要100道脱式计算简便计算要答案大哥大姐我很急!拜托你了

解析:
33×99+33
=33×(99+1)
=33×100
=3300

用简便方法计算17.5*101要答案急

17.5*101
17.5*(100+1)
=17.5*100+17.5*1
=1750+17.5
=1767.5

3.12×24+1.88×2.4脱式计算简便计算急

3.12×24+1.88×2.4
=31.2x2.4+1.88x2.4
=(31.2+1.88)x2.4
=33.08x2.4
=79.392

简便计算,求答案,速度,急

96×9+9
=96×(9+1)
=96×10
=960
73.26-(3.26+18)
=(73.26-3.26)-18
=70-18
=52
87×125×8
=87×(125×8)
=87×1000
=87000
(125+40)×8
=125×8+40×8
=1000+320
=1320
21.4-15.32-4.68+4.6
=(21.4+4.6)-(15.32+4.68)
=26-20=6
6.75-2.9-3.1
=6.75-(2.9+3.1)
=6.75-6
=0.75
25×32×125
=25×(4×8)×125
=(25×4)×(8×125)
=100×1000
=100000
99×33
=(100-1)×33
=33×100-33
=3300-33
=3267

简便计算28×307怎么算?急!拜托了!

28x307
=28x(300+7)
=28x300+28x7
=8400+196
=8596

急!大哥大姐拜托了!

1,补充对话
A:hi,john B:hi,eric
A:did you【hear】 about the news about tim? B:【What】【happened】to him?
A:his house was on fire last night B:was he ok?
A:yes,he and his family【were】fine.【But或者Only】thehouse was on fire,he was sleeping. his mother【woke】 him up,they【left】 the house quickly,the firemen put【out】 the fire in ten minutes.
B:shall we do something for him? A:【Let's】 call him and ask what we can do,
B:good 【idea】
2,句子翻译
1,当老师进来的时候,你正在做什么?what 【were】【were】【doing】 when the teacher came in?
2,当我打电话给你的时候,你正在哪里踢球?【Were】you 【watching】 football when i【called】 you?
3,也许将来我也能进入太空。【Maybe】 i can go into the space【in】【the】【future】
4,他们两个都想去日本度假。they 【all】 want to go to japan 【for】【a】【vacation】
3,句子转换
1,she went shopping by bus yesterday.(对by bus提问)(划线提问)【How】did she【go】shopping yesterday?
2,there are some apples in the fridge?【Are】there【any】apples in the fridge?
3,did you go to bed at11:00 o"clock last night. 题目是什么?
4,can i help you?(同义句)_【What】can i【do】for you?

4.7乘以1.02简便计算答案急

4.7×1.02
=4.7×(1+0.2)
=4.7×1+4.7×0.2
=4.7+0.94
=5.64

2.17*0.86-0.42 3.95+1.2*5.2 2.3*4.8*2.7 请大哥大姐帮帮忙用简便方法计算 急!

2.17*0.8-0.42=1.736-0.42=1.316直接计算,3.95+1.2*5.2=10.19
2.3*4.8*2.7=29.808

0.027×9.9+0.27的简便计算,拜托了!急!

[-|98|+76+(-87)]*23[56+(-75)-(7)]-(8+4+3)
5+21*8/2-6-59
68/21-8-11*8+61
-2/9-7/9-56
4.6-(-3/4+1.6-4-3/4)
1/2+3+5/6-7/12
[2/3-4-1/4*(-0.4)]/1/3+2
22+(-4)+(-2)+4*3
-2*8-8*1/2+8/1/8
(2/3+1/2)/(-1/12)*(-12)
(-28)/(-6+4)+(-1)
2/(-2)+0/7-(-8)*(-2)
(1/4-5/6+1/3+2/3)/1/2
18-6/(-3)*(-2)
(5+3/8*8/30/(-2)-3
(-84)/2*(-3)/(-6)
1/2*(-4/15)/2/3
-3x+2y-5x-7y
(1)把-2-(+3)-(-5)+(-4)+(+3)写成省略括号和的形式,正确的是( )
A.-2-3-5-4+3 B.-2+3+5-4+3
C.-2-3+5-4+3 D.-2-3-5+4+3
(2)计算(-5)-(+3)+(-9)-(-7)+ 所得结果正确的是( )
A.-10 B.-9 C.8 D.-23
(3)-7,-12,+2的代数和比它们的绝对值的和小( )
A.-38 B.-4 C.4 D.38
(4)若 +(b+3)2=0,则b-a- 的值是( )
A.-4 B.-2 C.-1 D.1
(5)下列说法正确的是( )
A.两个负数相减,等于绝对值相减
B.两个负数的差一定大于零
C.正数减去负数,实际是两个正数的代数和
D.负数减去正数,等于负数加上正数的绝对值
(6)算式-3-5不能读作( )
A.-3与5的差 B.-3与-5的和
C.-3与-5的差 D.-3减去5
2.填空题:(4′×4=16′)
(1)-4+7-9=- - + ;
(2)6-11+4+2=- + - + ;
(3)(-5)+(+8)-(+2)-(-3)= + - + ;
(4)5-(-3 )-(+7)-2 =5+ - - + - .
3.把下列各式写成省略括号的和的形式,并说出它们的两种读法:(8′×2=16′)
(1)(-21)+(+16)-(-13)-(+7)+(-6);
(2)-2 -(- )+(-0.5)+(+2)-(+ )-2.
4.计算题(6′×4=24′)
(1)-1+2-3+4-5+6-7;
(2)-50-28+(-24)-(-22);
(3)-19.8-(-20.3)-(+20.2)-10.8;
(4)0.25- +(-1 )-(+3 ).
5.当x=-3.7,y=-1.8,z=-1.5时,求下列代数式的值(5′×4=20′)
(1)x+y-z; (2)-x-y+z; (3)-x+y+z; (4)x-y-z.
某水利勘察队,第一天向上游走5 千米,第二天又向上游走5 ,第三天向下游走4 千米,第四天又向下游走4.5千米,这时勘察队在出发点的哪里?相距多少千米?
6、有理数混合运算的顺序是:先算 ,再算 ,最后算 ,如果有 ,就先算 里面的。
11、8-4÷(-2); 12、-9+5×(-6)-12÷(-6)
14、-1-〔1-(1-0.6÷3)〕×〔2-(-3)×(-4)〕;
20、0÷(-4)-42-(-8)÷(-1)3;
21、-32-(-3) 2-(-3)3+(-1)6;
24、3×(-2)2+(-2×3)2+(-2+3)2;
34、(-12)÷4×(-6)÷2;
(
36、(-12)÷4×(-6)÷2;
48、已知|a|=3,b的相反数为-5,求a-b的值。
49、当 时,求(2k2-4k-1)÷(k2+k+1)的值。
50、已知a>0,ab<0,化简|a-b+4|-|b-a-3|。
里有很多

可以简便要用简便.急。各位大哥大姐帮忙!

8分之7减6分之1减3分之2:把后面的被减数换到前面去先减
4减3分之1减4分之3减3分之2:4-(1/3+2/3)-3/4
11分之9加5分之1加11分之2加0.8:(9/11+2/11)+(1/5+4/5)
12分之11减(12分之1加2分之1):11/12-1/12-1/2
其它没什么简便的或者说简便不了多少

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