What is the least common multiple (LCM) of 15 and 10?

1. Express 15/100 in lowest terms.
2/5
7/9
3/20
11/21

Ans: 3/20

2. What is the least common multiple (LCM) of 15 and 10?
30
5
10
3

Ans: 30

3. Express in standard numeral form: 3^5
243
486
729
81

Ans: 243

4. What answer will you get if you round off 580895 to the nearest hundred thousands?
500000
600000
580000
5800

Ans: 600000

5. What is the result when you round off 11321109 to the nearest millions?
11000000
12000000
11300000
10000000

Ans: 12000000