展开全部
9405-2940÷28×21
=9405-105×21
=9405-2205
=7200
920-1680÷40÷7
=920-42÷7
=920-6
=914
690+47×52-398
=690+2444-398
=3134-398
=2736
148+3328÷64-75
=148+52-75
=200-75
=125
360×24÷32+730
=8640÷32+730
=270+730
=1000
2100-94+48×54
=2006+2592
=4598
=9405-105×21
=9405-2205
=7200
920-1680÷40÷7
=920-42÷7
=920-6
=914
690+47×52-398
=690+2444-398
=3134-398
=2736
148+3328÷64-75
=148+52-75
=200-75
=125
360×24÷32+730
=8640÷32+730
=270+730
=1000
2100-94+48×54
=2006+2592
=4598
展开全部
35+65+58+35
98+65-98+65
96+96+36+69
98+65-98+65
96+96+36+69
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