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# Common Core Standard 4.MD.C.7 Questions

Recognize angle measure as additive. When an angle is decomposed into non-overlapping parts, the angle measure of the whole is the sum of the angle measures of the parts. Solve addition and subtraction problems to find unknown angles on a diagram in real world and mathematical problems, e.g., by using an equation with a symbol for the unknown angle measure.

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One angle has $10deg$ more than another angle.
The sum of the angles is $90deg$. How many degrees
are in each angle?
1. $80deg,10deg$
2. $40deg,50deg$
3. $45deg,45deg$
4. $30deg,30deg$
Which TWO statements about the angles shown are true?
1. $DBC > ABC$
2. $DBC = ABC$
3. $DBC < ABC$
4. $DBC + ABC = DBA$
5. $DBC - ABC = DBA$
Which THREE statements are true about the angles shown?
1. $ABC = 90deg$
2. $DBC = 90deg$
3. $DBA = 180deg$
4. $ABC = DBC$
5. $DBA = DBC + ABC$
6. $ABC = DBA - DBC$
One angle is twice another angle. The sums of the angle is
$90deg$. How many degrees are in each angle?
1. $45deg$;$90deg$
2. $15deg$;$30deg$
3. $30deg$;$60deg$
4. $20deg$;$25deg$
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