四年级下册数学同步练习-2单元6课时 求近似数-苏教版
http://t.cn/Ri466E4苏教版小学数学四年级下册《求近似数》同步练习及参考答案一、迭择1.读50800304这个数时,()A.只读一个零B.只读两个零C.读三个零2.最接近30万的数是( )A.292000B.302000C.3002003.把一个数改写成以万位为单位的数,这个数与原数比,( )A.变大了B.变小了C.不变4.写成用“亿”作单位的近似数,结果是100亿的数是( )A.1010000000B.10069430000C.99705000005.下面三个数中最接近10亿的数是( )A.10.1亿B.9.99亿C.99999万6.要使8□418≈8万,□里不能填(...
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