
三年级数学练习--未知数
Quiz
•
Mathematics
•
3rd Grade
•
Hard
LEE Moe
Used 43+ times
FREE Resource
13 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
盒子里有15颗巧克力,妹妹拿走了一些。盒子里还剩下10颗巧克力。
以下哪个选项是未知数?
盒子里有15颗巧克力
妹妹拿走一些巧克力
妹妹拿走了5颗巧克力
盒子里剩下10颗巧克力
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
爸爸买了几个箱子。他把20棵小树苗平均放在这些箱子里,每个箱子能放4棵小树苗。
以下哪个选项是未知数?
爸爸买了几个箱子
20棵小树苗
每个箱子
4棵小树苗
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
布告栏上原本有10张通告,老师又贴上一些通告。现在布告栏共有16张通告。
以下哪个选项是未知数?
布告栏原本有10张通告
贴上一些通告
共有16张通告
老师又贴上6张通告
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
姐姐的桌子上有4个盒子,每个盒子有一样多的纸鹤。姐姐共有40只纸鹤。
以下哪个选项是未知数?
姐姐有4个盒子
姐姐共有40只纸鹤
一样多的纸鹤
每个盒子有10只纸鹤
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
妹妹原本有一些糖果,哥哥又给了妹妹3颗糖果。现在妹妹共有10颗糖果。
请选出正确的未知数算式。
N + 3 = 10
3 + N = 10
3 - N = 10
N - 3 = 10
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
严老师的桌子上有几叠作业簿。每一叠作业簿有30本,共有90本作业簿。
请选出正确的未知数算式。
N 30 = 90
30 N = 90
N 30 = 90
30 N = 90
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
3M班有35名学生。把全班平分成几组,每一组有7名组员。
35 N = 7
N 35 = 7
35 N = 7
35 7 = 7
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