We checked our homework and we did a page of classwork (NHM page 3) using the same skills. Those among us who listen well, and are willing to try hard and learn new ways of doing things, make a good job of their work. Some of the answers are on the board above.
If you have a harder question, like 10000 - 100, try covering up the tens and units. Why do we cover up the tens and units? We cover them up because we are subtracting 100, which means we need to work in the hundreds column. Now it looks like 100 - 1, which is easy. 100 - 1 = 99 and all we have to do now is copy the 00 that we covered up. The answer is 9900.
We checked our homework and we did a page of classwork (NHM page 3) using the same skills. Those among us who listen well, and are willing to try hard and learn new ways of doing things, make a good job of their work. Some of the answers are on the board above.
If you have a harder question, like 10000 - 100, try covering up the tens and units. Why do we cover up the tens and units? We cover them up because we are subtracting 100, which means we need to work in the hundreds column. Now it looks like 100 - 1, which is easy. 100 - 1 = 99 and all we have to do now is copy the 00 that we covered up. The answer is 9900. 
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