递等式计算,能简便算的要简便算,要过程。
接下
=2.7÷8÷0.27
=(2.7÷0.27)÷8
=10÷8
=1.25
1.85x4.3+67x0.185-1.85
=1.85x4.3+6.7x1.85-1x1.85
=1.85x(4.3+6.7-1)
=1.85x(11-1)
=1.85x10
=18.5
154.45-(5.46+54.45)-4.54
=154.45-5.46-54.45-4.54
=(154.45-54.45)-(5.46+4.54)
=100-10
=90
1.35+6.8+8.65+13.2 递等式计算。(能简算的要简算)
你好同学,这个题目的答案是30。分析:简便运算就对运算律的灵活运用,这个题目用到加法交换律和加法结合律。我们观察一下题目中的四个数,不难发现1.35与8.65的和是整数10,先把这两个数结合计算。6.8与13.2的和是整数20,再把这两个数结合计算。再用10加20得最后结果30。具体题目计算过程如下...
用递等式计算,能简便的要简便 8400÷25?
原式=336
递等式计算能简便的就简便 99+998+9997+6
99+998+9997+6 =100+1000+10000-1-2-3+6 =100+1000+10000 =11100 ~如果你认可我的回答,请及时点击【采纳为满意回答】按钮~~手机提问的朋友在客户端右上角评价点【满意】即可。~你的采纳是我前进的动力~~O(∩_∩)O,互相帮助,祝共同进步!
递等式计算能简便的要简便18+37x18,加18x62?
递等式简便计算过程方法如下 解:18+37×18+18×62 =18×(1+37+62)=18×100 =1800
递等式计算,能简便计算的要用简便计算。请全部完成,快快快快!
回答:原式=6.4*(0.29+1+8.71)=6.4*10=64 原式=1.2*1.2*1=1.44
递等式计算,能简便的简便,应用题
1,少符号 2,=4-[(2\/6+5\/6)×3\/7]=4-[7\/6×3\/7]=4-1\/2=3.5 3,=72\/5=14.4 4,=(9+9×14-18)\/13=9×13\/13=9 5, 77\/100,循环小数的话是7\/9 6, 3×5×7=105,105×5=525,525-3=522 7,(180+240)÷7\/9=540 8, 3\/8 9, 7\/12=1\/3+1\/6+1\/12 10,...
用递等式计算(能简便的要简便). 71×19+322÷23 [540-(89-21)]×45...
(1)71×19+322÷23=1349+14=1363;(2)[540-(89-21)]×45=[540-68]×45=472×45=21240;(3)7000÷25=7000÷100×4=70×4=28;(4)34×28+34×72=34×(28+72)=34×100=3400;(5)120+480÷(83-23)=120+480÷60=120+8=128;(6)4000÷125=4000÷1000×8=4×...
76×91÷38(递等式计算能巧算的要巧算)?
简便计算如下,首先将38转化为76÷2,所以原式=76×91÷(76÷2)=76*91÷76*2=91*2=182
2.35ⅹ4.64+2.35递等式计算能简便的就用简便方法?
递等式的计算方式一般是,在一道题中如果只有加减,则从左往右依次计算;如果有加减乘除,则先乘除后加减;如果有括号,则先算括号里的,然后要按照顺序一步一步下下来,最终得出答案。2.35ⅹ4.64+2.35 =2.35X(4.64+1)=2.35X5.64 =13.254。
奚桑力蜚:[答案] +++ =(+)+(+) =1+1 =2 2-(-) =2-+ =2+ =2 +-- =(+)-(+) =1-1 = ++ =+ =1 --- =(-)-(+) =-1 = +-+ =(-)+(+) =1
杭州市13873925654: 递等式计算(能简便的要简便) 0.11*1.8+8.2*0.11 2.34*99+2.345.4÷2.7*0.8132*101 6.25÷1.25÷0.8 2.5*16. - ?
奚桑力蜚:[答案] ①0.11*1.8+8.2*0.11, =0.11*(1.8+8.2), =0.11*10, =1.1; ②2.34*99+2.34, =2.34*(99+1), =2.34*100, =234; ③5.4÷2.7*0.8, =2*0.8, =1.6; ④132*101, =132*(100+1), =132*100+132, =13332; ⑤6.25÷1.25÷0.8, =6.25÷(1.25*0.8), =6.25÷1, =6.25; ⑥2.5*16, ...
杭州市13873925654: 递等式计算:(能简便的要简便运算) 3.75 - 0.75*4 14.32 - 4.32÷2.4 150÷1.25 9.8*2.8+28*0.0140.32÷24+69.2*8.450.9÷0.125 - ?
奚桑力蜚:[答案] 3.75-0.75*4=3-0.75*3=3*(1-0.75)=3*0.25=0.75 14.32-4.32+2.4=(14.32-4.32)+2.4=10+2.4=12.4 150/1.25=150/(5/4)=150*(4/5)=120 9.8*2.8+28*0.01=28*(0.98+0.01)=28*0.99=28*(1-0.01)=28-0.28=27.72 40.32÷24+69.2*8.4=1.68+581.28=582.96 50.9÷...
杭州市13873925654: 递等式计算(能简算的要简算)4÷(2.7*4) 0.4*1.43*2.5 7.95*101 - 7.95175÷0.25÷0.4 9.4*[0.96÷(5.4÷0.9)] 52÷6.5+26*0.37 - ?
奚桑力蜚:[答案] 4÷(2.7*4) =4÷2.7÷4 =1÷2.7 =0. • 37 • 0 0.4*1.43*2.5 =0.4*2.5*1.43 =1*1.43 =1.43 7.95*101-7.95 =7.95*(101-1) =7.95*100 =795 175÷0.25÷0.4 =175÷(0.25*0.4) =175÷0.1 =1750 9.4*[0.96÷(5.4÷0.9)] =9.4*(0.96÷6) =9.4*0.16 =1.504 52÷6.5+26*0.37...
杭州市13873925654: 递等式计算,能简便计算的就简便计算(2题,)(1) (六分之五 - 十二分之七*十四分之十五)÷四分之五 (2) 二十一分之二十六 - 五分之一 - 九分之八÷九分... - ?
奚桑力蜚:[答案] (1) (5/6-7/12*15/14) / 5/4 =(5/6-5/8) / 5/4 =5/24 / 5/4 =1/6 (2)26/21-1/5-8/9 / 10/9 =26/21-1/5-4/5 =26/21-(1/5+4/5) =26/21-1 =5/21
杭州市13873925654: 用递等式计算(能简便计算的要简便计算)(1)3300÷(20*33)(2)64*125*25. - ?
奚桑力蜚:[答案] (1)3300÷(20*33) =3300÷33÷20 =100÷20 =5 (2)64*125*25 =8*4*2*125*25 =(8*125)*(25*4)*2 =1000*100*2 =200000
杭州市13873925654: 递等式计算,能简便的要简便.283+17*50 64000÷250 47*53+47*47 3100÷627500÷(25*15)300 - [(195 - 168)*... - ?
奚桑力蜚:[答案] (1)283+17*50 =283+850 =1133; (2)64000÷250 =64*(1000÷250) =64*4 =256; (3)47*53+47*47 =47*(53+47) =47*100 =4700; (4)3100÷62 =3100÷31÷2 =100÷2 =50; (5)7500÷(25*15) =7500÷25÷15 =300÷15 =20; (6)300-[(195-168)*15-195] =300-[27*...
杭州市13873925654: 递等式计算,能简算的要简算,并写出主要计算过程. ①6.8*0.56+0.44*6.8②44*2.5*0.9③7.2÷0.5÷0.2④(16+1.48÷3.7)÷0.82. - ?
奚桑力蜚:[答案]①6.8*0.56+0.44*6.8, =6.8*(0.56+0.44), =6.8*1, =6.8; ②44*2.5*0.9, =(4*11)*2.5*0.9, =(4*2.5)*(11*0.9), =10*9.9, =99; ③7.2÷0.5÷0.2, =7.2÷(0.5*0.2), =7.2÷0.1, =72; ④(16+1.48÷3.7)÷0.82, =(16+0.4)÷0.82, =16.4÷0.82, =20.
杭州市13873925654: 递等式计算(能简便运算的要用简便方法计算)5.2乘以4.5加上4.5乘以3.8加上4.5 - ?
奚桑力蜚:[答案] 5.2乘以4.5加上4.5乘以3.8加上4.5 =4.5*(5.2+3.8+1) =4.5*10 =45; 有帮助请记得好评,新问题请重新发帖提问,谢谢!(*^__^*) ……
杭州市13873925654: 递等式计算,能简便的简便,要写出过程(1)8*19*12.5(2)(1/3+7/12)÷2/3(3)(7/8 - 2/3+1/6)*24(4)4/9*【3/4+(5/12 - 1/3)】(5)【0.75 - (2/5+0.15)】*5/8 - ?
奚桑力蜚:[答案] (1)8*19*12.5 =8x12.5x19 =100x19 =1900 (2)(1/3+7/12)÷2/3 =11/12÷2/3 x=11/8 (3)(7/8-2/3+1/6)*24 =7/8x24-2/3x24+1/6x24 =21-16+4 =9 (4)4/9*【3/4+(5/12-1/3)】 =4/9x(3/4+1/12) =4/9x2/3 =8/27 (5)【0.75-(2/5+0.15)】*5/8 =(0.75-0.4-0.15)x5/8 =0.2x5/...