Answer:
62,970
Step-by-step explanation:
Let's estimate the numbers so multiplication is easier.
[tex]30 * 2100[/tex] is a lot easier to multiply! We will just subtract 30 from what we get there:
[tex]3 * 21 = 63 ({\text{add zeros}) \\ = 63,000[/tex]
[tex]63,000 - 30 = 62,970[/tex]
Thusly, [tex]30*2099[/tex] is [tex]\boxed{62,970}[/tex].
Hope this helps! ((;
