8 tens 2 ones
539 tens and 2 ones
It has 2 ones and 5 tens
20
Write 87 tens and 2 ones as a base ten number.
In 5420, you have:5 x thousand; 4 x hundred; 2 x tens; zero x ones (the American ones in math is known as units in British maths!).
108
Four tens and two ones.
Ten tens One hundred ones
2 is in ones place.
4 tens + 9 ones 3 tens + 19 ones 2 tens + 29 ones 1 ten + 39 ones 49 ones.
10,10,10,10,10, which shows that there are five ones in five tens.