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How much should I subtract first and how much should I add now for Math Problem 34-20 in the next volume of Senior One? What is the answer?
Solution: 34-20 = 14
First 30-20 = 10.
Calculate again 10+4 = 14.
Think about solving problems:
34 can be divided into 30 and 4 by division of numbers;
First subtract the integer from the integer: 30-20 = 10.
Then add the number of digits to the number: 10+4 = 14.