How much is +7 - 4?

Number line: -15 to +15

A.3

B.11

C.-11

D.-3
_________
What is the value of +3 - 8?

Number line: -15 to +15

A.-11

B.-5

C.5

D.11
________
What is the value of 5 - 12?

Number line: -15 to +15

A.7

B.-17

C.17

D.-7
______What integer is the result of moving 10 units in a positive direction, starting at -6?

Number line: -15 to +15

A.-16

B.4

C.16

D.-4