Use the document below to help answer questions 1 and 2:

Estimation Worked Example (23.0K)

1		Use rounding and mental arithmetic to calculate 2.3 x 4.7 x 8.9.
			A)	64
			B)	72
			C)	80
			D)	90
2		Use rounding and mental arithmetic to estimate the total cost of grocery items consisting of $1.79, $5.99, $4.19, and $12.09.
			A)	$22
			B)	$23
			C)	$24
			D)	$25
3		A step in the stairwell of a large building is 35 cm high. If the building has a height of 200 m, how many steps are there in the stairwell, to the nearest hundred? Calculation and Rounding Worked Example (20.0K)
			A)	500
			B)	600
			C)	700
			D)	800

Use the document below to help answer questions 4 and 5:
Reasonableness of Answers Worked Example (22.0K)

4		Suleiman is considering buying a building lot measuring 23 m by 58 m. What is a reasonable value for the area of the lot?
			A)	1334 m2
			B)	1200 m2
			C)	1000 m2
			D)	800 m2
5		While vacationing in England, Roland bought an antique piano for 2800 pounds. Shipping to Canada was quoted at 25% of the price. A reasonable shipping charge is:
			A)	500 pounds
			B)	750 pounds
			C)	900 pounds
			D)	1250 pounds