doi cac so thap phan 0,9; 0,123;0,03;0,77;0,021 ra phan so
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doi cac so sau thanh so viet trong he thap phan: 206 co so 7
Khi nhan 1 so thap phan co 2 chu so o phan thap phan voi 12,35 mot ban da dat cac tich rieng nhu doi voi phep cong va co ket qua la 220,66 . Hay tim ket qua dung cua phep nhan do . biet rang dau phay o cac thua so thang cot voi nhau
Doi cac so thap phan ra thanh phan so toi gian
A, 1,3(12)
B, 3,3(21)
C,5,2(24)
D,3,32(6)
a)1,3(12)=\(\dfrac{1}{10}.\left(13+12.\dfrac{1}{99}\right)\)=\(\dfrac{443}{330}\)
b)\(3,3\left(21\right)=\dfrac{1}{10}\left(33+21.\dfrac{1}{99}\right)=\dfrac{548}{165}\)
c)\(5,2\left(24\right)=\dfrac{1}{10}\left(52+24.\dfrac{1}{99}\right)=\dfrac{862}{165}\)
d)\(3,32\left(6\right)=\dfrac{1}{100}\left(332+6.\dfrac{1}{9}\right)=\dfrac{499}{150}\)
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A, 1,3(12) = \(\dfrac{433}{330}\)
B, 3,3(21) = \(\dfrac{548}{165}\)
C,5,2(24) = \(\dfrac{862}{165}\)
D,3,32(6) = \(\dfrac{499}{150}\)
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A, 1,3(12)=\(\dfrac{433}{330}\)
B, 3,3(21)= \(\dfrac{548}{165}\)
C, 5,2(24)= \(\dfrac{862}{165}\)
D, 3,32(6)= \(\dfrac{499}{150}\)
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Cac chu so phan muoi, phan tram, phan nghin cua mot so thap phan co 3 chu so o phan thap phan la 3 so le lien tiep . Tong cac chu so o phan thap phan bang phan nguyen cua so do, cac chu so o phan nguyen va phan thap phan deu khac nhau . Tim so thap phan do ?
cho mot so thap phan ,doi dau phay cua so thap phan do sang ben phai mot chu so ta duoc so thap phan thu hai cong hai so thap phan lai ta duoc294,58 .Hoi so thap phan ban dau la bao nhieu?
theo đề bài
(a.10) + a = 294,58
=> ( a + a ) .10 =( a.10) + a
=> a + a = 294,58 / 10 = 29,458
còn lại tự xử
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tinh tong cac so thap phan co cac chu so khac nhau ma co 3 chu so o phan thap phan lap duoc tu cac chu so 0;3;5;7
co the viet duoc bao nhieu so thap phan tu cac chu so 0,3,6,8 .cac so thap phan do co 2 chu so o phan thap phan ma co du mat 4 chu so da cho
chuyen cac so thap phan sau thanh phan so thap phan roi chuyen sang hon so
43,2
52,04
4,01
b)chuyen cac phan so thap phan sang hon so roi sang so thap phan
45/10
2167/1000
2167/100
Chỉ làm cho phân số phần a) thôi nhé !
\(43,2=\frac{432}{10}\) \(52,04=\frac{5204}{100}\) \(4,01=\frac{401}{100}\)
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a, 43,2=43/10 52,4=52/100 4,01= 4/100 . b . 45/10=4 5/10=4,5 2167/1000=2 167/1000=2,167 2167/100=21 67/100=21,67
Cac chu so phan muoi , phan tram cua mot so thap phan co hai chu so o phan thap phan la hai so tu nhien lien tiep co tong bang 11. Tich cac chu so o phan thap phan bang phan nguyen cua so do.tim so thap phan do !
Giai chi tiet ho minh nhe!