递等式计算： (160-48/12)*4 336/ [ (39-29)*6 ] 62*(300-145/5) 150/ [90/ (67-52) ] (40分)
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(160-48/12)*4
= (160-4)*4
= 160*4-4*4
= 640-16
= 624
336/ [ (39-29)*6 ]
= 336/ [ 10*6 ]
= 336÷6÷10
= 56/10
=28/5
62*(300-145/5)
= 62*(300-29)
= 62*(300-30+1)
= 62*300-62*30+62*1
= 18600 - 1860 + 62
= 16740+62
= 16802
150/ [90/ (67-52) ]
= 150/ [90/15 ]
= 150/ 90 * 15
= 15/ 9 * 15
= 5/ 3 * 15
= 5 * 5
= 25
= (160-4)*4
= 160*4-4*4
= 640-16
= 624
336/ [ (39-29)*6 ]
= 336/ [ 10*6 ]
= 336÷6÷10
= 56/10
=28/5
62*(300-145/5)
= 62*(300-29)
= 62*(300-30+1)
= 62*300-62*30+62*1
= 18600 - 1860 + 62
= 16740+62
= 16802
150/ [90/ (67-52) ]
= 150/ [90/15 ]
= 150/ 90 * 15
= 15/ 9 * 15
= 5/ 3 * 15
= 5 * 5
= 25
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