What if Ali only had tens and ones? How could she have modeled 624 without using hundreds?

She must have 62 tens and 4 ones.

yea wut she said lol :D

If Ali only had tens and ones, she could model the number 624 by using six groups of 100 (when referring to hundreds) as tens, two tens (to represent the tens place), and four ones (to represent the ones place). However, since we are trying to model 624 without using hundreds, we need to find an alternative approach.

To represent the number 624 with only tens and ones, Ali can use the place value system. The tens place represents groups of ten, and the ones place represents single units. Here's how she can model 624:

- In the tens place, Ali would have 6 tens because 6 represents the digit in the hundreds place. She can use 6 long objects (such as straws, sticks, or blocks) to represent these 6 tens.

- In the ones place, Ali would represent the digit in the tens place, which is 2. She can use 2 additional long objects to represent these 2 ones.

Finally, Ali would have 4 ones in the ones place. She can use 4 individual objects (such as counters, coins, or small stones) to represent these 4 ones.

This model shows Ali's representation of 624 using only tens and ones. It helps to visually understand the composition of the number without explicitly using hundreds.