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脱式计算14.5+12.9-4.72435-28×857+33×21127-28÷7125×8×3(57-23)×12100-70÷536×7+79=

题目详情
脱式计算
14.5+12.9-4.7        2435-28×85          7+33×21              127-28÷7
125×8×3          (57-23)×12          100-70÷5             36×7+79=

14.5+12.9-4.7        2435-28×85          7+33×21              127-28÷7
125×8×3          (57-23)×12          100-70÷5             36×7+79=
14.5+12.9-4.7        2435-28×85          7+33×21              127-28÷714.5+12.9-4.7       2435-28×85         7+33×21             127-28÷7 125×8×3          (57-23)×12          100-70÷5             36×7+79=125×8×3         (57-23)×12         100-70÷5            36×7+79=
▼优质解答
答案和解析
(1)14.5+12.8-4.7
=27.3-4.7
=22.6;

(2)2435-28×85         
=2435-2380
=55;

(3)7+33×21
=7+693
=700;

(4)127-28÷7
=127-4
=123;

(5)125×8×3
=1000×3
=3000;

(6)(57-23)×12  
=34×12
=408;

(7)100-70÷5
=100-14
=86;

(8)36×7+79
=252+79
=331.