Arithmetic Grade One

Lesson One hundred eighteen: Adding Three Numbers

Addition Patterns

1 6 2 1 1 2 3 4 6 2 + 1 + 2 + 3 + 4 + 5 --- --- --- --- --- 5 11 9 11 8

1 5 6 3 3 2 3 5 1 6 + 9 + 3 + 3 + 4 + 5 --- --- --- --- --- 12 11 14 8 14

NOTE: Talk about adding three numbers with the student. Make up and solve a few examples with the student. Have the student do all the writing.