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co so so hang la
(100000-100)/1+1=99901(so)
Tong day so la
(100000+100)/2*99901=5000045050
dap so:5000045050
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100+200+300+400+500+600+700+800+900+1000
=(100+900)+(200+800)+(300+700)+(400+600)+(500+1000)
=1000+1000+1000+1000+1500
=2000+2000+1500
=4000+1500
=5500
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\(\dfrac{24}{600}=\dfrac{1}{25}\)
\(\dfrac{95}{500}=\dfrac{19}{100}\\ \dfrac{12}{400}=\dfrac{3}{100}\\ \dfrac{84}{200}=\dfrac{21}{50}\)
24/600 = 4/100
95/500 = 19/100
12/400 = 3/100
750/600 = 125/100
84/200 = 42/100
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30 + 70 + 500 + 400 + 100 + 900
= (30 + 70 + 500 + 400) + (100 + 900)
= 1000 + 1000
= 1000 x 2
= 2000
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x + 500 = 400 + 600
x + 500 = 1000
x = 1000 - 500
x = 500
x + 500 = 400 + 600
x + 500 = 1000
x = 1000 - 500
x = 500 k mk nha~~mk k bn rồi đó!!!!!!!
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100 + 200 + 330 + 400 + 500 + 600 + 500 + 11 + 112 + 216 + 325 + 213 + 2
= ( 100 + 200 ) + ( 400 + 600 ) + ( 500 + 500 ) + ( 330 + 11 + 112 + 216 ) + ( 325 + 213 + 2 )
= 300 + 1000 + 1000 + 669 + 540
= 1300 + 1000 + 669 + 540
= 2300 + 669 + 540
= 2840 + 540
= 3380
=900+500-400+150
=1400-400+150
=1000+150
=1150
(ko dùng máy tính đâu nhớ )
900 + 500 - 400 + 600 : 4 = 1150