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**Chapter 2 Practice Test Mastery Test A**

Basic Math skills Chapter 2 Practice Test Mastery Test A

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**Directions: list the set of all factors of these numbers**

DIRECTIONS: LIST THE SET OF MULTIPLES OF THESE NUMBERS M6 – 0, 6, 12, 18, 24, 30, 36, 42, 48, 54, 60…. M15 – 0, 15, 30, 45, 60, 75, 90, 105, 120, 135… M14 – 0, 14, 28, 42, 56, 70, 84, 98, 112, 126…

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**Directions: give the next three numbers in each pattern**

{0, 2, 4, 6, 8, 10, 12, 14} – the pattern is adding two each time (even numbers) {0, 1, 4, 9, 16, 25, 36} – add the next odd number to the existing number {1, 3, 6, 10, 15, 21, 28} – add the next number to existing number DIRECTIONS: CIRCLE THE ANSWERS TO THE FOLLOWING QUESTIONS Which of these are prime numbers? 23, 3, 41, 59 Which of these are composite numbers? 9, 57, 34, 49 Which number is divisible by 5? 3,240 Which number is divisible by 3? 8,217

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**Directions: write these numbers as the sum of two prime numbers**

38: , 52: , , DIRECTIONS: GIVE THE PRIME FACTORIZATION OF THESE NUMBERS 18: 3 X 3 X 2 30: 5 X 2 X 3 42: 7 X 2 X 3 16: 2 X 2 X 2 X 2

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**DIRECTIONS: FIND THE LEAST COMMON MULTIPLE OF EACH PAIR OF NUMBERS**

LCM (8,10) M8 – 0, 8, 16, 24, 32, 40, 48, 56… M10 – 0, 10, 20, 30, 40, 50, 60… LCM (9,12) M9 – 0, 9, 18, 27, 36, 45, 54, 63, 72, 81… M12 – 0, 12, 24, 36, 48, 60, 72… LCM (5,15) M5 – 0, 5, 10, 15, 20, 25, 30, 35, 40… M15 – 0, 15, 30, 45, 60, 75…

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**Directions: find the greatest common factor of each pair of numbers**

GCF (9,18) F9 – 1, 3, 9 F18 – 1, 2, 3, 6, 9, 18 GCF (12,25) F12 – 1, 2, 3, 4, 6, 12 F25 – 1, 5, 25 GCF (18,30) F30 – 1, 2, 3, 5, 6, 10, 15, 30

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