum of two numbers is multiplied by a number, you can multiply the two addends by this number and then add the two products, that is, (a+b)? c=a? c+b? C.

Mathematical knowledge points in Xiaoshengchu: algorithm formula

1. additive commutative law;

When two numbers are added, the positions of addends are exchanged, and their sum is unchanged, that is, A+B = B+A.

2. Additive associative law:

Add three numbers, first add the first two numbers, then add the third number; Or add the last two numbers first, and then add the first number, and their sum remains the same, that is, (a+b)+c=a+(b+c).

3. Multiplicative commutative law;

When two numbers are multiplied, the position of the exchange factor remains the same, that is, a? b=b? Answer.

4. Multiplicative associative law:

Multiply three numbers, first multiply the first two numbers and then multiply the third number; Or multiply the last two numbers first, and then multiply them with the first number, and their products remain the same, that is, (a? b)? c=a? (b? C) carry out the test.

5. Multiplicative distribution law:

When the sum of two numbers is multiplied by a number, you can multiply the two addends by this number and then add the two products, that is, (a+b)? c=a? c+b? C.