423 2 14 7 333 2 15 7 423 1 30????????????????????3 116 523 116 52???????????????? 15 14 8.255 138. 124 337 122 17?? 8 42 1 30 1 20 1 12 16 12 1?????7 423 2 14 7 333 2 15 7 423 1 30?????4 3 18 72 39 5???5 35 14 31.1 15 2?????????? 14 56.05 3 14 95??? 7 417 417 417 41?????????? 21 11 22 77 133 177 13?????????????????????????3 116 523 116 52????????????????15 14 8.255 138.12 777 × 9+1111 ×3 9 ( 13 × 67 - 114 )÷ 1415 117 - 87 × 58 + 514 【 12 -( 34 - 35 )】÷ 7 10 46 × 8-120 ÷ 15 (12.5 × 8-40 )÷ 0.6 3 5)3 25 4(3 2???1-( 16 + 17 )×233.6 ÷8+33.6 ÷ 871.25 ×6 15 +3.8 ÷ 4518÷[6 5 +( 8 5 -3 1 )] 10 21.6 -0.8 ×4÷0.8 ×435 3 ×3.7 +3.6 +5.3 ×35 3 375+450 ÷ 18× 25 10÷ 2.5+0.5 × 0.3 4.15 - 3.75 × 10% - 51+ ( 2304-2042 )× 23 4215+ ( 4361-716 )÷ 81 ( 247+18 )× 27÷ 25 36-720 ÷( 360 ÷ 18) 1080 ÷( 63-54 )× 80 58
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