This Application Problem is a part of the Lesson 5, Unit 6, Grade 1.<br> In this lesson, students continue to consider tens and ones as they identify 10 more, 10 less, 1 more, and 1 less than any two-digit number. This work helps students attend to the parts within a two-digit number, a skill that is critical to adding two-digit numbers within 100. Students recognize that when looking at a number such as 37, they focus on the tens place when adding or subtracting 10 and on the ones place when adding or subtracting 1.
