
	1.	Add. Use models if needed.
		A.	0.41	B.	0.93
		C.	1.13	D.	1.03
		Hint

	2.	Add. Use models if needed.
		A.	3.01	B.	3.11
		C.	4.01	D.	4.11
		Hint

	3.	Add. Use models if needed.
		A.	1.15	B.	2.13
		C.	2.03	D.	1.93
		Hint

	4.	Add. Use models or pictures if needed.
		A.	15.73	B.	16.73
		C.	8.08	D.	14.73
		Hint

	5.	Add. Use models or pictures if needed. 65.71 + 32.45
		A.	98.76	B.	97.16
		C.	97.76	D.	98.16
		Hint