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Alabama State Course of study standard: Solve addition and subtraction problems, including word problems, involving two- and three-digit numbers with and without regrouping. Estimating sums and differences using multiple methods, including compatible numbers and rounding, to judge the reasonableness of an answer Power point by Susie Mumper 2011

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Vocabulary Vocabulary Lesson 4.2 Lesson 4.2 Lesson 4.4 Lesson 4.4 Lesson 4.6 Lesson 4.6 Lesson 4.1 Lesson 4.1 Lesson 4.3 Lesson 4.3 Lesson 4.5 Lesson 4.5

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1. 14 + 14 2. 12 + 21 3. 42 + 25 4. 90 + 18 5. 25 + 49

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1. MB p. 81 #’s 7-19 odd 2. In your journal do MB p. 81 #’s 23-27 odd 3. Choose a math game from the box.

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1. 350 + 40 2. 150 + 212 3. 560 + 161 4. 205 + 52 5. 90 + 215

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4,365 + 3,852

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Let’s look at MB p. 77 and we will do #’s 1-10 together.

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1. MB p. 78 #’s 11- 31 odd 2. MB p. 79 #’s 41-47 odd 3. Choose a math game from the box

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1. 21 + 6 2. 45 + 15 3. 9 + 36 4. 72 + 8 5. 12 + 13

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Let’s read the problem at the top of p. 74 together What are we asked to find? What information will we need? Is there any information you will not use? Is this a simple addition problem in which you are finding the sum? How is the first prediction tested?

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Let’s look at MB p. 75 #’s 1-4

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1. MB p. 75 #’s 5-8 all 2. Answer this question in your journal: How do you know whether a prediction you made is correct or incorrect. 3. Choose a game from the box

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1. 7 + ___ = 13 2. ___ + 9 = 18 3. 5 + 6 = 4. 8 + 7 = 5. 6 + 8 =

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224 +511 $9.07 +$1.25 1,298 +1,872

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1. MB p. 73 #’s 6-14 even and 30-32 even – stack on my table 2. Math worksheet To be taken up at 2:15 finished or not. 3. Choose a math game from the box.

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1. 12 + 10 2. 14 + 15 3. 41 + 39 4. 25 + 36 5. 21 + 57

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116 + 144 269 + 358

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Addition of Three-Digit Numbers Addition of Three-Digit Numbers Addition with regrouping 3 addends Addition with regrouping 3 addends Addition of 3 digit numbers with regrouping Addition of 3 digit numbers with regrouping

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1. MB p. 71 #’s 1-9 odd and 13-15 odd 2. Copy this table in your journal. Fill in the empty squares by adding across each row, and adding the numbers down each column. 3. Missing AR/Unfinished work 4. Choose a math game from the box 267389 119437

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1. 5 + 25 2. 30 + 20 3. 70 + 20 4. $4 + $6 5. 20 + 55

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Rounding to estimate sums 329 +174 AAAmath.com

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Front-end estimation 329 +174 Aaamath.com

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Rounding quiz Rounding quiz Front-end estimation video Front-end estimation video

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Turn in your books to page 69 and we will do 1-5.

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1. MB p. 69 #’s 6-12 even and 20-22 even 2. Use rounding to answer this problem in your journal: Jenna spent $3.79 for markers and $4.95 for a notebook. 3. Choose a math game from the black box.

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Estimate Expression Front end estimation Not equal to ≠

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To find out about how much or how many

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A method of estimating in which only the front digits are used

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The part of a number sentence that combines numbers and operation signs. Example: 5 + 6

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A relation symbol used to show that two numbers are not equal to each other.

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To find this secret number, add the greatest whole number that rounds to 50 and the least number that rounds to 80. What is the secret number?

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Katelyn’s number has as many tens as Keilan’s number has ones and as many ones as Keilan’s number has tens. If Katelyn subtracts 9 from his number and sandra adds 9 to her number, they will each have the same number, 22. What are their numbers?

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