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.