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 Playing with Numbers 40 Flashcards |
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What is the process of grouping parts of an expression using symbols like (), {}, or [] called? |
Card: 1 / 40 |
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Simplification of Brackets |
Card: 2 / 40 |
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Which of the following is a prime number? A) 4 B) 9 C) 7 D) 10 |
Card: 3 / 40 |
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C) 7 |
Card: 4 / 40 |
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Riddle: I am a number greater than 1, and my only factors are 1 and myself. What am I? |
Card: 5 / 40 |
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A prime number |
Card: 6 / 40 |
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True or False: All even numbers are prime. |
Card: 7 / 40 |
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False. Only 2 is an even prime number. |
Card: 8 / 40 |
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Fill in the blank: A ______ is a number that divides another number completely without leaving a remainder. |
Card: 9 / 40 |
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Factor |
Card: 10 / 40 |
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What is the smallest prime number? |
Card: 11 / 40 |
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2 |
Card: 12 / 40 |
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Which number is a common multiple of 15 and 18? |
Card: 13 / 40 |
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90 |
Card: 14 / 40 |
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Fill in the blank: The ______ of two numbers is the largest number that divides both of them completely. |
Card: 15 / 40 |
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Highest Common Factor (HCF) |
Card: 16 / 40 |
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How do you find the multiples of a number? |
Card: 17 / 40 |
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Multiply the number by natural numbers (1, 2, 3, ...). |
Card: 18 / 40 |
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True or False: The only even prime number is 1. |
Card: 19 / 40 |
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False. The only even prime number is 2. |
Card: 20 / 40 |
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What is the method called that helps to identify prime numbers by crossing out multiples? |
Card: 21 / 40 |
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Sieve of Eratosthenes |
Card: 22 / 40 |
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Riddle: I am an infinite collection derived from multiplying a number by 1, 2, 3, and so on. What am I? |
Card: 23 / 40 |
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Multiples of a number |
Card: 24 / 40 |
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Fill in the blank: Two numbers are called ______ if their only common factor is 1. |
Card: 25 / 40 |
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Co-prime numbers |
Card: 26 / 40 |
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What is the relationship between HCF and LCM of two numbers? |
Card: 27 / 40 |
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HCF × LCM = Product of the two numbers. |
Card: 28 / 40 |
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Which method can be used to find the Lowest Common Multiple (LCM)? |
Card: 29 / 40 |
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Common Multiple Method |
Card: 30 / 40 |
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True or False: Every number is a multiple of itself. |
Card: 31 / 40 |
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True. |
Card: 32 / 40 |
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What type of number has more than two factors? |
Card: 33 / 40 |
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Composite number |
Card: 34 / 40 |
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Which property states that every number is a factor of itself? |
Card: 35 / 40 |
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Properties of factors |
Card: 36 / 40 |
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Riddle: I am the smallest number that is divisible by 4, 5, and 20. What am I? |
Card: 37 / 40 |
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20 |
Card: 38 / 40 |
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What is the method used to find all prime numbers up to a given number by crossing out multiples? |
Card: 39 / 40 |
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Sieve of Eratosthenes |
Card: 40 / 40 |
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Completed! Keep practicing to master all of them. |
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