Technology innovation information digital currency
take the civil service examination as an example, the mathematical operation method of the quantitative relationship in the examination, such as:
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grouping or elimination method
1) grouping: for each item given in the question, after appropriate division, it can ensure that each group is equal to the same number, then grouping can quickly get the corresponding answer
Elimination: after grouping, the values in each group are all zero, that is, the corresponding items complete a cancellation relationship -
mantissa method
if the last digit of the options is different, the last digit of the original formula will be calculated; If the last two digits of the option are different, the last two digits of the original formula will be calculated
Formula method such as complete square sum difference formula, cubic sum difference formula, square difference formula, etc -
substitution method
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