387+25,36 87,5-28,67 5,67x 3,05 284,67:24
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(25,36 : 0,5 + 25,36 : 0,25 + 25,36 : 0,125)
= 25,36 : (0,5 + 0,25 + 0,125)
= 25,36 : 0,875
= 28,9828...
28,67 x 99 + 28,67
= 28,67 x 99 + 28,67 x 1
= 28,67 x ( 99 + 1 )
= 28,67 x 100
= 2867
28,67 x 99 + 28,67 = 2867
tk mk mk tk lại
tk nha
\(25,36:0,5+25,36:0,25+25,36:0,125\)
\(\Rightarrow\)\(25,36:\left(0,5+0,25\right)+25,36:0,125\)
\(\Rightarrow25,36:0,75+25,36:0,125\)
\(\Rightarrow25,36:\left(0,75+0,125\right)\)
\(\Rightarrow25,36:0,875\)
...........
a, 27,42 + 51,24 + 22,58 + 48,76
= ( 27,42 + 22,58 ) + ( 51,24 + 48,76 )
= 50 + 100
= 150
b, 28,67 x 99 + 28,67
= 28,67 x ( 99 + 1 )
= 28,67 x 100
= 2867
a) \(\text{27,42 + 51,24 + 22,58 + 48,76}\)
\(=\left(27,42+22,58\right)+\left(51,24+48,76\right)\)
\(=50+100\)
\(=150\)
b) \(\text{28,67 x 99 + 28,67}\)
\(=28,67\cdot99+28,67\cdot1\)
\(=28,67\cdot\left(99+1\right)\)
\(=28,67\cdot100\)
\(=2867\)
a,27,42+51,24+22,58-48,76
=(27,42+22,58)+(51,24-48,76)
=50+2,48
=52,48
b,28,67x99+28,67
=28,67x99+28,67x1
=28,67x(99+1)
=28,67x100
=2867
a) 27,42 + 51,24 + 22,58 - 28,76
= 51,24 + 28,76 - 27,42 + 22,58
= 80 - 50
= 30
b) 28,67 x 99 + 28,67
= 28,67 x 99 + 28,67 x 1
= 28,67 x ( 99 + 1 )
= 28,67 x 100
= 2867
^ - ^
a,27,42+51,24+22,58-48,76
=(27,42+22,58)+(51,24-48,76)
=50+2,48
=52,48
b,28,67x99+28,67
=28,67x99+28,67x1
=28,67x(99+1)
=28,67x100
=2867
21 x 25,36 + 25,36 x 80 - 25,36
= 21 x 25,36 + 25,36 x 80 - 25,36 x 1
= 25,36 x ( 21 + 80 - 1 )
= 25,36 x 100
= 2536
/HT\
21 x 25,36 + 25,36 x 80 - 25,36
=21 x 25,36 + 25,36 x 80 - 25,36 x 1
=25,36 x (21 + 80 -1)
= 25,36 x 100
2536
\(25,36\div0,5+25,36\div0,25+25,36\div0,125\)
\(=25,36\div\frac{5}{10}+25,36\div\frac{25}{100}+25,36\div\frac{125}{1000}\)
\(=25,36\div\frac{1}{2}+25,36\div\frac{1}{4}+25,36\div\frac{1}{8}\)
\(=25,36\cdot2+25,36\cdot4+25,36\cdot8\)
\(=25,36\cdot(2+4+8)\)
\(=25,36\cdot14=355,04\)
387 + 25,36 412,36 87,5 _ 28,67 0 58,83 5,67 x 3,05 2835 1701 17,2935 284,67 24 11,86125 44 20 6 1 47 30 60 120 0 #NqHahh
387+25,36=412,36
87,5-28,67=58,83
5,67 x 3,05 = 17,2935
284,67 : 24 = 11,86125