6875-x÷8=96
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98775 - 32 x 85
=98775 -2720
=96055
67500 - 24 x 236
= 67500 -5664
=61836
568 + 101598 : 287
= 568 +354
=922
6875 + 980 -180
=7855 -180
=7675
\(\dfrac{2}{5}+\dfrac{3}{10}-\dfrac{1}{2}\)
\(=\dfrac{7}{10}-\dfrac{1}{2}\)
= \(\dfrac{1}{5}\)
\(\dfrac{8}{11}+\dfrac{8}{33}x\dfrac{3}{4}\)
\(=\dfrac{8}{11}+\dfrac{2}{11}\)
\(=\dfrac{10}{11}\)
\(\dfrac{7}{9}x\dfrac{3}{14}:\dfrac{5}{8}\)
\(=\dfrac{1}{6}:\dfrac{5}{8}\)
\(=\dfrac{1}{6}x\dfrac{8}{5}\)
\(=\dfrac{8}{30}\)
\(=\dfrac{4}{15}\)
\(\dfrac{5}{12}-\dfrac{7}{32}:\dfrac{21}{16}\)
\(=\dfrac{5}{12}-\dfrac{7}{32}x\dfrac{16}{21}\)
\(=\dfrac{5}{12}-\dfrac{1}{6}\)
\(=\dfrac{5}{12}-\dfrac{2}{12}\)
\(=\dfrac{3}{12}=\dfrac{1}{4}\)
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2154*10+6875*10
=(2154+6875)*10
=9029*10
=90290
120/4*45+68
=30*45+68
=1350+68
=1418
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Bài làm
* Cách 1:
1827 : 87 + 6875 : 87
= ( 1827 + 6875 ) : 87
= 8702 : 87
= 100, 0229885057
* Cách 2:
1827 : 87 + 6875 : 87
= 21 + 79.0229885057
= 100, 0229885057
# Chúc bạn học tốt #
1827 : 87 + 6875 : 87
C1 ; ( 1827 + 6875 ) ; 87
= 8702 : 87
= 100 dư 2
C2 ; 1827 : 87 + 6875 : 87
= 21 + 79 dư 1
= 100 dư
bài em bị dư nha cứ chép vào mai em ra bảo thầy / cô chủ nhiệm lớp em ra sửa lại nếu ko thì dư 2 em nhé ! Hok tốt nha em !
=
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a. 96 : 8 : 2 = 6
96 : ( 8 x 2 ) = 6
96 : 8 : 2 = 96 : ( 8 x 2 )
b. 81 : 9 : 3 = 3
81 : ( 9 x 3 ) = 3
81 : 9 : 3 = 81 : ( 9x 3)
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a)
160 : (4 × 8) = 160 : 32 = 5
160 : 4 : 8 = 40 : 8 = 5
Vậy 160 : (4 × 8) = 160 : 4 : 8.
96 : (3 × 8) = 96 : 24 = 4
96 : 3 : 8 = 32 : 8 = 4
Vậy 96 : (3 × 8) = 96 : 3 : 8.
105 : (5 × 7) = 105 : 35 = 3
105 : 5 : 7 = 21 : 7 = 3
Vậy 105 : (5 × 7) = 105 : 5 : 7.
Nhận xét: a : (b × c) = a : b : c
b)
270 : (9 × 6) = 270 : 9 : 6 = 30 : 6 = 5
420 : (7 × 3) = 420 : 7 : 3 = 60 : 3 = 20
144 : (2 × 8) = 144 : 2 : 8 = 72 : 8 = 9
`6875-x:8=96`
`x:8=6875-96`
`x:8=6779`
\(x=6779 \times 8=54232\)
`6875-x : 8 = 96`
`x : 8 = 6875 - 96`
`x : 8 = 6779`
`x =6779 xx 8`
`x=54232`