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\(57\cdot36+114\cdot32-1999-2001\)
\(=57\cdot36+57\cdot64-4000\)
\(=57\cdot\left(36+64\right)-4000\)
\(=5700-4000=1700\)
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a.(64 - 32 ) :8 = 32 : 8 = 4
b. 36 x 2 x7 + 36 x 86
= 36 x (14 + 86)
= 36 x 100
= 3600
68:8 - 32 : 8
= ( 68 - 32): 8
= 36 : 8
= 4,5
72 x 7 + 36 x 86
= 72 x 7 + 36 x 2 x 43
= 72 x 7 + 72 x 43
= 72 x ( 7 + 43)
= 72 x 50
= 3600
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`= 72 xx 19 + 36 xx 2 xx3 xx 10 + 72 xx 80 - 72 xx 29`
`= 72 xx(19 + 30 - 29 + 80)`
`= 72 xx 100`
`= 7200`
\(=72.19+36.2.3.10+72.2.40-72.29\)
\(=72.19+72.30+72.80-72.29\)
\(=72.\left(19+30+80-29\right)\)
\(=72.100=7200\)
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0 : 36 x ( 32 + 58 +69 - 95 + 152 ) = 0
Vì 0 chia cho bao nhiêu cũng = 0
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a: =214*(13+17)=214*30=6420
b: =635(58-48)=635*10=6350
c: =100*19=1900
d: =4*32=128
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\(a,C1=744+186\\ =930\\ C2=93\times\left(8+2\right)\\ =93\times10=930\\ b,C1:=324+576\\ =900\\ C2=9\times\left(36+64\right)\\ =9\times100\\ =900\\ c,C1=456-399\\ =57\\ C2=57\times\left(8-7\right)\\ =57\)
\(a)\)\(93\times8+93\times2\)
\(=98\times\left(8+2\right)\)
\(=98\times10\)
\(=980\)
\(b)36\times9+64\times9\)
\(=9\times\left(36+64\right)\)
\(=9\times100\)
\(=900\)
\(c)57\times8+57\times7\)
\(=57\times\left(8-7\right)\)
\(=57\times1\)
\(=57\)
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36 x 532 + 36 x 532 + 532
= ( 36 x 532 ) x 2 + 532
= 38304 + 532
= 38836
36 x 532 + 36 x 532 + 532
= 532 x (36 + 36 +1)
= 532 x 73
= 38836
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1998 + 2000 + 2 = ( 1998 + 2 ) + 2000
= 2000 + 2000
= 4000
1999 x 1999 + 1 = 3996002
= -1772 nha