How many tens in 8 ten thousands?

8 * 10,000 = 80,000

10*10 =100

10*100 = 1000

10*1000 = 10,000 so

8000

(ten thousands = 4 zeros...4 zeros minus 1 (for 10) is 3. 1000 has 3 zeros. then times 8 is 8000)