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Math Lab Number Theory. Chapter 4. Question 1. Roger has 126 pieces of candy. He has 3 friends. Can he divide the candy evenly between his friends?. Question 2. Bert has 40 pencils. He divides him in to 2 piles. Are there any leftover pencils? What about 3 piles? What about 5 piles?
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Math LabNumber Theory Chapter 4
Question 1 Roger has 126 pieces of candy. He has 3 friends. Can he divide the candy evenly between his friends?
Question 2 Bert has 40 pencils. He divides him in to 2 piles. Are there any leftover pencils? What about 3 piles? What about 5 piles? What about 6 piles? What about 10 piles? Divisibility Rules 2: Ends in 0,2,4,6,8 3: Add digits divisible by 3 5: Ends in 0,5 6: Yes for both 2 and 3 9: Add digits divisible by 9 10: Ends in 0
Question 3 Create a factor tree for 40:
Question 4 Write 30 as 3 prime numbers multiplied together: 30 = _____ x _____ x _____
Question 5 Find the LCM of 15 and 20: LCM: The smallest number that two numbers have as a common multiple. 6: 6 , 12 , 18 , 24 4: 4 , 8 , 12 , 16 , 20 , 24
Question 6 Find the GCF of 15 and 20. GCF: The largest number that will divide both numbers in a pair. 15: 1 , 3 , 5 , 15 20: 1 , 2 , 4 , 5, 10, 20
Question 7 Three miles is 16,000 ft. Re-write this in scientific notation. ______ x 10___
Question 8 Re-write 4.5 x 106 as a normal number:
Question 9 Find the next three numbers in this sequence: 4 , 8 , 12 , 16 , 20 , ___ , ___ , ___ What is the rule?
Question 10 Find the next three numbers in this sequence: 1 , 2 , 4 , 8 , 16, ___ , ___ , ___ What is the rule?