Adding Rational
Numbers
Numbers
-9.5 + 6
-3.5
6.25 - (-3.5)
9.75
(-3)(-6.2)
18.6
1 ÷ (9/5)
5/9
Mike hiked to Big Bear Lake in 4.5 hours at an average rate of 3 1/5 miles per hour. Pedro hiked the same distance at a rate of 3 3/5 miles per hour. How long did it take Pedro to reach the lake?
4 hours
1 1/4 + 2 1/2
3 3/4
-1/2 - 5/9
-1 1/18
(-3/4)(-2/3)
1/2
-10.35 ÷ -2.3
4.5
Three rock climbers started a climb with each person carrying 7.8 kilograms of climbing equipment. A fourth climber with no equipment joined the group. The group divided the total weight of climbing equipment equally among the four climbers. How much did each climber carry?
5.85 kg
(-3 1/2) + (-2 3/4)
-6 1/4
(-7 3/4) - (-4 7/8)
-2 7/8
(-3/4)(1/2)(-2/3)
1/4
(5 1/3) ÷ (-1 1/2)
-32/9 or -3 5/9
Foster is centering a photo that is 3 1/2 inches wide on a scrapbook page that is 12 inches wide. How far from each side of the page should he put the picture?
4 1/4 in.