tính nhanh
(-27) . (-28) + -(27).128
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The nutrition chat included in the monument
1 coverage of nutrition chat when you are covered
- listen to the song
Do not soak the salmon meat when cutting the meat because the stock and good birth goats are lost
Through picture 3.17em, the potential of the fish meat ingredients should be covered and recorded
a 86+14+357=100+357=457
b 72+128+69=200+69=269
c (25.4).(5.2).4.27
=100.10.4.27
=1000.4.27
=4000.27=64000
d 28. (64+36)=28.100=2800
nha
a) 86 + 357 + 14 b ) 72 + 69 +128
= ( 86 + 14 ) + 357 = ( 72 + 128 ) + 69
= 100 + 357 = 200 + 69 = 269
= 457
c) 25 . 5 . 4 . 27 .2
= ( 25.4).(5.2).27
= 100 x 10 x 27
= 1000 x 27
= 27 000
d) 28.64+28.36
= 28 . ( 64 + 36 )
= 28.100
= 2800
a) 27.(-109) + 27.(-19) + (-128).73
= 27.(-109 - 19) - 128.73
= 27.(-128) - 128.73
= (-128).(27 + 73)
= -128.100
= -12800
b) 3.5² - 16 : 2²
= 3.25 - 16 : 4
= 75 - 4
= 71
a) 86 + 357 + 14
= ( 86 + 14 ) + 357
= 100 + 357
= 457
b) 72 + 69 + 128
= ( 72 + 128 ) + 69
= 200 + 69
= 269
c) 25 . 5 . 4 . 27
= ( 25 . 4 ) . 5 . 27
= 100 . 5 . 27
= 500 . 27
= 13500
d) 28 . 64 + 28 . 36
= 28 . ( 64 + 36 )
= 28 . 100
= 2800
a)
\(86+357+14=\left(86+14\right)+357=100+357=457\)
b)
\(72+69+128=\left(72+128\right)+69=200+69=269\)
c)
\(25.5.4.27.2=\left(25.4\right).\left(5.2\right).27=100.10.27=27000\)
d)
\(28.64+28.36=28.\left(64+36\right)=28.100=2800\)
48/41 + 45/27 + 34/28 + 37/23 - 18/27 - 6/28 - 7/41 - 14/23
= (48/41 - 7/41) + (45/27 - 18/27) + (34/28 - 6/28) + (37/23 - 14/23)
= 1 + 1 + 1 + 1
= 4
a ) 4 7 + 2 7 + 1 7 + 3 4 + 5 4 = 3 b ) − 5 7 + − 2 7 + − 1 5 + 3 4 + 1 4 = − 1 5
c ) 5 13 + 8 13 + − 5 7 + − 20 41 + − 21 41 = − 5 7 d ) 1 28 + 3 28 + 3 14 + − 1 14 + − 1 7 = 1 7 e ) 1 2 + − 1 2 + − 2 3 + 2 3 + 3 4 + − 3 4 + − 4 5 + 4 5 + 5 6 + − 5 6 = 0
1.s= (27+33) + (28+32) + (29+31) + (26+30)
s= 60 + 60 + 60 + 56
s= 60 . 3 + 56
s= 180 + 56
s= 236
(-27).(-28) + (-27).128
= (-27).(-28 + 128)
= (-27).100
= - 2700
Chúc bạn học tốt
(- 27) . (- 28) + - (27) . 128
= (- 27) . (- 28 + 128)
= (- 27) . 100
= -2700
~Study well~
#KSJ