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คิดเลขเร็ว 4/1 ชุดที่ 3

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

 (3)+21=?\left(-3\right)+21=?  

(a)  

2.

 6+(14)=?6+\left(-14\right)=?  

(a)  

3.

 (9)+12=?\left(-9\right)+12=?  

(a)  

4.

 30+(5)=?30+\left(-5\right)=?  

(a)  

5.

 9+(17)=?9+\left(-17\right)=?  

(a)  

6.

 46+(8)=?46+\left(-8\right)=?  

(a)  

7.

 5+(31)=?5+\left(-31\right)=?  

(a)  

8.

 56+(8)=?56+\left(-8\right)=?  

(a)  

9.

 75+(9)=?75+\left(-9\right)=?  

(a)  

10.

 83+(3)=?83+\left(-3\right)=?  

(a)