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What are the problems with the addition of rational numbers in junior one mathematics?
The addition and subtraction of rational numbers is the basis of the whole junior high school study. I sorted out some calculation problems of rational numbers in senior one.

Addition calculation of rational numbers (1)(-9)+(- 13)

Answer: -22

(2)(- 12)+27

Answer: 15

(3)(-28)+(-34)

Answer: -62

(4)67+(-92)

Answer: -25

(5)(-27.8)+43.9

Answer: 16.5438+0

(6)(-23)+7+(- 152)+65

Answer:-103

(7)(-8)+(- 10)+2+(- 1)

Answer:-17

(8)(-8)+47+ 18+(-27)

Answer: 30

(9)38+(-22)+(+62)+(-78)

Answer: 0

( 10)(-8)+(- 10)+2+(- 1)

Answer:-17

Subtraction calculation of rational number (1)7-9

Answer: -2

(2)-7-9

Answer: 16

(3)0-(-9)

Answer: 9

(4)(-25)-(- 13)

Answer: 12

(5)8.2-(-6.3)

Answer: 14.5

(6)(- 12.5)-(-7.5)

Answer: -5

(7)(-26)-(- 12)- 12- 18

Answer: -44

(8)- 1-(-2 1)-(+23)

Answer: -3

(9)(-20)-(+5)-(-5)-(- 12)

Answer: -8

( 10)(-23)-(-59)-(-3.5)

Answer: 29.5

The above is my calculation of rational numbers, I hope I can help you.