Difference between revisions of "2021 Mock AMC 8 Problems/Problem 1"

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==Problem 1==
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What is the value of <math>1-2+3-4+5-6+7-8+9</math>?
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<math>\mathrm{(A)}\ 4 \qquad\mathrm{(B)}\ 5 \qquad\mathrm{(C)}\ 6  \qquad\mathrm{(D)}\ 7 \qquad\mathrm{(E)}\ 25</math>
 
==Solutions==
 
==Solutions==
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==Solution 1==
 
==Solution 1==

Revision as of 14:58, 16 October 2021

Problem 1

What is the value of $1-2+3-4+5-6+7-8+9$?

$\mathrm{(A)}\ 4 \qquad\mathrm{(B)}\ 5 \qquad\mathrm{(C)}\ 6  \qquad\mathrm{(D)}\ 7 \qquad\mathrm{(E)}\ 25$

Solutions

Solution 1