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≈是什么意思计算

更新时间: 2020-10-29 00:00:00     

“≈”叫做“约等号”,用来表示两个数近似相等的符号。“≈”是常见的写法,还有一种写法是等号上面加一点,下面加一点,即“≒”,读作约等于或近似于。约等号的具体应用:如把398000写成用万作单位的数是“398000=39.8万”,改换计数单位而不改变数值大小时用等号。如果39.8万需保留整数,则原数值的大小有了变化,所以要用约等号,可写成“39.8万≈40万”

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