Question

Rename 780,000 = 78 ______

Answer 1

Need to find the value of 78
 Since this is a 6 digit whole number, we have ones, tens, hundreds, thousands, ten thousands, hundred thousands.
 7 = hundred thousands
 8 = ten thousands
 7 hundred thousands + 8 ten thousands
 Thus, the renamed of 780 000 is 7 hundred 8 ten thousands.

Answer 2

780,000=78 _________
the space is a multipule of 10

780,000=78 times 10,000

so it is 78 ten thousdands
the blank is the words 'ten thousands'