Tài liệu ôn tập TIMO Lớp 4 - Topic: Make an assumtuon

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Tài liệu ôn tập TIMO Lớp 4 - Topic: Make an assumtuon
 Topic: Make an assumtuon 
Practice 1: There are a total of 14 chickens and rabbits in a farm. The animals have 
a total of 32 legs. How many rabbit(s) is / are there? 
Practice 2: There are a total of 20 chickens and rabbits in a farm. The animals have 
a total of 66 legs. How many chicken(s) is / are there? 
Practice 3: There are a total of 24 chickens and rabbits in a farm. The animals have 
a total of 64 legs. How many chicken(s) is / are there? 
Practice 4: There are a total of 28 chickens and rabbits in a farm. The animals have 
a total of 72 legs. How many chicken are there? 
Practice 5: There are a total of 30 chickens and rabbits in a farm. The animals have 
a total of 74 legs. How many rabbit(s) is / are there? 
Practice 6: There are a total of 34 chickensand rabbitsin a farm.The animals have a 
total of 96 legs. How many chicken(s) is / are there? 
Practice 7: There are a total of 36 chickens and rabbits in a farm. The animals have 
a total of 80 legs. How many chicken(s) is / are there? 
Practice 8: There are a total of 36 chickens and rabbits in a farm. The animals have 
a total of 96 legs. How many rabbit(s) is / are there? 
Practice 9: There are a total of 48 chickens and rabbits in a farm. The animals have 
a total of 112 legs. How many chicken(s) is / are there? 
Practice 10: There are a total of 48 chickens and rabbits in a farm. The animals have 
a total of 104 legs. How many rabbit(s) is / are there? Practice 19: There are some chickens and rabbits. The number of chickens is 14 
more than the number of rabbits. If there are 172 legs in total, how many rabbit(s) 
is/are there? 
Practice 20: There are some chickens and rabbits, where the number of chickens is 
28 more than the number of rabbits. If there are 320 legs in total, how many rabbits 
are there? 
Practice 21: There are some chickens and rabbits, where the number of chickens is 
28 more than the number of rabbits. If there are 338 legs in total, how many 
chickens are there? 
Practice 22: There are some chickens and rabbits, where the number of legs of 
chickens is 26 more than the number of legs of rabbits. If there are 362 legs in total, 
how many rabbits are there? 
Practice 23: There are a total of 56 chickens, ducks and rabbits in a farm. These 
animals have a total of 146 legs. If the number of rabbits has 10 more than ducks, 
find the difference between the number of chickens and rabbits. 
Practice 24: Jane has $5 notes and $2 notes. She has 10 notes altogether which are 
worth $32. How many $5 notes does Jane have ? 
Practice 25: Andy has 15 $1, $2 and $5 coins altogether. He has $64 in total. How 
many $1 coin(s) does he have? 
Practice 26: Andy has 13 $1 and $2 coins altogether. He has $20 in total. How many 
$1 coin(s) does he have? 

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