123+123-246+10-5+20+15=............................................................................................
1+2+3+4+5=
123+571=
109+248=
190-123=
187-152=
123+246=
15
694
357
67
35
369
1+2+3+4+5=15
123+571=694
109+248=357
190-123=67
187-152=35
123+246=369
123 x x : 123 = 246
123 x X : 123 = 246
X = 246 x 123 : 123
X = 246
Vậy X = 246
ỦNG HỘ NHA MỌI NGƯỜI !!! MIZUKI TAKAHASHI !!! ^^
01234-1230+123+123-246=???????????????????????????????/
01234-1230+123+123-246=00004
K MK NHA
THANKS
CHÚC BẠN HỌC GIỎI
=4
chúc bn học giỏi nhé!
k mk nha bn!
Kết quả của phép tính − 123 + 80 − 80 + 123 là:
A. 0
B. -123
C. -246
D. -160
bài 1
a) -37+54+/-70/+/-163/+246
b)-359+181+/-123/+350+/172/
c)-69+53+46+/-94/+/-14/+78
d)11+/-13/+15+/-17/+19+/-21/
e)-12+16+/-16/+20+/-20/+24
7-8-9-10-11+123
-9+15-20+17
6 phần 7 + 5 phần 8:5-3 phần 16.(-22)
7-8-9-10-11+123=-31+123=92
-9+15-20+17=3
6/7+5/8:5-3/16.(-2)2=6/7+1/8-3/16.4=6/7+1/8-3/4=(48+7-42)/56=13/56
1.Tính nhanh nếu có thể:
1) (+15)+(+17)
2) (-3)+(-7)
3) (-25)+(+4)
4) (-6)+(-54)
5) (-15)+20
6)(-5)+8+7+5
7) (-8)+(-11)+(-2)
8) 15+(-5)+(-14)+(-16)
9) (-20)+(-14)+3+(-86)
10)(-136)+123+(-264)+(-83)+240
11) (-596)+2001+1999+(-404+189)
12, ( 314 + ( -153) +64 +121+(-247)+218
1) \(\left(+15\right)+\left(+17\right)=15+17=32\)
2) \(\left(-3\right)+\left(-7\right)=-3-7=-\left(3+7\right)=-10\)
3) \(\left(-25\right)+\left(+4\right)=-25+4=-\left(25-4\right)=-21\)
4) \(\left(-6\right)+\left(-54\right)=-6-54=-\left(6+54\right)=-60\)
5) \(\left(-15\right)+20=20-15=5\)
6) \(\left(-5\right)+8+7+5\)
\(=\left(-5+5\right)+\left(8+7\right)\)
\(=15\)
7) \(\left(-8\right)+\left(-11\right)+\left(-2\right)\)
\(=\left[\left(-8\right)+\left(-2\right)\right]+\left(-11\right)\)
\(=\left(-10\right)+\left(-11\right)\)
\(=-21\)
8) \(15+\left(-5\right)+\left(-14\right)+\left(-16\right)\)
\(=\left[15+\left(-5\right)\right]+\left[\left(-14\right)+\left(-16\right)\right]\)
\(=10+\left(-30\right)\)
\(=-20\)
9) \(\left(-20\right)+\left(-14\right)+3+\left(-86\right)\)
\(=\left[\left(-20\right)+3\right]+\left[\left(-14\right)+\left(-86\right)\right]\)
\(=\left(-17\right)+\left(-100\right)\)
\(=-117\)
10) \(\left(-136\right)+123+\left(-264\right)+\left(-83\right)+240\)
\(=\left[\left(-136\right)+\left(-264\right)\right]+\left[123+\left(-83\right)\right]+240\)
\(=\left(-400\right)+40+240\)
\(=\left(-360\right)+240\)
\(=-120\)
11) \(\left(-596\right)+2001+1999+\left(-404+189\right)\)
\(=\left(-596\right)+2001+1999-404+189\)
\(=\left[\left(-596\right)-404\right]+\left(2001+189\right)+1999\)
\(=\left(-1000\right)+2190+1999\)
\(=1190+1999\)
\(=3189\)
12) \(314+\left(-153\right)+64+121+\left(-247\right)+218\)
\(=\left(314+64+121\right)+\left[\left(-153\right)+\left(-247\right)\right]+218\)
\(=\left(378+121\right)+\left(-400\right)+218\)
\(=499-400+218\)
\(=99+218\)
\(=317\)
\(\text{#}Toru\)
Tính nhanh:
a) -37 +54 +(- 70)+(- 163)+246
b)-359 +181+(-123)+350+(-172)
c)-69 +53 + 46 +(- 94)+(- 14) + 78
d)13 -12 +11 +10 -9 + 8 -7 -6 +5 - 4 +3 +2 -1
a: =17-70-163+246
=-43-163+246
=246-206
=40
Câu 1: Tính
a, ( -14 ) + 5 + 17 + 14
b, 40 + 13 + ( -25 ) + ( -13 )
c, ( -5 ) + ( -146 ) + ( -15 ) + 14
d, ( -2 ) + ( -5 ) + 20 + ( -13 )
Câu 2: Tính
a, ( 123 - 37 ) - 123
b, ( -224 ) - ( 34 - 224 )
c, 126 - ( 126 - 33 )
d, ( -53 23 ) - ( 567 - 53 )
Câu 1:
a:=17+5=22
b: =40-25=15