Our T-Shirt Factory is open!
In math, we are studying place value, addition, and subtraction. To make it come alive, we've opened a T-shirt Factory! In our factory, shirts can either be stored as loose shirts, in rolls of 10, or in boxes of 10 rolls (100 shirts). Using these amounts, we can find equivalent numbers, add and subtract shirts, and break apart numbers.
First, orders started rolling in. If an order for 78 shirts came in, we had to ask ourselves, "How many rolls of shirts is this? How many loose shirts?" At first, we only looked for the most efficient way - 7 rolls and 8 loose shirts. Now are looking for all the possible ways to make this order:
Order for :: 78 shirts
ROLLS | LOOSE SHIRTS0 | 78
1 | 68
2 | 58
3 | 48
4 | 38
5 | 28
6 | 18
7 | 8
Using this strategy, we see that 6 tens and 18 ones is equal to 2 tens and 58 ones or to 7 tens and 8 ones.
Today we will begin combining orders. How can we use this strategy of breaking apart numbers to easily add larger amounts? Today we will explore just that.
