Numbers a”round” the world
100

A 9 month pregnancy rounded to the nearest year

1 year

200

Mariana Trench deepest depth (36,000 feet) rounded to the nearest 10,000 feet

40,000 feet

300

According to the chart, an 8 year old cat is how old in human years (ROUND the answer to the nearest 10)

50 years old

400

Number of people on Earth (8.3 billion) rounded to the nearest billion

8 billion

500

Fastest man Usain Bolt’s 100 meter dash record of 9.58 seconds rounded to the nearest tenth of a second. 

9.6 seconds

600

29.5 day lunar cycle rounded to the nearest ten

30

700

Pi to the nearest thousandth 

3.142