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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 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= 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÷7 |
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.
=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.
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