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135 x 37 + 135 + 62 x 135
= 135 x 37 + 135 x 1 + 62 x 135
= 135 x ( 37 + 1 + 62)
= 135 x 100
= 13500
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a,234.4+234.5+234=234(4+5+1)=234.10=2340
b,135.16-135.2-135.4=135(16-4-2)=135.10=1350
c,1/2+1/4+1/8+1/16+1/32+1/64=1-1/2+1/2-1/4+1/4-1/8+1/8-1/16+1/16-1/32=1-1/32=31/32
a) 234 x4 + 234 x 5 + 234 = 234 x ( 1+4+5)=2340
b)135 x16 -135 x2 -4 x135 =135 x (16-2-4) =1350
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135 x 27 135 x 72 + 135
= 135 x 27 135 x 72 + 135 x 1
= 135 x ( 27 + 72 + 1 )
= 135 x 100
= 13 500
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135 x 8 + 135 x 2 =?
Cách 1: 135 x 8 + 135 x 2
= 1080 + 270 = 1350
Cách 2: 135 x 8 + 135 x 2
= 135 x (8 + 2) = 1350
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135 x 124 - 135 x 23 - 135
= 135 x 124 - 135 x 23 - 135 x 1
= 135 x ( 124 - 23 - 1)
= 135 x ( 101 - 1)
= 135 x 100
= 13500
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=(( 135 * ( 25 + 15 ) : 10
= ( 135 * 30 ) : 10
= 5400 : 10
= 540
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C1:
a) 135 x 54 + 45 x 135 + 135
= 135 x ( 54 + 45 + 1)
=135x100=13500
C2
a) 135 x 54 + 45 x 135 + 135
= 7290 + 6075 +135
= 13500
135 x 37 - 135 + 135 x 64
=135 x 37 - 135 x 1 + 135 x 64
=135 x (37-1+64)
=135 x 100
=13500
\(135\times37-135+135\times64\)'
\(=135\times37-135\times1+135\times64\)
\(=135\times\left(37+64-1\right)\)
\(=135\times100\)
\(=13500\)
Chúc bn ngủ ngon~^HT^~