1 significant figure.
18.4 rounded to one significant figure becomes 20
20
200 million - 200 000 000 20 billion - 20 000 000 000
20 grams = 20 000 milligrams
1 significant figure.
Rounded to one significant figure it becomes 20
18.4 rounded to one significant figure becomes 20
20
20
23
20 of them
200 million - 200 000 000 20 billion - 20 000 000 000
20 grams = 20 000 milligrams
20 000
20 000 * 1.25 = 25 00020 000 * 1.25 = 25 00020 000 * 1.25 = 25 00020 000 * 1.25 = 25 000
40 000 pounds