\(\left(\frac{13}{84}.\frac{7}{5}-\frac{5}{2}.\frac{7}{180}\right):\frac{43}{18}+\frac{9}{2}.\frac{1}{10}\)
\(=\frac{43}{360}:\frac{43}{18}+\frac{9}{20}=\frac{1}{20}+\frac{9}{20}=\frac{10}{20}=\frac{1}{2}\)
\(\frac{\left(\frac{13}{84}.\frac{7}{5}-\frac{5}{2}.\frac{7}{180}\right):\frac{43}{18}+\frac{9}{2}.\frac{1}{10}}{\frac{141}{2}-528:\frac{15}{2}}\)
4) 87+(-45)-(-79)
5) (-15)+45-62
6) 120: (-5)+72
7) -147-130: (-13)
8) 125. (-8) : (-25). (-7)
9) 25-18+(-43)
10) -18-3.(-20)
4) 87+(-45)-(-79)
5) (-15)+45-62
6) 120: (-5)+72
7) -147-130: (-13)
8) 125. (-8) : (-25). (-7)
9) 25-18+(-43)
10) -18-3.(-20)
Mấy bạn ghi cách viết ra giúp mình . Cảm ơn
Bài 6 : Tính hợp lí
1 . (-232)+55+(-63)+45
2 . (-205)+21+205+75
3 . 131+269+(-59)+(-131)
4 . (-196)+189+20+(-604)+(-199)
5 . (-170)+43+(-143)
6 . (-43)+(-17)+(-25)
7 . (-249)+121+I-29I+(-121)
8 . (-47)+(-139)+47+169
9 . (-13)+(-7)+(-75)
10 . (-9)+37+(-11)
11 . 12+(-23)+53
12 . (-3)+(-25)+23
13 . (-26)+10+(-14)
14 . (-13)+6+(-37)+14
15 . (-11)+(-9)+5+25
16 . (-12)+(-18)+8
17 . 315+[135+(-315)+(-35)]
18 . 815+[95+(-915)+(-45)]
19 . 5+(-7)+9+(-11)+13+(-15)
20 . (-10)+12+(-14)+16+(-18)+20
a, A = 2^10 . 13 + 2^10 . 65 / 2^8 .140
b, B = 4^9 . 36 + 64 / 164 . 100
c, C = 72^3 . 54^2 / 108^4
d, D = 4^6 . 3^4 . 9^5 / 6^12
e, E = 2^13 + 2^5 / ,2^10 + 2^2
f. F = 21^ 2 . 14 . 125 / 35^5 . 6
g . G = 45^3 . 20^4 . 18^2 / 180^5
1) 80 - ( 4.52 - 3.23 )
2) 23.75 + 23.25 + 180
3) ( 71997 - 71995) : (7.71994)
4) -37 +54 + (-70) + (-163) +246
5) 217 + [ 43 + (-127) + (-23)]
6) 2448 : [119 - (23 - 6)]
7) 397 . 143 + 397 .856 +397
8) (28 + 27 + 26 + 25) : (32 . 15)
9) (-359) + 181 +(-123) +350 + (-172)
10) (-1) + (-2) + (-3) + (-4) + (-5) + (-6) + (-7) + (-8) + (-9) + (-10) + (-11) + (-12) + (-13) + (-14) + (-15) + (-16) + (-17) + (-18) + (-19)
Tính 1) 4/5 +13/18 2) 3/7 -11/8 3) -7/10 - -4/5 4) 3/20 -1/25 5) 2/3 - 5/6 6) 1/4 + -3/8 - 19/10 7) -9/10 - -7/18 8) 3/10 - 11/18 9) 3/5 -5/6 + -7/12 10) -4/9 - (-5 )/6 - 3/8
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
7+12+17+22+27+8+10+12+14+16+18+20
giúp mình với
a,(100.5^7+5^11:25):(5.5^13:25^2)
b,(3^12+3^11):3^10
c,(2^43+2^4):(2^20+1)
d,(2^22+2^24+2^25):(2^18+2^19+2^20)
e,7.3^9+3^10+51.3^8
