Zero Pairs: 7.NS.1a
A hiker climbs 25 feet up a hill, then descends 25 feet. What is the overall change in height?
0
Write 1/2 as a decimal
0.5
Is 2/5 a terminating or repeating decimal and why?
Terminating because it stops.
A sandwich costs $5.25. If you buy 4 sandwiches, how much do you spend?
$21.00
A football team gains 12 yards on one play, then loses 12 yards on the next. What is the total change in yards?
0
How do you change a fraction to a decimal? Use correct vocabulary.
Divide the numerator by the denominator.
Which two fractions are equivalent to a repeating decimal?
1/11
1/5
3/8
4/9
7/10
A & D
Mia has $50. She spends $18.75 on lunch and $12.40 on gas. How much money does she have left?
$18.85
Sarah borrows $15 from her friend, then pays her back $10 the next day. After that Sarah then borrows $10 more dollars from her friend. How much money does she now owe her?
$15
A recipe calls for 3/8 of a cup of oil. Express 3/8 as a decimal.
0.375
Determine if the following fractions are terminating or repeating.
1/2
1/3
1/4
3/8
terminating
repeating
terminating
terminating
A taxi charges $2.50 per mile. If the ride costs $22.50, how many miles was the ride?
9
The elevation of a hiker is 1,200 meters. After which changes in elevation will the hiker be back at the same elevation?
A. a decrease of 300 m followed by an increase of 500 m
B. an increase of 250 m followed by a decrease of 250 m
C. an increase of 600 m followed by another increase of 600 m
D. a decrease of 150 m followed by a decrease of 50 m
B.
Chelsea buys a bag of apples. In the bag, 8/11 of the apples are green. Which decimal could also represent the portion of the apples in the bag that are green?
0.72 repeating
Give an example of a fraction that produces a terminating decimal. How do you know that it is a terminating decimal? (This is a two part question.)
Student response; It is terminating because the decimal stops.
A babysitter earns $9.25 per hour. Last week she worked 12.5 hours. Then she bought a pair of shoes for $45. How much money does she have left? (Exact money amount)
Which two situations involve opposite quantities combining to make 0?
A. A shopper owes $25 on a store credit card and then pays $25.
B. A mountain climber goes up 150 feet and then descends another 75 feet.
C. A train moves 220 miles north, turns around, and travels 220 miles south.
D. A student gains 10 points on a quiz and then gains 5 more points on homework.
E. The temperature drops by 40 degrees and then drops by anothe 40 degrees.
A & C
What is 2- 4/9 as a decimal?
2.4 repeating
Give an example of a fraction that produces a repeating decimal. How do you know that it is a repeating decimal? (This is a two part question.)
Student response; It is repeating because it has one or more digits that keep repeating.
A hiker starts at an elevation of 1,200 feet. On the first part of the hike, she descends ¾ of a mile (1 mile = 5,280 feet). Then she climbs 850 feet back up the trail. What is her final elevation?
-1910 or 1910 feet below sea level