1+2+56+78+9
1+2+3+4+5+6+7+7+8+9+10+11+12+13+14+45+15+16+17+18+19+20+21-56+56+48+52+78+84+54+2545+455+1454+1256-23+56+586=
1+2+3+4+....-56+56+48.......-23+56+586=6928
3 +4+68+9+78+98+34+56+68+54+78
a)78*31+78*24+78*17+22*17
b)64*14+9*56
a) 78 . 31 + 78 . 24 + 78 . 17 + 22 . 17
= 78 . (31 + 24) + 17 . (78 + 22)
= 78 . 55 + 17 . 100
= 4290 + 1700
= 5990
b) 64 . 14 + 9 . 56
= 64 . 14 + 9 . 14 . 4
= 14 . (64 + 9 . 4)
= 14 . 100
= 1400
4+(3+9) +56 + 78 =
\(4+\left(3+9\right)+56+78\)
\(=\left(3+9\right)+\left(4+56\right)+78\)
\(=12+60+78\)
\(=60+\left(12+78\right)\)
\(=60+90\)
\(=150\)
2/3- 4/8= 5/8 +8/9 56/78:79/99
2/3-4/8=4/24;5/8+8/9=109/72;
Câu này dễ mà Đệt
1+2+3+4+5+6+7+8+9+10= 12+34+56+78+910= ai trả lời đúng được lì xì
1+2+3+4+5+6+7+8+9+10=55
12+34+56+78+910=1090
lì xì cho mình đi
1+2+3+4+5+6+7+8+9+10 = 55 12+34+56+78+910=1090
1+2+3+4+5+6+7+8+9+10
=(1+9)+(2+8)+(3+7)+(4+6)+10+5
=10+10+10+10+10+5
=55
12+34+56+78+910
=(12+78)+(34+56)+910
=90+90+910
=90+1000
=1090
50+50+50=?
569+89+90=?
12+12=?
78+78=?
4+7=?
6+8=?
9+0=?
56-43=?
50+50+50
=150
569+89+90
= Bao nhiêu í mik chưa tính
12 + 12
=24
78+78
= 156
4+7
=11
6+8
=14
9+0
=9
56-43
= 13
=150
=748
=24
=156
=11
=14
=9
=13
nho k cho minh nha
7*8+33-9-49+19-9+78/33=?
Từ:
7*8=?
56+33=?
89-9=?
80-49=?
49+19=?
68-9=?
79+78=?
157/33
23+x=78=456
x-56=78
x+56=56
Phần đầu mình không biết
x= 78-56
x= 22
x= 56-56
x=0
tk nha@@@@@@@@@@@@@@@@@@@
k cho minh di xong minh k lai cho bn nhanh thi dc nhe
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