\(\text{43.17+29.57+13.43+57}\)
\(=43.\left(17+13\right)+57.\left(29+1\right)\)
\(=43.30+57.30\)
\(=30.\left(43+57\right)\)
\(=30.100\)
\(=3000\)
Học tốt
43.17+29.57+13.43+57
= 43.17 + 13.43 + 29.57 + 57
= 43 ( 17 + 13 ) + 57 ( 29 + 1 )
= 43 . 30 + 57 . 30
= 30 ( 43 + 57 )
= 30 . 100
= 3000
43 . 17 + 29 . 57 + 13 . 43 + 57
= 43 ( 13 + 17 ) + 57 ( 1 + 29 )
= 43 . 30 + 57 . 30
= ( 43 + 57 ) . 30
= 100 . 30
= 3000
Hok tốt
# owe
Đề : 43 . 17 + 29 . 57 + 13 . 43 +57
= 43 . ( 17 + 13 ) + 57 . ( 29 + 1 )
= 43 . 30 + 57 . 30
= 30 . ( 43 + 57 )
= 30 . 100
= 3000
học tốt nhé ^^
TÍNH NHANH
43.17+29.57+13.43+57
=43.(17+13)+(29+1).57
=43.30+30.57
30.(43+57)=30.100=3000
\(43.17+29.57+13.43+57\)
\(=43.17+13.43+29.57+57\)
\(=43.\left(17+13\right)+57.\left(29+1\right)\)
\(=43.30+57.30\)
\(=30.\left(43+57\right)\)
\(=30.100\)
\(=3000\)
Trả lời:
\(43.17+29.57+13.43+57\)
\(=43.\left(17+13\right)+57.\left(29+1\right)\)
\(=43.30+57.30\)
\(=30.\left(43+57\right)\)
\(=30.100\)
\(=3000\)
Hok tốt!
Vuong Dong Yet
