试题 试卷
题型：填空题 题类：常考题 难易度：容易
北师大版数学三年级下册第六单元第四节吃西瓜同步练习
根据图形计算：
＋＝
－＝
1- = + = - = - =
- = - = 1- = + =
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23+65= 7600+1500= + = 58×9≈
39+47= 41×2= - = 659+304≈
90-38= 60×5= 1- = 503-287≈
试题篮
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