1,023 prompts matching "Checkpoint Worked Example: A word problem that needs the highest common factor"
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Quiz Me: Converting to base ten to solve a base two puzzle
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Practice: Counting in twos to reach a total quickly
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Practice: Converting twenty-five into base two
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Practice: Converting 1101 from base two into base ten
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Practice: Adding two four-digit binary numbers
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Quiz Me: Borrowing across a zero
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Quiz Me: Rounding both numbers before dividing
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Practice: Adding three large numbers in one sum
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Practice: Checking a subtraction by adding back
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Quiz Me: Finding factors in pairs
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Quiz Me: Why a composite number has more than two factors
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Quiz Me: Finding prime factors by repeated division
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Quiz Me: Writing repeated primes with indices
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Quiz Me: Why a number has no largest multiple
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Practice: Knowing when a list of factors is complete
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Practice: Why one has only a single factor
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Practice: Checking a prime factorisation by multiplying back
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Practice: Reading a number back out of index form
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Practice: Two numbers whose highest common factor is one
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Quiz Me: Checking two fractions are equivalent by cross-multiplying
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