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TOOLBOX #3: 1.3 PROPERTIES OF NUMBERS By: Miss McKeown.

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Presentation on theme: "TOOLBOX #3: 1.3 PROPERTIES OF NUMBERS By: Miss McKeown."— Presentation transcript:

1 TOOLBOX #3: 1.3 PROPERTIES OF NUMBERS By: Miss McKeown

2 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. Do Now: 1.Multiplication of whole numbers can also be described as __________________. 2.Find each product. A.5 x 30 B.6 x 15 C.50 x 7

3 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. TURN AND TALK Can you recall the properties of numbers? How can the property of numbers help you do mental math?

4 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. Communicative Property of Addition is changing the order of addends does not change the sum. Associative Property of Addition is changing the grouping of addends does don’t change the sum. Identity Property of Addition is the sum of 0 and any number is that number.

5 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. The table shows two groups of students who went on a field trip. Use mental math to find the total number of students. Room Number of Students 10132 10228

6 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. The table shows two groups of students who went on a field trip. Use mental math to find the total number of students. 32 + 28 = 32 + (20 + 8) = 32 + (8 + 20) = (32 + 8) + 20 = 40 + 20 = 60 32 + 28 =

7 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. Communicative Property of Multiplication is changing the order of addends does not change the product. Associative Property of Multiplication is changing the grouping of addends does don’t change the product. Identity Property of Multiplication is the product of 1 and any number is that number.

8 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. Find 4 × 8 × 25 = (4 × 25) × 8 = 100 × 8 = 800 4 × 8 × 25 = 4 × 25 × 8

9 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. Use mental math to find each sum or product. Identify the property used when solving. 1.25 + 27 + 15 2.(4 × 9) × 5 3.(25 × 9) × 8 4.(17 + 24) + 180

10 AIM: UNDERSTAND AND USE THE PROPERTIES OF NUMBERS. EXIT TICKET 1.Give a reason to justify each step Rate Yourself: 1 indicating you still need help understanding our classroom rules and procedures. 4 means that you are a master and can explain our classroom rules and procedures to Mr. Zilinski. 1 2 3 4 (4 × 9) × 5 = (9 × 4) × 5 = 9 × (4 × 5) = 9 × 20 = 180

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