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![](https://rs.olm.vn/images/avt/0.png?1311)
Trả lời:
(-65)-(-37)
= (-65)+37
=-28
(-159)-280:(-7)
=(-159)-(-40)
=(-159)+40
=-119
(-12).\(3^2\)+240:\(\left(-2\right)^2\)
=-108+60
=-48
\(5.\left(-2\right)^3-36:3^2\)
=\(-40-4\)
=\(-44\)
\(128-\left[68+8.\left(35-37\right)^2\right]:\left(-4\right)\)
=\(128-\left[68+8.4\right]:\left(-4\right)\)
=\(128-\left[68+32\right]:\left(-4\right)\)
=\(128-100:\left(-4\right)\)
=\(128-\left(-25\right)\)
=\(153\)
\(-141+3^3+\left(-2\right)^2\)
=\(-141+9+4\)
=\(-132+4\)
=\(-128\)
chúc bạN HOK TỐT
1)(-65)-(-37)=-28
2)(-159)-280:(-7)
=(-159)-(-40)
=-119
3)(-12).3\(^2\)+240:(-2)\(^{^2}\)
=-108+60
=-48
4)5.(-2)\(^3\)-36:3\(^2\)
=-40-4
=-44
5) 128-[68+8.(35-37)2]:(-4)
=128-[68+8.-2\(^2\)]:(-4)
=128-[68+32]:(-4)
=128-100:(-4)
=128-(-25)
=153
6)-141+3\(^3\)+(-2)\(^2\)
=-114+4
=-110
![](https://rs.olm.vn/images/avt/0.png?1311)
\(\left(-65\right)-\left(-37\right)=\left(-65\right)+37=-\left(65-37\right)=-28\)
\(\left(-159\right)-280\div\left(-7\right)=\left(-159\right)-\left(-40\right)=-119\)
\(\left(-12\right).3^2+240\div\left(-2\right)^2=\left(-12\right).9+240\div4=\left(-108\right)+60=-48\)
\(5.\left(-2\right)^3-36\div3^2=5.\left(-8\right)-36\div9=\left(-40\right)-4=-44\)
\(128-\left[68+8.\left(35-37\right)^2\right]\div\left(-4\right)=128-\left[69+8\left(-2\right)^2\right]\div4\)
\(=128-\left(69+8.4\right)\div4=128-101\div4=128-25,25=102,75\)
\(\left(-141\right)+3^3+\left(-2\right)^2=\left(-141\right)+27+4=\left(-141\right)+31=-110\)
![](https://rs.olm.vn/images/avt/0.png?1311)
1. ( -37 ) + 14 + 26 + 37
=(-37+37)+(14+26)
=0+30
=30
2. ( -24 )+ 6 + 10 + 24
=(-24+24)+(6+10)
=0+16
=16
3. 15 + 23 + ( -25 ) + ( -32 )
=[15+(-25)]+[23+(-32)]
=-10+(-9)
=-19
4. 60 + 33 + ( -50 ) + ( -33 )
=[60+(-50)]+[33+(-33)]
=10+0
=10
5. (- 16 ) + ( -209 ) + ( -14 ) + 209
=[-16+(-14)]+(-209+209)
=-30+0
=-30
6. (- 12 ) + ( -13 ) + 36 + ( -11 )
=[-12+(-11)]+(-13+36)
=-23+23
=0
7. - 16 + 24 - 16 - 34
=(24-34)-16-16
=-10-16-16
=-42
8. 25 + 37 - 48 - 25 - 37
=(25-25)+(37-37)-48
=0+0-48
=-48
9. 2575 + 37 - 48 - 25 - 37
=(2575-25)+(37-37)
=2550+0
=2550
10. 34 + 35 + 36 + 37 - 14 - 15 - 16 - 17
=(34-14)+(35-15)+(36-16)+(37-17)
=20+20+20+20
=20.4
=80
cái này giống BTVN của mk,nhưng dễ mak,tự làm đc mak
cố lên
![](https://rs.olm.vn/images/avt/0.png?1311)
a) (135 - 35) . (-37) + 37 . (-42 - 58)
= 100 . 0 . (-100)
= 0
b) -65 . (87 - 17) - 87 . (17 - 65)
= -65 . 70 - 87 . (-48)
= -4550 - 135
= -4415
![](https://rs.olm.vn/images/avt/0.png?1311)
10) 37.(27+25)-27.(37+25)=37.27+37.25-27.37-27.25
=37.25-27.25=25(37-27)=25.10=250
11)3.(-5+3)+7(2+5)=3.(-2)+7.7=-6+49=43
12)-3.(2-7)-6(8-5)=-3.(-5)-6.3=15-18=-3
![](https://rs.olm.vn/images/avt/0.png?1311)
Bài 2: Tính nhanh
a) 29 + 132 + 237 + 868 + 3
= 29+(132+858)+(237+3)
=29+990+240
=1259
![](https://rs.olm.vn/images/avt/0.png?1311)
(-12)+(-35)+(-8)
=[(-12)+(-8)]+(-35)
=(-20)+(-35)
=-55
(-37)+65+(-12)+(-1)
={(-37)+[(-12)+(-1)]}+65
=[(-37)+(-13)]+65
=-50+65
=15
tick nha
(-12)+(-35)+(-12)
=[(-12)+(-8)]+(-35)
=(-20)+(-35)
=-55
(-37)+65+(-12)+(-1)
=[(-37)+(-12)+(-1)]+65
=-50+65
=15
(-65)-(-37)=(-65)+37= -28
(-12).32+240:(-2)2=(-12).9+240:4=(-108)+60= -48