
13×12-26×4+43×7,简便运算?
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13×12-26×4+43×7是一个数学表达式,要进行简便运算,可以按照以下步骤:
先计算括号内的部分,如果有的话。这个表达式没有括号,所以跳过这一步。
再计算乘法和除法,从左到右。这个表达式有三个乘法:13×12=156,26×4=104,43×7=301。
最后计算加法和减法,从左到右。这个表达式有一个减法和一个加法:156-104=52,52+301=353。
所以,13×12-26×4+43×7的简便运算结果是353。
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To simplify this calculation, we can use the order of operations, also known as PEMDAS:
1. Parentheses (or brackets)
2. Exponents (ie Powers and Square Roots, etc.)
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)
Using this rule, we perform multiplication and subtraction before addition:
13×12 - 26×4 + 43×7
= 156 - 104 + 301
Now, we can add and subtract from left to right:
= 52 + 301
= 353
Therefore, the simplified answer is 353.
1. Parentheses (or brackets)
2. Exponents (ie Powers and Square Roots, etc.)
3. Multiplication and Division (from left to right)
4. Addition and Subtraction (from left to right)
Using this rule, we perform multiplication and subtraction before addition:
13×12 - 26×4 + 43×7
= 156 - 104 + 301
Now, we can add and subtract from left to right:
= 52 + 301
= 353
Therefore, the simplified answer is 353.
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(12+1)*12-(25+1)*4+(40+3)*7
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