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There's a problem. No! Dongning Experimental Primary School (People's Education Edition) Grade Four Mathematical Resources and Evaluation Page 6, Question 1
( 1) 15+ 10=25,25÷5=5,5×8=40 ,40-4=36

36 >; 30

(2) 44+4=48,48÷8=6,6×5=30,30- 10=20