$4:\dfrac{3}{4}+\dfrac{1}{5}\otimes\dfrac{3}{7}$

ML

Minh Lệ

23 tháng 8 2023

>; <; = ?Nhận xét:- $\dfrac{3}{7}< \dfrac{7}{7}$ nên $\dfrac{3}{7}< 1$- $\dfrac{8}{5}>\dfrac{5}{5}$ nên $\dfrac{8}{5}>1$- $4:4=1$ nên $\dfrac{4}{4}=1$. a) $\dfrac{12}{15}$ 1 b) $\dfrac{9}{7}$ 1 c) $\dfrac{3}{3}$ 1 ...

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#Toán lớp 4

2

GL

Gia Linh

23 tháng 8 2023

a) $\dfrac{12}{15}< 1$

b) $\dfrac{9}{7}>1$

c) $\dfrac{3}{3}=1$

d) $\dfrac{99}{100}>1$

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NG

Người Già

CTVVIP

23 tháng 8 2023

a) $\dfrac{12}{15}$ < 1

b) $\dfrac{9}{7}$ > 1

c) $\dfrac{3}{3}$ = 1

d) $\dfrac{99}{100}$ < 1

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NT

Nguyet Tran

21 tháng 4 2022

...

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#Toán lớp 4

2

NT

Nguyet Tran

21 tháng 4 2022

ét ô ét

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NM

Nguyễn Minh Dương

12 tháng 11 2022

a.25/27 b.0 c.0

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NT

Nguyet Tran

15 tháng 5 2022

A,$\dfrac{8}{9}:\dfrac{4}{5}+\dfrac{3}{5}$

B,$\dfrac{5}{8}$ + $\dfrac{1}{4}$

C,$\dfrac{7}{8}$ x $\dfrac{4}{7}$ +$\dfrac{5}{9}$

D,$\dfrac{9}{8}:\dfrac{4}{3}-\dfrac{4}{7}$

#Toán lớp 4

3

C

Chuu

15 tháng 5 2022

8/9 x 5/4 + 3/5 = 10/9 + 3/5 = 77/45

5/8 + 1/4 = 5/9 + 2/8 = 7/8

1/2 + 5/9 = 9/18 + 5/9 = 14/9

9/8 x 3/4 - 4/7 = 27/32 - 4/7 = 61/224

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O

★彡✿ทợท彡★

15 tháng 5 2022

a) $\dfrac{8}{9}:\dfrac{4}{5}+\dfrac{3}{5}=\dfrac{8}{9}\times\dfrac{5}{4}+\dfrac{2}{5}=\dfrac{10}{9}+\dfrac{2}{5}=\dfrac{50}{45}+\dfrac{18}{45}=\dfrac{68}{45}$

b) $\dfrac{5}{8}+\dfrac{1}{4}=\dfrac{5}{8}+\dfrac{2}{8}=\dfrac{6}{8}=\dfrac{3}{4}$

c) $\dfrac{7}{8}\times\dfrac{4}{7}+\dfrac{5}{9}=\dfrac{1}{2}+\dfrac{5}{9}=\dfrac{9}{18}+\dfrac{10}{18}=\dfrac{19}{18}$

d) $\dfrac{9}{8}:\dfrac{4}{3}-\dfrac{4}{7}=\dfrac{9}{8}\times\dfrac{3}{4}-\dfrac{4}{7}=\dfrac{27}{32}-\dfrac{4}{7}=\dfrac{61}{244}$

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NT

Nguyet Tran

9 tháng 5 2022

a.$\dfrac{2}{7}$ x $\dfrac{4}{3}$ + $\dfrac{2}{6}$

B.$\dfrac{4}{7}$ : 2 + $\dfrac{4}{7}$

C.$\dfrac{1}{3}+\dfrac{3}{4}-\dfrac{1}{5}:\dfrac{2}{3}$

#Toán lớp 4

3

NN

Nguyễn Ngọc Khánh Huyền

9 tháng 5 2022

a) ^{_{$\dfrac{2}{7}\times\dfrac{4}{3}+\dfrac{2}{6}$}}

^{_{$=\dfrac{8}{21}+\dfrac{2}{6}$}}

^{_{$=\dfrac{5}{7}$}}

b) ^{_{$\dfrac{4}{7}:2+\dfrac{4}{7}$}}

^{_{$=\dfrac{2}{7}+\dfrac{4}{7}$}}

^{_{$=\dfrac{6}{7}$}}

c) ^{_{$\dfrac{1}{3}+\dfrac{3}{4}-\dfrac{1}{5}:\dfrac{2}{3}$}}

^{_{$=\dfrac{13}{12}-\dfrac{3}{10}$}}

^{_{$=\dfrac{47}{60}$}}

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ID

I don't Know

9 tháng 5 2022

a $\dfrac{8}{21}+\dfrac{2}{6}=\dfrac{16}{42}+\dfrac{14}{42}=\dfrac{30}{42}=\dfrac{5}{7}$

$b$ $\dfrac{4}{7}\times\dfrac{1}{2}+\dfrac{4}{7}=\dfrac{2}{7}+\dfrac{4}{7}=\dfrac{6}{7}$

$c$ $\dfrac{1}{3}+\dfrac{3}{4}-\dfrac{1}{5}\times\dfrac{3}{2}=\dfrac{1}{3}+\dfrac{3}{4}-\dfrac{3}{10}=\dfrac{20}{60}+\dfrac{45}{60}-\dfrac{18}{60}=\dfrac{47}{60}$

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HK

Hoàng Kim Nhung

12 tháng 7 2023

Tínha.$\dfrac{4}{9}+\dfrac{3}{7}$ $\dfrac{3}{4}+\dfrac{7}{24}$ $\dfrac{1}{3}+\dfrac{2}{9}+\dfrac{4}{27}$b.$\dfrac{5}{6}-\dfrac{3}{8}$ $\dfrac{7}{15}-\dfrac{11}{30}$ $\dfrac{2}{3}+\dfrac{1}{6}-\dfrac{7}{12}$c.$\dfrac{18}{25}\times\dfrac{15}{6}$ $\dfrac{30}{49}:\dfrac{6}{7}$ $\dfrac{1}{2}\times\dfrac{3}{4}:\dfrac{6}{5}$d.$8\times\dfrac{3}{5}:\dfrac{12}{5}$ $4:\dfrac{9}{5}:\dfrac{10}{3}$3 bn đầu tiên xong mik sẽ...

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#Toán lớp 4

1

NL

Nguyễn Lê Phước Thịnh

12 tháng 7 2023

a: 4/9+3/7=28/63+27/63=55/63

3/4+7/24=18/24+7/24=25/24

1/3+2/9+4/27=9/27+6/27+4/27=19/27

b: 5/6-3/8=20/24-9/24=11/24

7/15-11/30=14/30-11/30=3/30=1/10

2/3+1/6-7/12

=8/12+2/12-7/12

=3/12=1/4

c: 18/25*15/6=15/25*18/6=3*3/5=9/5

30/49:6/7=30/49*7/6=210/294=5/7

1/2*3/4:6/5=3/8*5/6=15/48=5/16

d: 8*3/5:12/5=24/5*5/12=2

4:9/5:10/3=4*5/9*3/10=2/3

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TN

Thư Nguyễn

2 tháng 5 2022

$\dfrac{3}{7}$ + 4 = ?$\dfrac{5}{9}$ x 3 = ?$\dfrac{7}{8}$ - $\dfrac{2}{9}$= ?5 - $\dfrac{3}{4}$= ?$\dfrac{5}{7}$ : 6 = ?$\dfrac{5}{6}$ x $\dfrac{2}{7}$= ?3 + $\dfrac{3}{4}$= ?$\dfrac{3}{5}x\dfrac{4}{8}$ = ?5 : $\dfrac{3}{8}$= ?Mong mn trả...

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#Toán lớp 4

2

O

★彡✿ทợท彡★

2 tháng 5 2022

a) $\dfrac{3}{7}+4=\dfrac{3}{7}+\dfrac{4}{1}=\dfrac{3}{7}+\dfrac{28}{7}=\dfrac{31}{7}$

b) $\dfrac{5}{9}\times3=\dfrac{5\times3}{9}=\dfrac{15}{9}=\dfrac{5}{3}$

c) $\dfrac{7}{8}-\dfrac{2}{9}=\dfrac{63}{72}-\dfrac{16}{72}=\dfrac{47}{72}$

d) $5-\dfrac{3}{4}=\dfrac{5}{1}-\dfrac{3}{4}=\dfrac{20}{4}-\dfrac{3}{4}=\dfrac{17}{4}$

e) $\dfrac{5}{7}:6=\dfrac{5}{7}:\dfrac{6}{1}=\dfrac{5}{7}\times\dfrac{1}{6}=\dfrac{5}{42}$

f) $\dfrac{5}{6}\times\dfrac{2}{7}=\dfrac{5\times2}{6\times7}=\dfrac{10}{42}=\dfrac{5}{21}$

g) $3+\dfrac{3}{4}=\dfrac{3}{1}+\dfrac{3}{4}=\dfrac{12}{4}+\dfrac{3}{4}=\dfrac{15}{4}$

h) $\dfrac{3}{5}\times\dfrac{4}{8}=\dfrac{3\times4}{5\times8}=\dfrac{12}{40}=\dfrac{3}{10}$

i) $5:\dfrac{3}{8}=\dfrac{5}{1}:\dfrac{3}{8}=\dfrac{5}{1}\times\dfrac{8}{3}=\dfrac{40}{3}$

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YA

You are my sunshine

2 tháng 5 2022

$\dfrac{3}{7}+\dfrac{4}{1}=\dfrac{3}{7}+\dfrac{28}{7}=\dfrac{31}{7}$

$\dfrac{5}{9}\times3=\dfrac{5}{9}\times\dfrac{3}{1}=\dfrac{15}{9}=\dfrac{5}{3}$

$\dfrac{7}{8}-\dfrac{2}{9}=\dfrac{63}{72}-\dfrac{16}{72}=\dfrac{47}{72}$

$\dfrac{5}{1}-\dfrac{3}{4}=\dfrac{20}{4}-\dfrac{3}{4}=\dfrac{17}{4}$

$\dfrac{5}{7}:\dfrac{6}{1}=\dfrac{5}{7}\times\dfrac{1}{6}=\dfrac{5}{42}$

$\dfrac{5}{6}\times\dfrac{2}{7}=\dfrac{5\times2}{6\times7}=\dfrac{10}{42}=\dfrac{5}{21}$

$\dfrac{3}{1}+\dfrac{3}{4}=\dfrac{12}{4}+\dfrac{3}{4}=\dfrac{15}{4}$

$\dfrac{3}{5}\times\dfrac{4}{8}=\dfrac{3}{5}\times\dfrac{1}{2}=\dfrac{3\times1}{5\times2}=\dfrac{3}{10}$

$\dfrac{5}{1}:\dfrac{3}{8}=\dfrac{5}{1}\times\dfrac{8}{3}=\dfrac{40}{3}$

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FS

FAN ST - Hiha

17 tháng 5 2022

$4+\dfrac{3}{5}$ $\dfrac{1}{5}+\dfrac{2}{7}$ $\dfrac{4}{7}$ x $\dfrac{14}{3}$ ...

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#Toán lớp 4

2

C

Chuu

17 tháng 5 2022

$4+\dfrac{3}{5}=\dfrac{20}{5}+\dfrac{3}{5}=\dfrac{23}{5}$

$\dfrac{1}{5}+\dfrac{2}{7}=\dfrac{7}{35}+\dfrac{10}{35}=\dfrac{17}{35}$

$\dfrac{4}{7}\times\dfrac{14}{3}=\dfrac{56}{21}=\dfrac{8}{3}$

$\dfrac{5}{6}:\dfrac{4}{9}=\dfrac{5}{6}\times\dfrac{9}{4}=\dfrac{15}{8}$

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O

★彡✿ทợท彡★

17 tháng 5 2022

$4+\dfrac{3}{5}=\dfrac{20}{5}+\dfrac{3}{5}=\dfrac{23}{5}$

$\dfrac{1}{5}+\dfrac{2}{7}=\dfrac{7}{35}+\dfrac{5}{35}=\dfrac{12}{35}$

$\dfrac{4}{7}\times\dfrac{14}{3}=\dfrac{56}{21}=\dfrac{8}{3}$

$\dfrac{5}{6}:\dfrac{4}{9}=\dfrac{5}{6}\times\dfrac{9}{4}=\dfrac{15}{8}$

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D

datcoder

CTVVIP

31 tháng 10 2023

Tính:

a) $\dfrac{5}{2}\times\dfrac{4}{3}+\dfrac{1}{3}$

b) $\dfrac{7}{3}-\dfrac{2}{3}:\dfrac{5}{7}$

c) $\dfrac{3}{4}\times\left(\dfrac{5}{2}-\dfrac{3}{2}\right)$

#Toán lớp 4

1

HQ

Hà Quang Minh

Giáo viên

27 tháng 11 2023

a) $\frac{5}{2} \times \frac{4}{3} + \frac{1}{3} = \frac{{10}}{3} + \frac{1}{3} = \frac{{11}}{3}$

b) $\frac{7}{3} - \frac{2}{3}:\frac{5}{7} = \frac{7}{3} - \frac{2}{3} \times \frac{7}{5} = \frac{7}{3} - \frac{{14}}{{15}} = \frac{{35}}{{15}} - \frac{{14}}{{15}} = \frac{{21}}{{15}} = \frac{7}{5}$

c) $\frac{3}{4} \times \left( {\frac{5}{2} - \frac{3}{2}} \right) = \frac{3}{4} \times 1 = \frac{3}{4}$

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FS

FAN ST - Hiha

10 tháng 5 2022

6. ÉT O ÉT $\dfrac{9}{7}$ và $\dfrac{5}{6}$ $\dfrac{4}{7}$ và $\dfrac{8}{21}$ $\dfrac{2}{5};\dfrac{1}{3}$ và $\dfrac{1}{2}$ $\dfrac{1}{3};\dfrac{4}{3}$...

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