tinh thuan tien
1013x1014-1000
1012x1013+1026
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dinh hoang vu
\(\frac{1212}{1515}=\frac{1212\div101}{1515\div101}\)
\(=\frac{12}{15}=\frac{4}{5}\)
(2774+1026):38 + (25.4).7.5
= 3800 : 38 + 100.35
= 100 + 3500
= 3600
a,2774:38+1026:38+25.7.4.5
=(2774+1026):38+3500
=3800:38+3500
=100+3500
=3600
\(\dfrac{1}{3}+\dfrac{6}{5}-\dfrac{1}{5}+\dfrac{2}{3}=2\)
`43,5xx98,99+43,5:100+43,5`
`=43,5xx98,99+43,5xx0,01+43,5`
`=43,5xx(98,99+0,01+1)`
`=43,5xx100`
`=4350`
\(\dfrac{4}{25}+6\%+\dfrac{41}{100}+0,37=\dfrac{4}{25}+\dfrac{3}{50}+\dfrac{41}{100}+\dfrac{37}{100}=\dfrac{16}{100}+\dfrac{6}{100}+\dfrac{41}{100}+\dfrac{37}{100}=\left(\dfrac{16}{100}+\dfrac{37}{100}\right)+\left(\dfrac{6}{100}+\dfrac{41}{100}\right)=\dfrac{53}{100}+\dfrac{47}{100}=\dfrac{100}{100}=1\)
\(5,65\cdot13,8+35,7\cdot3,21+5,56\cdot21,9+35,7\cdot1,14\)
\(=5,65\left(13,8+21,9\right)+35,7\left(3,21+1,14\right)\)
\(=5,65\cdot35,7+35,7\cdot4,35\)
\(=35,7\left(5,65+4,35\right)\)
\(=35,7\cdot10=357\)
\(650:25-325:25-225:25\)
\(=\left(650-325-225\right):25\)
\(=100:25\)
\(=4\)
50056456+(56442424455x2)=50056456+112884848910
=112934905366