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Properties and Mental Math

Properties and Mental Math . #3. Vocabulary. Vocabulary. Caution!. The Commutative and Associative Properties do not apply to subtraction or division. Example 1: Using Properties to Add and Multiply Whole Numbers Simplify 17 + 5 + 3 + 15.

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Properties and Mental Math

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  1. Properties and Mental Math #3

  2. Vocabulary

  3. Vocabulary

  4. Caution! The Commutative and Associative Properties do not apply to subtraction or division.

  5. Example 1: Using Properties to Add and Multiply Whole Numbers Simplify 17 + 5 + 3 + 15.

  6. Example 2: Using Properties to Add and Multiply Whole Numbers Simplify 4  13  5.

  7. Example 3 Simplify 23 + 8 + 12 + 7. 23 + 8 + 12 + 7 = 23 + 7 + 8 + 12 = 30 + 20 = 50

  8. Example 4 Simplify 49 + 17 + 51. 49 + 17 + 51 = 49 + 51 + 17 = 100 + 17 = 117

  9. Example 5 Simplify 6 × 33 × 5. 6 × 33 × 5 = 6 × 5 × 33 = 30 × 33 = 990

  10. Vocabulary

  11. When you multiply two numbers, you can “break apart” one of the numbers into a sum and then use the Distributive Property.

  12. Example 6: Using the Distributive Property to Multiply Use the Distributive Property to find the product. 6  35

  13. Example 7: Using the Distributive Property to Multiply Use the Distributive Property to find the product. 9  87

  14. Example 8 Use the Distributive Property to find each product. 6  71

  15. Example 9 Use the Distributive Property to find each product. 28  5

  16. Example 10 Use the Distributive Property to find each product. 8  44

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