1. 160:{|-17|+[3^2.5-(14+2^11:2^8]}
2. 16.(38-2)-38.(16-1)
3. |-6|+(-7)+|-4|+(-3)
4. 26.(-125)-125.(-36)
5. 5^6:5^3-5^0.5^1.5^2
6. 125.(-24)+24.225
7. 21.135+21.65-200
8. 42+(-19)+58-(-19)
9. 100:{31-[24:(18-7.2)]}
10. 2^3.5-3^2.4+4.6
Những câu hỏi liên quan
Dạng 2 : Tính hợp lí1. 3.(-4)2 + 2.(-5) – 202. (- 54 ) + (+ 39) - ( +10) + ( - 85)3. 5.(-3)2 –14.(-8)+(-40)4. (- 24 ) + (- 30 ) - ( - 40)5. 31 – [26 – (209 + 35)]6. 29-(-25) + ( + 40)7. 231+26-(209+26)8. 215 + (-38) – (- 58) + 90 – 859. 21 + 22 + 23 + 24 – 11 – 12 – 13 – 1410. 215 +(-38) – (-58) –15 11. (-12).46 – 12.5412. 3784 + 23 – 3785 – 15 13. (-8).25.(-2). 4. (-5).125 14. 19.25 + 9.95 + 19.3015. (-50 +19 +143)...
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Dạng 2 : Tính hợp lí
1. 3.(-4)2 + 2.(-5) – 20 | 2. (- 54 ) + (+ 39) - ( +10) + ( - 85) |
3. 5.(-3)2 –14.(-8)+(-40) | 4. (- 24 ) + (- 30 ) - ( - 40) |
5. 31 – [26 – (209 + 35)] | 6. 29-(-25) + ( + 40) |
7. 231+26-(209+26) | 8. 215 + (-38) – (- 58) + 90 – 85 |
9. 21 + 22 + 23 + 24 – 11 – 12 – 13 – 14 | 10. 215 +(-38) – (-58) –15 |
11. (-12).46 – 12.54 | 12. 3784 + 23 – 3785 – 15 |
13. (-8).25.(-2). 4. (-5).125 | 14. 19.25 + 9.95 + 19.30 |
15. (-50 +19 +143) – (-79 + 25 + 48) | 16. (-25)(75 – 45) – 75(45 – 25) |
17. (-37 – 17). (-9) + 35. (-9 – 11) | 18. (187 -23) – (20 – 180) |
19. 512.(2 – 128) – 128.( - 512) | 20. 17.(-25) + 25.21 |
21. 160 : {|-17| + [32.5 – (14 + 211: 28)]} | 22. 16.(38 – 2) – 38(16 – 1) |
23. | -6 | + (-7) +| -4 | +(-3) | 24. 26.(- 125) – 125.( - 36) |
25. 56 : 53 – 50 . 51 . 52 | 26. 125.( -24) + 24.225 |
27. 21.135 + 21.65 – 200 | 28. 42+ (–19)+ 58 – (–19) |
29. 100 : {31 – [24 : (18 – 7.2)]} | 30. 23 . 5 – 32 . 4 + 4.6 |
Chỉ cần làm những câu chẵn thui nhaa!
6)\(-24)-30+40
=-54+40
=-14
hacker 2k6
Giải giúp mình nha:
1. Tính hợp lí:
1, 3. (-4 )2 + 2. (-5 ) -20 2, 31 - [26 - (209 + 35) ]
3, 231 + 26 - (209 + 26) 4, 19. 25 + 9. 95 + 19. 30
5, (-50 + 19 + 143) - (-79 + 25 +48) 6, 160 : {|-17 | + [ 32. 5 - (14 + 211 : 28)]}
7, |-6| + (-7) + | -4 | + ( -3 ) 8, 23 . 5...
Đọc tiếp
Giải giúp mình nha:
1. Tính hợp lí:
1, 3. (-4 )2 + 2. (-5 ) -20 2, 31 - [26 - (209 + 35) ]
3, 231 + 26 - (209 + 26) 4, 19. 25 + 9. 95 + 19. 30
5, (-50 + 19 + 143) - (-79 + 25 +48) 6, 160 : {|-17 | + [ 32. 5 - (14 + 211 : 28)]}
7, |-6| + (-7) + | -4 | + ( -3 ) 8, 23 . 5 - 32 . 4 + 4. 6
9, 56 : 53 - 50 . 51 . 52 10, 16. (38 - 2) - 38.(16 - 1)
Xin cảm ơn !!!
7: =6-7+4-3=0
8: =8x5-9x4+4x6=40-36+24=28
3: =231+26-209-26=22
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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
a, 5/11 + 1/2 + 2/5 + 6/11 + 3/4 + 16/25 + 5/16
b,19/4 + 37/100 + 1/8 + 132/25 + 5/2 + 37/12
c, 1313/1313 * 165165/143143 * 424242/151515
d, (121/122 * 123/125 + 127/129) * (1995/1996 * 17/16 - 21/25 : 16/17) * (42/30 * 75/23 - 19/23 * 210/38
Giải giúp mình nha:
1. Tính hợp lí:
1, 3. (-4 )2 + 2. (-5 ) -20
2, 31 - [26 - (209 + 35) ]
3, 231 + 26 - (209 + 26)
4, 19. 25 + 9. 95 + 19. 30
5, (-50 + 19 + 143) - (-79 + 25 +48)
6, 160 : {|-17 | + [ 32. 5 - (14 + 211 : 28)]}
7, |-6| + (-7) + | -4 | + ( -3 )
8, 23 . 5 - 32 . 4 + 4. 6
9, 56 : 53 - 50 . 51 . 52
10, 16. (38 - 2) - 38.(16 - 1)
Xin cảm ơn !!!
3: =231+26-209-26=22
4: =19(25+30+45)=19x100=1900
5: =-50+19+143+79-25-48
=-75+95+98
=98+20=118
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Bài 2: Tính hợp lí
1) 125.(-24) + 24.225
2) 512.(2 – 128) – 128. (-512)
3) (187 -23) – (20 – 180)
4) (-37 – 17). (-9) + 35. (-9 – 11)
5) (-50 +19 +143) – (-79 + 25 + 48)
6) (-8).25.(-2). 4. (-5).125
7) 3784 + 23 – 3785 – 15
8) 215 +(-38) – (-58) –15
9) 5.(-3)2 –14.(-8)+(-40)
10) 215 + (-38) – (- 58) + 90 – 852)
Bài 3*: Tìm các cặp số nguyên (x;y) thỏa mãn xy2 + 2x – y2 =
1) 125.(-24) + 24.225.
\(=24\left(-125+225\right)=24.100=2400.\)
2) 512.(2 – 128) – 128. (-512).
\(=512\left(2-128+128\right)=512.2=1024.\)
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Bài 1: Tính nhanh
a, 5/11 + 1/2 + 2/5 + 6/11 + 3/4 + 16/25 + 5/16
b,19/4 + 37/100 + 1/8 + 132/25 + 5/2 + 37/12
c, 1313/1313 * 165165/143143 * 424242/151515
d, (121/122 * 123/125 + 127/129) * (1995/1996 * 17/16 - 21/25 : 16/17) * (42/30 * 75/23 - 19/23 * 210/38)
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
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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#
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=?
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=1275
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