Round each number to the underlined digit.
5.373 →
8.624 →
4.295 →
Estimate each problem to the nearest tenth.
7.64 + 8.472 →
17.43 – 11.962 →
To become president of the United States, a person is required to be at least 1,820 weeks old. If there are 52 weeks every year, how many years old does a person need to be to become president of the United States?