Addition and subtraction of integer

1) Please solve -9 + 1 = ?

• 10

• -10

• -8

• 8

2) Please solve -9 + 9 = ?

• 18

• -18

• 1

• 0

3) Please 5 + (-9) = ?

• -14

• 14

• 10

• -4

4) Please solve 12 - (-7) = ?

• 19

• -19

• 5

• -5

5) Please solve (-11) + (-19) = ?

• 30

• -30

• -8

• 8

6) Which of the followings is NOT integer?

• 0

• -1

• 1

• $\frac{3}{4}$

7) What is the opposite number of -100

• -100

• -101

• 100

• 0

8) What is the values of  $\left|-129\right|$  ?

• -129

• 129

• 0

• None of the above

9) What is " Positive number"?

• A number greater than zero

• A number less than zero

• Decimals

• None of the above

10) What is "Negative number"?

• Fractions

• Decimals

• Zero

• A number less than zero