早教吧作业答案频道 -->其他-->
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.
看了 脱式计算14.5+12.9-...的网友还看了以下:
已知向量a=(2,1),b=(x,y).(1)若x∈{-1,0,1,2},y∈{-1,0,1},求向 2020-03-30 …
求一数列.高2.a(n+1)=2an/2an+1已知a1=1a(n+1)=2an/2an+1求数列 2020-04-25 …
S=(1+1/1*2+(2+1/2*3)+(3+1/3*4)+...+(20+1/20*21)S= 2020-04-27 …
设函数f(x)=(1+1/n)的n次方(n∈正整数,n大于1,x∈r)1,对于任意x,证明(f(2 2020-05-14 …
几道数学计算题(请写过程)第一题1/2+(1/3+2/3)+(1/4+2/4+3/4)+…+(1/ 2020-05-16 …
2^2-1^2=2*1+13^2-2^2=2*2+14^2-3^2=2*3+1……(n+1)^2- 2020-05-19 …
1.420X40%/(1-40%)=?2.420X1/(1+2/5)3.(420X2/5)/(1+ 2020-07-19 …
(1)已知a+b=-c,则a(1/a+1/b)+b(1/a+1/c)+c(1/a+1/b)的值是多少 2020-10-31 …
计算一道数学题,(1+1/2)×(1+1/3)×(1+1/4)×(1+1/5)×(1+1/6)×(1 2020-11-30 …
观察下列等式:11×2=1−12,12×地=12−1地,1地×地=1地−1地,将以r三个等式两边分别 2020-12-05 …