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a) 73 x 49 + 73 x 51 b) 22344 x 36 + 44688 x 82 c) 3 x 18 x 12 + 4 x 82 x 9 d) 36 x 28 + 36 x 82 +64 x 69 + 64 x 41
= 73 x (49 + 51) =804384 + 3664416 = 648 + 2952 = 36 x (28 + 82) + 64 x (69 + 41)
=73 x 100 =4468800 = 3600 = 36 x 110 + 64 110
=7300 = 110 x (36 x 64)
= 110 x 100
= 11000
a: =235-235+43+57=100
b: =82(-136-37)
=-173*82=-14186
c: =-5/15+12/15=7/15
d: =-33/18+10/18+17/12
=-23/18+17/12
=-46/36+51/36=5/36
1. -86 + ( -14)
= -86 - 14
= -100
2. 123 + ( -36)
= 123 - 36
= 87
3. ( -44) - ( -66)
= -44 + 66
= 22
4. -82 + (-28)
= -82 - 28
= -110
5. 83 + ( -17)
= 83 - 17
= 66
Các bài khác làm tương tự nha bạn
1/ (-86)+(-14)=-86-14=-100
2/123+(-36)=123-36=87
3/(-44)-(-66)=-44+66=22
4/-82+(-28)=-82-28=-110
5/83+(-17)=83-17=66
6/(-83)-33=(-83)+(-33)=-116
7/ 73+(-24)=73-24=49
8/84+(-48)=84-48=36
9/-72-82=-72+(-82)=-154
10/-97-82=-97+(-82)=-179
11/19+(-92)=19-92=-73
12/38-28=10
13/13+(-27)=13-27=-14
14/-85+29=-85-(-29)=-114
15/-84-(-27)=-84+27=-57
16/-23+78=-23-(-78)=-101
17/93+(-29)=93-29=64
18/-74-83=-74+(-83)=-157
19/-183+83=-183-(-83)=-266
20/849-(-3832)=849+3832=4681
Có gì sai mong bạn sửa giúp mình nhé!
1) \(373737.73-37.737373\)
\(=37.10101.73-37.73.10101\)
\(=0\)
2) \(19.41414141-41.19191919\)
\(=19.41.1010101-41.19.1010101\)
\(=0\)
3) \(123456.456789456789-456789.123456123456\)
\(=123456.456789.1000001-456789.123456.1000001\)
\(=0\)
4) \(250.12.7\)
\(=250.4.3.7\)
\(=\left(250.4\right).\left(3.7\right)\)
\(=1000.21\)
\(=21000\)
5) \(24.125.9\)
\(=3.8.125.9\)
\(=\left(3.9\right).\left(8.125\right)\)
\(=27.1000\)
\(=27000\)
6) \(125.44.18\)
\(=125.4.11.2.9\)
\(=\left(125.4.2\right).\left(11.9\right)\)
\(=1000.99\)
\(=99000\)
7) \(8.24.6+12.4.52+2.22.24\)
\(=48.24+48.52+48.22\)
\(=48\left(24+52+22\right)\)
\(=48.98\)
\(=48\left(100-2\right)\)
\(=48.100-48.2\)
\(=4800-96\)
\(=4704\)
8) \(18.58.2-9.27.4+12.69.3\)
\(=36.58-36.27+36.69\)
\(=36\left(58-27+69\right)\)
\(=36.100=3600\)
9) \(30.85.3+18.72.5-45.37.2-9.20.10\)
\(=90.85+90.72-90.37-90.20\)
\(=90\left(85+72-37-20\right)\)
\(=90.100=9000\)
...=-15-9=-24
...=4+7=11
...=-12-13=-25
...=13+10=23
...=-4-7=-11
...=-9+13=4
...=12+0=12
...=0-7=-7
...=0+3=3
...=15-17=-2
...=-6
...=-23
...=15-15=0
1: =72/90+65/90=137/90
2: =24/56-77/56=-53/56
3: =-7/10+4/5=1/10
4: =15/100-4/100=11/100
5: =4/6-5/6=-1/6
6: =10/40-15/40-76/40=-81/40
7: =-9/10+7/18
=-81/90+35/90=-46/90=-23/45
8: =27/90-55/90=-28/90=-14/45
9: =36/60-50/60-35/60=-49/60
10: =-4/9+5/6-3/8
=-32/72+60/72-27/72
=1/72
3.18.12 + 4.82.9
= 3.12.18 + 4.9.82
= 36.18 + 36.82
= 36.(18 + 82)
= 36.100
= 3600
3600