二年级数学心算（加减乘除）
Flashcard
•
Mathematics
•
2nd Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
（）➗ 4 = 36
Back
9
2.
FLASHCARD QUESTION
Front
( ) x 7 = 42
Back
6
3.
FLASHCARD QUESTION
Front
4 x 3 = ?
Back
12
4.
FLASHCARD QUESTION
Front
12 x 7 = ?
Back
84
5.
FLASHCARD QUESTION
Front
( ) ÷ 9 = 0
Back
0
6.
FLASHCARD QUESTION
Front
加法的定义
Back
将两个或多个数相加的运算。
7.
FLASHCARD QUESTION
Front
减法的定义
Back
从一个数中减去另一个数的运算。
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