11070:15[356-(2110-2000)
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a) 11070 : {15 . [ 356 – ( 2110 – 2000 )]}
= 11070 : [15(356 – 110)] = 11070 : 3690 = 3
11070:15.[356-(2110-2000)]
=11070:15.[356-110]
=11070:15.246
=738.246
=181548
a) 11070 : {15 . [ 356 – ( 2110 – 2000 )]}
= 11070 : [15(356 – 110)] = 11070 : 3690 = 3
b) 62500 : { 50 2 : [ 112 – ( 52 – 2 3 . 5 )]}
= 62500 : { 2500 : [ 112 – ( 52 – 40 )]}
= 62500 : { 2500 : [ 112 – 12 ]}
= 62500 : { 2500 : 100 }
= 62500 : 25
= 2500
c) 3 3 . 5 3 – 20 . { 300 – [ 540 – 2 3 ( 7 8 : 7 6 + 7 0 )]}
= 3 3 . 5 3 – 20 . {300 – [ 540 – 2 3 (72 + 1 )]
= 3 3 . 5 3 – 20 . [ 300 – (540 - 8 . 50)
= 27 . 125 – 20 . [300 – ( 540 - 400 )]
= 3375 – 20 . ( 300 – 140 )
= 3375 – 20 . 160
= 3375 – 3200
= 175
\(a,11070:\left\{15.\left[356-\left(2110-2000\right)\right]\right\}\)
\(=11070:\left[15.\left(356-110\right)\right]\)
\(=11070:\left(15.246\right)\)
\(=11070:3690\)
\(=3\)
\(b,62500:\left\{50^2:\left[112-\left(52-2^3.5\right)\right]\right\}\)
\(=62500:\left\{50^2:\left[112-\left(52-40\right)\right]\right\}\)
\(=62500:\left[50^2:\left(112-12\right)\right]\)
\(=62500:\left(50^2:100\right)\)
\(=62500:25\)
\(=2500\)
400dm2 = 4cm2
2110m2 = 21,1dm2
15m2 = 150000cm2
10dm2 2cm2 = 1002cm2
400 dm2 = 40000 cm2 2110 m2 = 211000 dm2
15 m2 = 150000 cm2 10 dm2 2 cm2 = 1002 cm2
k mik nha!
Chúc bạn học tốt!
\(15m^2=150000cm^2\)
\(103m^2=10300dm^2\)
\(2110dm^2=211000cm^2\)
\(500cm^2=5dm^2\)
11070:15.[356-(2110-2000)
= 11070:15.[356- 110]
=11070:15. 346
=738.346
=255348
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