START UNKNOWN INTO MATH EXAMPLES ADD TO

A problem in which the change (what is added to the start) and result (the outcome of performing the action) are given in the problem. The start is not known and is what the students determine. 4 Some horses are in the field. Then 8 more horses come to the field. Now there are 11 horses in the field. How many horses were in the field to start? ■ + 8 = 11 Example from Lesson 14.2, Task 4 • Additional Lessons 14.4, M14 Review, 15.1, M15 Review TAKE FROM A problem in which the change (what is taken from the start) and result (the outcome of performing the action) are given in the problem. The start is not known and is what the students determine. 2 José has some baseball cards. He gives 8 cards to Elena. Now José has 9 baseball cards. How many baseball cards did José have to start? ■ - 8 = 9 Example from Lesson 14.2, Task 3 • Additional Lessons 14.3, M14 Review, 15.2, M15 Review