1.	Estimate the difference to the nearest ten. 626 − 187
		A.	440	B.	400
		C.	430	D.	450
		Hint
	2.	Estimate the difference to the nearest ten. 298 − 108
		A.	180	B.	200
		C.	190	D.	170
		Hint
	3.	Estimate the difference to the nearest hundred. 626 − 187
		A.	400	B.	600
		C.	700	D.	500
		Hint
	4.	Estimate the difference to the nearest hundred. 523 − 491
		A.	80	B.	100
		C.	0	D.	90
		Hint
	5.	Estimate the difference to the nearest hundred. 769 − 335
		A.	300	B.	500
		C.	600	D.	400
		Hint