In order to count from 170 to 410 using tens and hundreds, we first need to start adding 100 to 170 as long as the number is less than 410 as shown below:
170 + 100 = 270
270 + 100 = 370
If we add 100 to 370, the number would become 470 which would be greater than 410. Now add tens to 370 until we get 410 as follows:
370 + 10 = 380
380 + 10 = 390
390 + 10 = 400
400 + 10 = 410
