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Unit 1 Review Number Theory Created by: Mrs. Jaeger Bridge Valley Elementary
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Topics to Review Even and Odd Numbers Factors of a number Prime and Composite Numbers Exponential Notation Square Numbers Prime Factorization Arrays Divisibility Factor Capture Game
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On your scratch paper, write the numbers that are even from the list below. 2, 5, 15, 6, 12, 98, 101, 222,249 Check your answers by clicking the mouse. Secure Skill
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On your scratch paper, write the numbers that are odd from the list below. 1, 6, 51, 787, 98, 561, 222, 249 Check your answers by clicking the mouse. Secure Skill
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Write all of the factors for the number 16. Check your notes if you need the definition for factor. Secure Skill 1, 2, 4, 8, 16
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Write all of the factors for the number 15. Check your notes if you need the definition for factor. Secure Skill 1, 3,5, 15
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Name a number between 1 and 100 that is divisible by 3 but NOT 2 Secure Skill An ODD number, whose digits are divisible by 3. Example: 93 93 = 9 + 3 = 12 12 divided by 3 = 4 93 is divisible by 3 but NOT by 2 because it is an odd number.
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Write if the following numbers are prime or composite. 2 ______________________________________ 4 _______________________________________ 17 ______________________________________ 24 ______________________________________ Factors: 1, 2 Factors: 1, 2, 4 Factors: 1, 17 Factors: 1, 2, 3, 4, 6, 8, 12, 24 Secure Skill Remember: Prime has only 2 factors – 1 and itself Composite has more than 2 factors
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Complete the Divisibility Table below. Use your “tests” to help you determine which numbers are divisible by the give number. NumberDivisible by 2 Divisible by 3 Divisible by 6 Divisible by 5 230 yes Even number no 2 + 3 + 0 = 5 5 divided by 3 = 1.666 *sum has a remainder no It is NOT divisible by both 2 and 3 yes Ends in a 0
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Create 3 arrays for the number 10. Remember to label your array with a number model. Secure Skill
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Working with exponents. Identify the missing number. 6 2 = ____ 2 2 = ____ 5 2 = ____ ___ 2 = 64 ___ 2 = 16 ___ 2 = 81 36 4 25 8 4 9 Developing Skill
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16842222 Write the prime factorization for the number 16. Use a Factor Tree to help you. Show using exponents: _____ 2424 Beginning Skill 2 * 2 * 2 * 2 = 16 16422422
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List the square numbers using the factors 1 – 10. 11 44 99 16 25 36 49 64 81 100 Secure Skill
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Questions? Be sure to ask Mrs. Jaeger in class. Keep working hard! This is very challenging material. You will do GREAT if you continue to work at it!
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