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The answer to the first question in the second edition of Math Newspaper for Primary School Students (Grade One) 1 176 "Find the law and fill in the numbers"
Solution: ∫10+27 = 37; 30+24=54;
∴( 1) is 92-50=42.
(2) The number entered is 26+3=29.
(3) The numbers are 30 and 36 or 20 and 46. ...
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