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先画树状算图,再用逆推法求方框中的数.(1)136.36-□+28.55=154.84(2)34.25-(□+14.77)=0.85(3)18.11-(□-4.86)=1.42(4)132.7-(79.09-□)=98.

题目详情
先画树状算图,再用逆推法求方框中的数.
(1)136.36-□+28.55=154.84    
(2)34.25-(□+14.77)=0.85
(3)18.11-(□-4.86)=1.42    
(4)132.7-(79.09-□)=98.
▼优质解答
答案和解析
(1)

136.36-(154.84-28.55),
=136.36-126.29,
=10.07;

(2)

34.25-0.85-14.77,
=33.4-14.77,
=18.63;


(3)

18.11-1.42+4.86,
=16.69+4.86,
=21.55;


(4)

79.09-(132.7-98),
=79.09-34.7,
=44.39.