Mathematics Problem Solving
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These flashcards cover key concepts and problem-solving strategies discussed in the mathematics lecture, focusing on number addition, digit counting, area calculation, magic squares, and cryptarithms.
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5 Terms
1
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What is the sum of 531 + 642 + 753 + 864 + 975?
3765
2
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How many times does the digit '3' appear in the first 40 odd counting numbers?
13 times
3
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What is the area of the new smaller rectangle after folding an 8 cm by 12 cm rectangle in half twice?
24 cm²
4
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In the sum of numbers from 1 to 7 arranged in a magic square, what is the least possible product of the numbers across the gray row?
6
5
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In the cryptarithm BETTER + BITTER + BATTER + BUTTER, what is the least possible sum?
512024
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Flashcards (43)