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LESSON 5 Subtraction
Next to the factory, Mr. and Mrs. Haddad have a store where they sell their Chocos. They keep track of how much candy is sold using base-ten pieces. Sometimes they have to break apart skinnies, flats, or packs to keep track of how much candy they have in the store.
One morning, there were 3 flats, 6 skinnies, and 4 bits worth of candy in the store.
A customer came in and bought 147 pieces of candy. To find how much candy was left, Mrs. Haddad did the following:
One morning, there were 3 flats, 6 skinnies, and 4 bits worth of candy in the store.
A customer came in and bought 147 pieces of candy. To find how much candy was left, Mrs. Haddad did the following:
Since 7 bits cannot be taken away from 4 bits, she broke apart a skinny. Then there were 3 flats, 5 skinnies, and 14 bits. The Base-Ten Recording Sheet shows the trades.
Then she could take away 1 flat, 4 skinnies, and 7 bits.
There were 2 flats, 1 skinny, and 7 bits left. That is 217.