Rounding Numbers
Round 347 to the nearest 10.
350
Which is deeper: 12 meters or 21 meters?
21 meters
If one sample shows 30 units and another 30 units, are they equal, greater, or less?
Equal
If pollution spreads 6 meters and a fish is 4 meters away, is the fish affected (yes/no)?
No
Name one ocean animal that could be harmed by pollution.
Answers may vary.
Examples: Turtle, fish, seal, crab, dolphin
Round 6,482 to the nearest 100.
6,500
Which depth has more pollution: 45 units or 62 units?
62 units
Choose which has more pollution: 88 units or 68 units?
88 units
If pollution spreads 8 meters and a crab is 10 meters away, is the crab affected (yes/no)?
No — 8 < 10
If pollution spreads 10 meters and a turtle is 12 meters away, is it safe (yes/no)?
Yes — 12 > 10
Round 28,671 to the nearest 1,000.
29,000
A sensor at 134 meters records pollution. Round 134 to the nearest 10.
130 meters
Which is larger: 3,200 units or 32,000 units?
32,000 units
If pollution spreads 6 meters and a fish lives 4 meters away, is it affected? Explain briefly.
Yes 6 > 4
A fish is 5 meters from a polluted area and pollution spreads 7 meters. Is the fish affected?
Yes — 5 < 7
Round 9,995 to the nearest 10.
10,000
Pollution at 78 meters rounds to what nearest 10?
80 meters
The readings are 415, 451, and 415. Which reading is the mode?
Mode is 415 (appears twice)
A pollution plume is 15 meters wide. A swimmer is 18 meters from the source. Is the swimmer inside the plume?
No — 18 > 15
A seal is 20 meters away and pollution spreads 20 meters. Is the seal affected?
Yes — 20 = 20
A pollution reading is 4,376 units. Round it to the nearest 1,000.
4,000
A sampling device records at 2,347 meters. Round that depth to the nearest 100.
2,300 meters
A study shows pollution at depths: 120, 130, 125, 130, 135. What is the median value?
Median is 130
Pollution spreads 25 meters from a spill. A turtle is 12 meters away and a seal is 30 meters away. Which animals are affected?
Turtle affected (12 < 25). Seal safe (30 > 25).
If pollution spreads 10 meters and a turtle is 12 meters away, and a crab is 8 meters away, which is safe and which is affected? Explain briefly.
Turtle is safe (12 > 10). Crab is affected (8 < 10).