Standard: 1.NBT.C.4 Add within 100, including adding a two-digit number and a one-digit number, and adding a two-digit number and a multiple of 10, using concrete models or drawings and strategies based on place value, properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used. Understand that in adding two-digit numbers, one adds tens and tens, ones and ones; and sometimes it is necessary to compose a ten. Math Practice Standards: MP3, MP5, MP8 Task Exemplar: When Eddie arrived at the ball game, his team had already scored 28 points. While he watched the rest of the game, they scored 7 more points. Part A How many points did Eddie’s team have when the game ended? Make a model or drawing to help you solve this problem. Explain your thinking. Part B When Eddie went to the next game, the total amount of points scored by both teams was 43. One team scored a two-digit number and the other team scored a single digit number? What might the numbers be? Make a model or drawing to help you solve this problem. Explain your thinking.