早教吧作业答案频道 -->其他-->
脱式计算,能简算的可以简算49×102-2×49125×76×88.33-2.43-4.57103×3236×99+3641000÷8÷125(39+21)×(84÷7)550+230×62÷31(324-285)×12÷26.
题目详情
脱式计算,能简算的可以简算 49×102-2×49 | 125×76×8 |
8.33-2.43-4.57 | 103×32 |
36×99+36 | 41000÷8÷125 |
(39+21)×(84÷7) | 550+230×62÷31 |
(324-285)×12÷26. |
▼优质解答
答案和解析
(1)49×102-2×49
=49×(102-2)
=49×100
=4900;
(2)125×76×8
=125×8×76
=1000×76
=76000;
(3)8.33-2.43-4.57
=8.33-(2.43+4.57)
=8.33-7
=1.33;
(4)103×32
=(100+3)×32
=100×32+3×32
=3200+96
=3296;
(5)36×99+36
=36×(99+1)
=36×100
=3600;
(6)41000÷8÷125
=41000÷(8×125)
=41000÷1000,
=41;
(7)(39+21)×(84÷7)
=60×12
=720;
(8)550+230×62÷31
=550+230×(62÷31)
=550+230×2
=550+460
=1010;
(9)(324-285)×12÷26
=39×12÷26
=468÷26
=18.
=49×(102-2)
=49×100
=4900;
(2)125×76×8
=125×8×76
=1000×76
=76000;
(3)8.33-2.43-4.57
=8.33-(2.43+4.57)
=8.33-7
=1.33;
(4)103×32
=(100+3)×32
=100×32+3×32
=3200+96
=3296;
(5)36×99+36
=36×(99+1)
=36×100
=3600;
(6)41000÷8÷125
=41000÷(8×125)
=41000÷1000,
=41;
(7)(39+21)×(84÷7)
=60×12
=720;
(8)550+230×62÷31
=550+230×(62÷31)
=550+230×2
=550+460
=1010;
(9)(324-285)×12÷26
=39×12÷26
=468÷26
=18.
看了 脱式计算,能简算的可以简算4...的网友还看了以下:
1/1,-1/2,-2/1,1/3,2/2,1/3,-1/4,-2/3,-3/2,-4/1,1/5 2020-04-09 …
分式求和问题1/(2^k+1)+1/(2^k+2)+…+1/2^(k+1)为什么1/(2^k+1) 2020-04-26 …
S=(1+1/1*2+(2+1/2*3)+(3+1/3*4)+...+(20+1/20*21)S= 2020-04-27 …
已知a大于0,b大于0,a+b=1,求证(a+1/a)(b+1/b)大于或等于25/4.解法里面有 2020-05-15 …
虚数化简1/4*(-4+4*i*3^(1/2))^(1/3)+1/(-4+4*i*3^(1/2)) 2020-07-30 …
必修I·指数函数部分化简[1+2^(1/8)][1+2^(1/4)][1+2^(1/2)]快+好者 2020-08-02 …
由下列各式:1>1/2,1+1/2+1/3>1有下列各式:1>1/2;1+1/2+1/3>1;1+1 2020-10-30 …
1.已知x,y为实数,且y=(x-1/2)^(1/2)+(1/2-x)^(1/2)+1/2,求5x+ 2020-10-31 …
求一道预备班数学期中考试的答案小明在做题时发现了一个规律:1*2/1=1-2/1,2*3/1=2/1 2020-11-05 …
观察下列等式:1/1*2=1-1/2,1/2*3=1/2-1/3,1/3*4=1/3-1/4.在线等 2020-12-05 …