
	1.	Find the sum.
		A.	47	B.	46
		C.	44	D.	57
		Hint

	2.	Find the difference.
		A.	50	B.	46
		C.	56	D.	47
		Hint

	3.	Find the difference.
		A.	25	B.	23
		C.	22	D.	20
		Hint

	4.	Find the missing numbers. 2, 4, 6, ___, 10, ___, 14, ___
		A.	7, 12, 16	B.	8, 12, 16
		C.	7, 11, 15	D.	8, 15, 17
		Hint

	5.	Find the missing numbers. 3, 6, 9, ___, 15, ___, 21
		A.	13, 18	B.	12, 18
		C.	10, 16	D.	11, 17
		Hint