79000
Easy, the commas separate the numerical units. 1,000 is one thousand. 1,000,000 is one million and so on.
1,045,620
If you put the commas in, you'll see that the number is 12,000. This is twelve thousand in spelling.
6000000
130000
7000
79000
1000
Easy, the commas separate the numerical units. 1,000 is one thousand. 1,000,000 is one million and so on.
1,045,620
If you put the commas in, you'll see that the number is 12,000. This is twelve thousand in spelling.
140.000.000.000.000 (use commas in UK).
6000000
40005003 or 40,005,003 (with commas for readability)
Without the sentences provided, I can't determine which sentence uses commas correctly.
In between the 20 and the three zeroes. So it should look like this: 20,000.