1.	Solve 12 − v = 7 mentally.
		A.	v = 5	B.	v = 19
		C.	v = 2	D.	v = 7
		Hint
	2.	Solve 10 + r = 23 mentally.
		A.	r = 7	B.	r = 33
		C.	r = 3	D.	r = 13
		Hint
	3.	Solve 12 + h = 22 mentally.
		A.	h = 8	B.	h = 12
		C.	h = 10	D.	h = 34
		Hint
	4.	Solve 15 − v = 7 mentally.
		A.	v = 8	B.	v = 22
		C.	v = 7	D.	v = 6
		Hint
	5.	If m − 4 = 11, what is the value of m?
		A.	11	B.	19
		C.	15	D.	4
		Hint