出二十道六年级上册数学题/简便运算

如题所述

第1个回答  2016-03-24
1125-997 998+1246 431+3.2+532+6.8 1252-(172+25
2
) 400÷125÷8 25×(37×8)
=1125-(1000-3) =(998+2)+(1246-2) =(431+532)+(3.2+6.8)=1252-252-17
2
=400÷(125*8)=25*8*37
=1125-1000+3 =1000+1244 =10+10=20 =10-172=875 =400÷1000=5
2
=200*37=7400
=125+3=128 =2244
(41
-61)×12 143×2154×74 34×(2+3413) 125×8.8 4.35+4.25+3.65+3.75 3.4×99+3.4 =(246-244)*12 =47×2154×74 =34×2+34×3413 =125*(8+0.8) =(4.35+3.65)+(4.25+3.75)=3.4*(99+1)
=242*12 =(47×7
4)*2154 =68+13 =125*8+125*0.8 =8+8=16 =3.4*100=340 =1 =1*2154=215
4
=81 =1000+100=1100
2
17.15-8.47-1.53 17
65-343-465 97÷251+115×92
0.125×0.25×32 22.3-2.45-5.3-4.55 =17.15-(8.47+1.53) =1765-465-343 =97÷511+115×92 =81*41
*32 =22.3-5.3-(2.45+4.55)
=17.15-10 =13-343=941 =97*115+115×9
2
=1 =17-7=10
=7.15 =(97+92)×115=11
5

(1211+187+245)×72 4.25-365-(261-143) 187.7×11-187.7 4387×21+57.125×21-0.5 3415 ×(57 -314 ÷3
4 ) =1211×72+187×72+245×72 =441+143-(365+26
1) =187.7*(11-1) =4387×21+5781×21-21 =3415 ×(57 -3
14 *34) =11*6+7*4+5*3 =6-6=0 =1887 =21(4387+5781-1) =1549*(57 -72

=66+28+15 =21*100=50 =1549*73=5
7

=109
2.42÷4
3+4.58×311-4÷3 212 ×6.6+2.5×635 1178 -613 -123 4.6+325 +635 +5.4 2.8+549 +7.2+359 445 -(245 +5
12 )
=2.42*34+4.58×34-34*1 =221*653+221*653 =1178 -(613 +123 ) =453+352+653+55
2 =(2.8+7.2)+594+395= 445 -245 -5
12
=34(2.42+4.58-1) =221*2*653 =1178 -8=387 =453+552+(352+65
3)=10+9=19 =2- 5
12 =1127
=34
*6=8 =10+10=20望采纳O(∩_∩)O谢谢本回答被网友采纳