Prealgebra

# Practice Test

PrealgebraPractice Test

### Practice Test

484.

Locate and label $0,2,−4,0,2,−4,$ and $−1−1$ on a number line.

In the following exercises, compare the numbers, using $or=.or=.$

485.
1. $−6__3−6__3$
2. $−1__−4−1__−4$
486.
1. $−5__|−5|−5__|−5|$
2. $−|−2|__−2−|−2|__−2$

In the following exercises, find the opposite of each number.

487.
1. $−7−7$
2. $88$

In the following exercises, simplify.

488.

$−(−22)−(−22)$

489.

$|4−9||4−9|$

490.

$−8+6−8+6$

491.

$−15+(−12)−15+(−12)$

492.

$−7−(−3)−7−(−3)$

493.

$10−(5−6)10−(5−6)$

494.

$−3⋅8−3⋅8$

495.

$−6(−9)−6(−9)$

496.

$70÷(−7)70÷(−7)$

497.

$(−2)3(−2)3$

498.

$−42−42$

499.

$16−3(5−7)16−3(5−7)$

500.

$|21−6|−|−8||21−6|−|−8|$

In the following exercises, evaluate.

501.

$35−awhena=−435−awhena=−4$

502.

$(−2r)2whenr=3(−2r)2whenr=3$

503.

$3m−2nwhenm=6,n=−83m−2nwhenm=6,n=−8$

504.

$−|−y|wheny=17−|−y|wheny=17$

In the following exercises, translate each phrase into an algebraic expression and then simplify, if possible.

505.

the difference of −7 and −4

506.

the quotient of $2525$ and the sum of $mm$ and $n.n.$

In the following exercises, solve.

507.

Early one morning, the temperature in Syracuse was $−8°F.−8°F.$ By noon, it had risen $12°.12°.$ What was the temperature at noon?

508.

Collette owed $128128$ on her credit card. Then she charged $65.65.$ What was her new balance?

In the following exercises, solve.

509.

$n+6=5n+6=5$

510.

$p−11=−4p−11=−4$

511.

$−9r=−54−9r=−54$

In the following exercises, translate and solve.

512.

$The product of 15 andxis 75.The product of 15 andxis 75.$

513.

$Eight less thanyis −32.Eight less thanyis −32.$