Interesting math problems and answers in grade three (solving problems)

Chickens and rabbits live in the same cage. 17 heads and 42 legs. How many rabbits are there?

If it's all chickens

2 (number of legs of a chicken) * 17( 17 head) =34 (number of legs of a chicken and a rabbit) -34 (number of legs of a hypothetical chicken) =8 (number of legs of a rabbit) -2 (number of legs of a chicken) =,

2* 17=34 (only) 42-34=8 (strips) 4-2=2 (strips) 8/2=4 (only) 17-4= 13 (only)

Answer: * * * 4 rabbits and 0/3 chickens.

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