Joseph has 18 chocolates. He gave 3 chocolates to his friends. Joseph calculated the remaining number of chocolates by the expression $3 - 18$ by assuming subtraction to be commutative. Is he correct?

yes

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cannot be determined

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Solution

The correct option is B no
Total number of chocolates Joseph has $= 18$
He gave 3 chocolates to his friends

Remaining number of chocolates $= 18 - 3 = 15$

Here, $3 - 18 = - 15 \neq 18 - 3$ .
Hence, Joseph is not correct because commutative property cannot be applied to subtraction of numbers.

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Joseph has 18 chocolates. He gave 3 chocolates to his friends. Joseph calculated the remaining number of chocolates by the expression 3−18 by assuming subtraction to be commutative. Is he correct?

The correct option is B noTotal number of chocolates Joseph has =18 He gave 3 chocolates to his friends Remaining number of chocolates =18−3=15 Here, 3−18=−15≠18−3. Hence, Joseph is not correct because commutative property cannot be applied to subtraction of numbers.

Joseph has 18 chocolates. He gave 3 chocolates to his friends. Joseph calculated the remaining number of chocolates by the expression $3 - 18$ by assuming subtraction to be commutative. Is he correct?

The correct option is B no
Total number of chocolates Joseph has $= 18$
He gave 3 chocolates to his friends

Remaining number of chocolates $= 18 - 3 = 15$

Here, $3 - 18 = - 15 \neq 18 - 3$ .
Hence, Joseph is not correct because commutative property cannot be applied to subtraction of numbers.