LESSON 4 Addition

One day, Rhonda made 326 pieces of candy. She used the base-ten pieces to show her work. She recorded 3 flats, 2 skinnies, and 6 bits using base-ten shorthand. Joe made 258 candies which he recorded as 2 flats, 5 skinnies, and 8 bits. Mrs. Haddad wanted to know how much candy they made altogether. She recorded her addition like this:

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Mrs. Haddad saw that she was not using the fewest base-ten pieces possible. Since there are 14 bits, she can make 1 more skinny with 4 bits left over. Mrs. Haddad recorded her work like this:

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