B14 adding negative numbers

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  • Thread starter karush
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  • #1
karush
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Find
a. Subtracting 4 is the same as adding $\boxed{(-4)}$
b. Subtracting -7 is the same as adding $\boxed{(7)}$
c. Subtracting a positive number is the same as adding a
\boxed{negative} number, where that $\boxed{?}$ is opposite of the original number
d. Subtracting a negative number is the same as adding a
$\boxed{?}$ number, where that $\boxed{?}$ is opposite of the original number

ok they are trying to teach about using counters to add
but $\boxed{?}$ was kinda on of those boolean confusions
 

Answers and Replies

  • #2
HallsofIvy
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I'm not sure what "opposite of the original number" is supposed to mean! You said before that "subtracting -7 is the same as adding 7" so you do know that "
d. Subtracting a negative number is the same as adding a POSITIVE number, where that POSITIVE number is the opposite of the original number. (If the "original number" is -7 then the "positive number" is 7.
 

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