1. Topic 11
Week 27 Feb. 27 , 2019

2. Topic 11
MAFS.1.NBT.3.6 (DOK 2) Subtract multiples of 10 in the range from multiples of 10 in the range (positive or zero differences), 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. [Conceptual Understanding] · Identify the value of each digit of a number within 100. · Use concrete models or drawings to subtract multiplives of 10 in the range of from multiples of 10 in the range of (positive or zero differences). · Choose an appropriate strategy (based on place value, properties of operations, and/or the relationships between addition and subtraction) for solving subtraction problems with multiples of 10. · Relate the chosen strategy to a written method (equation) and explain the reasoning used

3. I Do! Use addition to solve each subtraction problem.
60 – 30 = _______.

4. We Do!
70 + _______ = 90,
so 90 – 70 = _______.

5. You Do!
52 – ___ = so ___ = 52
64 - _____ = 44 so ____ = 64
86 - _____ = 26 so _____ = 86