82×40+18×14+3×26×6
Thực hiện phép tính
(-23). (-3). (+4). (-7)
2.8.(-14).(-3)
(-34) +(-91)+(-26)+(-99)
|-82|+(-120)
(26–6). (-4)+31.(-7–13)
125+|-25|
|-26|+|-34|
(-275) +|-115|
(-34) +|-34|
(-18). (55–24)–28.(44–68)
=-(23.3.4.7)=-1932
=2.8.14.3=672
=-(34+26+91+99)=-250
=82+(-120)=-(120-82)=-38
=20.(-4)+31.(-20)=20.(-4-31)=20.(-35)=-700
=125+/-25/=125+25=150
=26+34=60
=(-275) +115=-160
=(-34)+34=0
=-18.31-28.(-24)=-555+672=114
Câu 6 :Tính:
a. (-60) + 14
b. (-26) + 16 + 34 + (-24)
c) 79 - (79 - 2021)
d.(-24).82 + (-24).18
bài toán : Tính nhanh
26+17+23+14=? 46+82+18+54=? 56-3+53-6=?
26+17+23+14=80
46+82+18+54=200
56-3+53-6=100
HỌC TỐT
sai rồi phải mở ngoạc chứ sai rùi đó
26+17+23+14 = ( 26 + 14 ) + ( 17 + 23 ) = 40 + 40 = 80
46 + 82 + 18 + 54 = ( 46 + 54 ) + ( 82 + 18 ) = 100 +100 = 200
56 - 3 + 53 - 6 = 56 - 6 + 53 - 3 = 50 + 50 = 100
Bài 1Tinh1 hợp lí
1) 2575 + 37 - 2576 -29
2) 35 + 35 + 36 +37 - 14 -15 -16 -17
3) 13. (-12) +87 .(-12)
4) 26 .17+17 .74
5) 25 . (-18) + 25 (- 82)
6) 25+37- 48 - 25 - 37
7) (-16) + 24 + 16 - 34
\(2575+37-2576-29\)
\(=2612-2576-29\)
\(=36-29=7\)'
\(35+35+36+37-14-15-16-17\)
\(=70+\left(36-16\right)+\left(37-17\right)-14-15\)
\(=70+20+20-14-15\)
\(=90+6-15\)
\(=96-15=81\)
\(13\cdot\left(-12\right)+87.\left(-12\right)\)
\(=\left(-12\right)\cdot\left(13+87\right)\)
\(=\left(-12\right)\cdot100=-1200\)
\(26\cdot17+17\cdot74\)
\(=\left(26+74\right)\cdot17\)
\(=100\cdot17=1700\)
\(25\cdot\left(-18\right)+25\left(-82\right)\)
\(=25\cdot\left[\left(-18\right)+\left(-82\right)\right]\)
\(=25\cdot\left(-100\right)=\left(-2500\right)\)
\(25+37-48-25-37\)
\(=\left(25-25\right)+\left(37-37\right)-48\)
\(=0+0-48\)
\(=0-48=\left(-48\right)\)
\(\left(-16\right)+24+16-34\)
\(=\left[\left(-16\right)+16\right]+\left(24-34\right)\)
\(=0+\left(-10\right)=\left(-10\right)\)
Bµi 1 1 37064 – 64 x 82 42966 217 2 320 – 120.5 95,25 5,25 874 12 x 12,53 132 x 9 132 4 48 x 17 48 x 3 5 56 x 27 56 x 35 62 6 45 x 48 – 90 x 24 145 7 754 x 75 – 2262 x 25 4568 8 1050 15 – 350 5 1769 4320 9 – 8640 18 750 10 316 192 384 321 108 11 24 25 26 ….. 124 125 126 12 154 – 153 152 – 151 150 – 149 ….. 4 – 3 2 – 113 37 x 38 – 19 x 74 1000 14 0.48 x 500 – 2.4 x 40 x 2
4.24.5^2-(3^3.18+3^3.12)
31.15.7^2.4-31.49.40
1+2+3+4+5+6+7+8+9+10
1+3+5+7+9+11+13+15+19
2+6+10+14+22+23+26+34
5+8+11+14+17+20+23+26+29
1+6+11+16+21+26+31+36+41+47+51
10+13+16+19+22+25+28+31+34+37+40
5+7+9+11+13+15+17+3+8+13+18+23+28
4+7+10+13+16+19+5+9+13+17+21+25
4.24.52-(33.18+33.12)
=4.24.25-[27.(18+12)]
=(4.25).24-[27.30]
=100.24-810
=2400-810
=1590
4.24.5^2-(3^3.18+3^3.12)
31.15.7^2.4-31.49.40
1+2+3+4+5+6+7+8+9+10
1+3+5+7+9+11+13+15+19
2+6+10+14+22+23+26+34
5+8+11+14+17+20+23+26+29
1+6+11+16+21+26+31+36+41+47+51
10+13+16+19+22+25+28+31+34+37+40
5+7+9+11+13+15+17+3+8+13+18+23+28
4+7+10+13+16+19+5+9+13+17+21+25 = 1590
#HT#
tính hợp lý
a)5.(-3)^2-14.(-8)+(-40)
b)31-[26-(209+35)]
c)237+26-(209+26)
d)21+22+23+24-11-12-13-14
e)(-12).46-12.54
g)(-8).25.(-2).4.(-5).125
h)(-50+19+143)-(-79+25+48)
i)(-37-17).(-9)+35.(-9-11)
k)512.(2-128)-128.(-512)
l)160:{|-17|+[3^2.5-(14+2^11:2^8)]
m)|-6|+(-17)+|-4|+(-3)
n)5^6:5^3-5^0.5^1.5^2
o)100:{31-[24:(18-7.2)]}
k)
Mình lớp 4 mà bạn
Với lại là bằng :
6''675
7785.,77
664'87'9776''8
2+4+6+8+10+12+14+16+18+20+22+24+26+28+30+32+34+36+38+40+42+44+46+48=??
nhanh mk tk, đưg quên kb vs mk nha
600 nha !
mik rất thích bài hát "Chưa bao giờ mẹ kể"
k mik nhé
2 + 4 + 6 + 8 + 10 + 12 + 14 + 16 + 18 + 20 + 22 + 24 + 26 + 28 + 30 + 32 + 34 + 36 + 38 + 40 + 42 + 44 + 46 + 48 = 600
k em nha
SSH là:
(48-2):2+1=24(SSH)
Tổng dãy số là:
(48+2).24:2=60
Đ/s:.......
Cho mk 1 L-I-K-E nha! ^_^
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 * 55 * 56 * 57 * 58 * 59 * 60 * 61 * 62 * 63 * 64 * 65 * 66 * 67 * 68 * 69 * 70 * 71 * 72 * 73 * 74 * 75 * 76 * 77 * 78 * 79 * 80 * 81 * 82 * 83 * 84 * 85 * 86 * 87 * 88 * 89 * 90 * 91 * 92 * 93 * 94 * 95 * 96 * 97 * 98 * 99 * 100 bằng bao nhiêu?