a)-215+|-38|-|-58|+90-85
b)62:4.|-3|-[26:22-(42+973)]
3.(-4)^2+2.(-5)-20
(-54)+(+39)-(+10)+(-85
5.(3)^2-14.(-8)+(-40)
(-24)+(-30)-(-40)
31-[26-(209+26)]
29-(-25)+(+40)
231+26-(209+26) BÀI TẬP TẾT NHIỀU QUÁ MONG MN
215+(-38)-(-58)+90-85 GIÚP ĐỠ THANK..........
21+22+23+24-11-12-13-14
215+(-38)-(-58)-(-58)-15
215+(-38)-(-58)+90-85
31-[26-(2017+35)]
A, (25-5).(-2) mũ 2 -31.(-7-13)
B, 215+ (-38) -(-58) +90 - 85
C, 26.(-125) -125 . (-36)
D.4. (-3) mũ 3 +2 . (-2)-20
a, = 20.4-31.(-20)
= 80+620
= 700
a.700
b.240
c.1250
d.-132
Tính
a) 215 + ( -38 ) - ( -58 ) + 90 - 85
b) 31 - [ 26 - ( 209 + 35 ) ]
c) 315 - ( 41 + 215 )
d) 917 - ( 417 - 65 )
cần gấp
a) 215 + (-38) - (-58) + 90 - 85
= 215 - 38 + 58 + 90 - 85
= 177 + 148 - 85
= 325 - 85
= 240
b) 31 - [26 - (209 + 35)]
= 31 - 26 - 209 - 35
= 5 - 209 - 35
= -204 - 35
= -239
c) 315 - (41 + 215)
= 315 - 41 - 215
= (315 - 215) - 41
= 100 - 41
= 59
d) 917 - (417 - 65)
= 917 - 417 + 65
= 500 + 65
= 565
a,215+(-38)-(-58)+90-85
=177-(-58)+90-85
=235+90-85
=325-85
=240
b,31-[26-(209+35)]
=31-[26-244]
=31-(-218)
=249
c,315-(41+215)
=315-256
=59
d,917-(417-65)
=917-352
=565
a)215+(-38)-(-58)+90-85
=177-(-58)+90-85
=235+90-85
=325-85
=240
b)31-(26-(209+35)
= 31-(26-244)
= 31-(-218)
= 249
c)315-(41+215)
= 315-256
=59
d)917-(417-65)
=917-352
=656
1+2+3+4+5+6+7+8+9+10+11+12+13+14+15+16+17+18+19+20+21+22+23+24+25+26+27+28+29+30+31+32+33+34+35+36+37+38+39+40+41+42+43+44+45+46+47+48+49+50+51+52+53+54+56+57+58+59+60+61+62+63+64+65+66+67+68+69+70=?
tính nhanh nếu có thể
A = -25.(35+147)+35.(25+147)
B=(-25).68+(-34).(-250)
215+(-38)-(- 58)+90-85
31-[26-(209+35)]
Tính
a) 215+(-38)-(-58)+90-85
b) 31-[(26-(209+35)]
c) (+33)-(-46)+(-32)-(+15)
d) (1267-196)-(267+304)
c) (-298)+(-300)+(-302)
Tính
a) 215+(-38)-(-58)+90-85
=177-(-58)+90-85
=235+90-85
=240
b) 31-[(26-(209+35)]
=31-[26-244]
=31-(-218)
=249
c) (+33)-(-46)+(-32)-(+15)
=79+(-32)-(+15)
=47-15
=32
d) (1267-196)-(267+304)
=1071-571
=500
c) (-298)+(-300)+(-302)
=-598+(-302)
=-900
**** mk nha
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