新北师大版小学四年级下册数学第三单元精品试题带参考答案
第三单元评估时间:90分钟 满分:100分 分数: 一、我会填。(24分)1.( )扩大到原来的1000倍是45,( )缩小到原来的1100是5.3。2.2.45×3.7的积是( )位小数,如果其中一个乘数扩大到原来的10倍,那么结果保留整数约是( )。(导学号 95162086)3.下图是一块警示标志牌,这块标志牌的面积约是( )平方分米。4.在○里填上“>”“
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