10*10 - 10 + 10/10
= 100 - 10 + 1
= 91
9 is the tens digit; 1 is less than 5 so round down. 91 rounded to the nearest ten is 90.
.5 tens are in 5
5
5 tens which is 50
you put them in 5 groups
5 tens x 7 tens = 35 hundreds = 3 thousands 5 hundreds.
We need 200 tens to make 2000. 2000/10 = 200 So, there are 200 tens in 2000.
5 with 6 remaining
91% of 5 = 4.55 = 91% * 5 = 91%/100% * 5 = 0.91 * 5 = 4.55
40
There are 5 tens
5 tens