20 and 30
580 & 590
40 and 50.
Write 87 tens and 2 ones as a base ten number.
you write it like this:13.0 because even though there's a number in the ones spot since there is a number in the tens spot it makes it 13 tens
ones- 1, tens- 6, hundreds- 3, thousandths- 9
ones- 1, tens- 6, hundreds- 3, thousandths- 9
60
640,00
1,980
It is 40.
427 = 42 tens, plus 7 ones