Question

Show a way to count from 668 to 900 using ones, tens, and hundreds

Answer 1

We can count from 668 to 900 using ones, tens, and hundreds.
if we add 2 ones to 668= 668 + 2 = the number will be 670
and then add 3 tens = 670 + 30 = 700, the number will be 700
now add 2 hundreds, 700 + 200 = 900
So the way is:
668 + 2 ones = 670
670 + 3 tens = 700
700 + 2 hundreds = 900
or
668 + 2 hundreds = 868
868 + 3 tens = 898
898 + 2 ones = 900

Answer 2

668 + 232 ones = 900

or

668 + 23 tens + 2 ones = 900

or

668 + 2 hundreds + 32 ones = 900

or

668 + 2 hundreds + 3 tens + 2 ones.

Explanations

900 - 668 = 232. Meaning we can add 232 ones to 668 to get 900.

232-200 = 32 ⇒ Meaning, we can add 2 hundreds and 32 ones to 668 to get 900.

32-30 = 2. This means we can add 2 hundreds, 3 tens and 2 ones to 668 to get 900.

900 - 668 = 232