Simple algorithm of 3.2*3*1.5

##Simple algorithm for 3.2*3*1.5

The idea is to convert two-digit multiplication into one Multiplication of numbers

3.2×3×1.5
=1.6×2×3×1.5
=1.6×3×(2×1.5)
=4.8×3
=14.4

1. Four mixed operation sequences: When performing operations at the same level, calculations are performed from left to right; when operating at two levels, multiplication and division are calculated first, followed by addition and subtraction. When there are parentheses, the items inside the parentheses are calculated first, and then the items outside the parentheses; when there are multiple levels of parentheses, the items inside the parentheses are calculated first, then the items inside the square brackets, then the items inside the curly brackets, and finally the items outside the parentheses. If there is a power, the power is calculated first.

2. Multiplication is a simple operation of addition, and division is a simple operation of subtraction. Subtraction and addition are the inverse operations of each other, and division and multiplication are the inverse operations of each other. When adding several addends, you can exchange the positions of the addends at will; or add several addends first and then add them to other addends, and their sum will remain unchanged. Subtracting the sum of two numbers from a number is equivalent to subtracting each addend in the sum from the number.

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