200+100+120+300=?
Tính các tổng sau:
a)[(-8)+(-7)]+(-10)
b) 555 – (-333) – 100 – 80
c) – (-229) + (- 219) – 401 +12
d)300 – (-200) – (-120) + 1
\(a.\left[\left(-8\right)+\left(-7\right)\right]+\left(-10\right)=\left(-15\right)+\left(-10\right)=-25\)
\(b.555-\left(-333\right)-100-80=\left(555+333\right)-\left(100+80\right)=888-180=708\)
\(c.-\left(-229\right)+\left(-219\right)-401+12=\left(229-219\right)-\left(401-12\right)=10-389=-379\)
\(d.300-\left(-200\right)-\left(-120\right)+1=\left(300+200\right)+\left(120+1\right)=500+121=621\)
tính :
d, 555 - ( -33 ) - 100 - 80
e, -( - 229 ) + ( -219 ) - 401 + 12
f, 300 - ( -200 ) - ( -120 ) + 18
Trl:
d) \(555-\left(-33\right)-100-80\)
\(=588-20\)
\(=568\)
e) \(-\left(-229\right)+\left(-219\right)-401+12\)
\(=10-413\)
\(=403\)
f) \(300-\left(-200\right)-\left(-120\right)+18\)
\(=500-\left(-102\right)\)
\(=602\)
Hc tốt
d)555-(-33)-100-80
=555+33-100-80
=588-100-80
=488-80
=408
e)-(-229)+(-219)-401+12
=10-401+12
=-391+12
=-379
f) 300-(-200)-(-120)+18
=500-(-120)+18
=620+18
=638
K CHO MÌNH NHA !
d) =408
e)=-379
f)=638
Tính các tổng sau:
(-8)+(-7)+(-10)
(-229)+(219)-401+12
555-(-333)-100-80
300-(-200)-(-120)+18
\(\left(-8\right)+\left(-7\right)+\left(-10\right)\)
\(=-8-7-10\)
\(=-15-10=-25\)
\(\left(-229\right)+219-401+12\)
\(=\left(219-229\right)-401+12\)
\(=-10-401+12\)
\(=-399\)
\(555-\left(-333\right)-100-80\)
\(=555+333-100-80\)
\(=888-100-80\)
\(=780-80=700\)
\(300-\left(-200\right)-\left(-120\right)+18\)
\(=300+200+120+18\)
\(=500+120+18\)
\(=620+18\)
\(=638\)
100+100+200+200+300+300=
100 + 100 + 200 + 200 + 300 + 300
= 200 + 200 + 200 + 300 + 300
= 400 + 200 + 300 + 300
= 600 + 600
= 1200
Tính tổng:
A, [(-8)+(-7)]+(-10)
B, -555-(-333)-100-80
C, -(-229)+(219)-401+12
D, 300-(-200)-(-120)+18
a) = (-15)+(-10)
= -25
b) = (-222)-100-80
= (-322)-80
= -402
c) = 229+219-401+12
= 448-401+12
=47+12
= 59
d) = 500-(-120)+18
= 620+18
= 638
100+100=?
200+200=?
300+300=?
\(100+100=200\)
\(200+200=400\)
\(300+300=600\)
Nhớ ấn đúng cho mình nhé! Chúc bạn học tốt!
100 + 100 + 200 + 200 + 300 + 300 + 400 + 400
300:6+120:2.......222:2+300-200+150 điền dấu
Dấu < nha bạn.
Tính.
a) 200 mm + 100 mm 300 mm – 100 mm 200 mm x 3 600 mm : 3
b) 300 g + 200 g 200 g × 5 500 g – 300g 1000g : 5
c) 400 ml + 300 ml 800 ml : 4 700 ml – 300 ml 200 ml x 4
a) 200 mm + 100 mm = 300 mm 300 mm – 100 mm = 200 mm |
200 mm x 3 = 600 mm 600 mm : 3 = 200 mm |
b) 300 g + 200 g = 500 g | 200g x 5 = 1 000g | 500g – 300g = 200g | 1 000g : 5 = 200g |
c)
400 ml + 300 ml = 700 ml
800 ml : 4 = 200 ml
700 ml – 300 ml = 400 ml
200 ml x 4 = 800ml