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a) 4+2/5=22/5
b) 5/4+2=13/4
c) 3+3/2=9/2
d) 3/4-1/8=5/8
e) 17/15-7/10=13/30
g) 25/12-15/8=5/24
h) 5-4/3=11/3
i)15/4-3=3/4
a)\(\dfrac{4}{1}+\dfrac{2}{5}=\dfrac{20}{5}+\dfrac{2}{5}=\dfrac{22}{5}\)
b)\(\dfrac{5}{4}+\dfrac{2}{1}=\dfrac{5}{4}+\dfrac{8}{4}=\dfrac{13}{4}\)
c)\(\dfrac{3}{1}+\dfrac{3}{2}=\dfrac{6}{2}+\dfrac{3}{2}=\dfrac{9}{2}\)
d)\(\dfrac{3}{4}-\dfrac{1}{8}=\dfrac{6}{8}-\dfrac{1}{8}=\dfrac{5}{8}\)
e)\(\dfrac{17}{15}-\dfrac{7}{10}=\dfrac{34}{30}-\dfrac{21}{30}=\dfrac{13}{30}\)
g)\(\dfrac{25}{12}-\dfrac{15}{8}=\dfrac{50}{24}-\dfrac{45}{24}=\dfrac{5}{24}\)
h)\(\dfrac{5}{1}-\dfrac{4}{3}=\dfrac{15}{3}-\dfrac{4}{3}=\dfrac{11}{3}\)
i)\(\dfrac{15}{4}-\dfrac{3}{1}=\dfrac{15}{4}-\dfrac{12}{4}=\dfrac{3}{4}\)
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On Monday | …………At….. 6:15 |
……In……….. the morning. | …………In….. the afternoon |
………At…….. 8:30 | ………On…….. Thursday |
……In……….. the evening | ………AT…….. night |
…………On….. Friday | …………At….. 9:45 |
………In…. the summer | ……ON….. Monday morning |
……At……. the weekend | …………In…. the winter |
\(\text{≌₰⇴⩸⨙⩸※◡⨦}\)
tại sao lại là At the weekend mà k phải In the weekend vậy bn
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1. Tiger
2. Giraffe
3. Monkey
4. Snake
5. Crocodile
6. Elephant
7. Bird
8. Zebra
9. Bear
10. Camel
11. Beetles
12. Fish
13. Chameleon
14. Squirrel
15. Parrot
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4/5
9/15+2/15+1/15=12/15=4/5.