__Math Unit 1 Part A: Place Value: Addition and Subtraction__

__This unit is 25 days: Anticipated Unit Testing window: the week of September 17th__**CCGPS:**

**Use place value understanding and properties of operations to perform multi**

**‐**

**digit arithmetic.**

MCC3.NBT.1 Use place value understanding to round whole numbers to the nearest 10 or 100.

MCC3.1.NBT.2 Fluently add and subtract within 1000 using strategies and algorithms based on place value, properties of operations, and/or the relationship between addition and subtraction.

**ADV: MCC4.NBT.2**Read and write multi-digit whole numbers using base-ten numerals, number names, and expanded form. Compare

two multi-digit numbers based on meanings of the digits in each place, using >, =, and < symbols to record the results of comparisons.

**MCC4.NBT.4**Fluently add and subtract multi‐digit whole numbers using the standard algorithm.

**Solve problems involving the four operations, and identify and explain patterns in arithmetic.**

MCC3.OA.8 Solve two-step word problems using the four operations. Represent these problems using equations with a letter standing for the unknown quantity. Assess the reasonableness of answers using mental computation and estimation strategies including rounding.

MCC3.OA.9 (only addition table in Unit 1) Identify arithmetic patterns (including patterns in the addition table or multiplication table),

and explain them using properties of operations. For example, observe that 4 times a number is always even, and explain why 4 times a number can be decomposed into two equal addends.

**ADV: MCC4.OA.5**Generate a number or shape pattern that follows a given rule. Identify apparent features of the pattern that were not explicit in the rule itself.

*For example, given the rule “Add 3” and the starting number 1, generate terms in the resulting sequence and observe that the terms appear to alternate between odd and even numbers. Explain informally why the numbers*

*will continue to alternate in this way.*

**(Note: addition rules only)**

**Essential Questions:**

·

**MCC3.NBT.1**
· How does the placement of a digit change the value of a number?

· Explain how to round a number to the nearest 10 or 100?

· When is it appropriate to round numbers?

·

**MCC3.NBT.2**
· How are addition and subtraction related?

· What strategy can I use to add mentally?

· What strategy can I use to subtract mentally?

· How can I use place value to add numbers?

· How can I use place value to subtract numbers?

·

**MCC3.OA.8**
· How do you know when to use addition or subtraction to solve a problem?

· When do you use addition or subtraction in everyday life?

· What patterns do you see in an addition table?

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