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.

$− 4 2 − 4 2$

499.

$16 −3 ( 5 −7 ) 16 −3 ( 5 −7 )$

500.

$| 21 − 6 | − | −8 | | 21 − 6 | − | −8 |$

In the following exercises, evaluate.

501.

$35 − a when a = −4 35 − a when a = −4$

502.

$( −2 r ) 2 when r = 3 ( −2 r ) 2 when r = 3$

503.

$3 m − 2 n when m = 6 , n = −8 3 m − 2 n when m = 6 , n = −8$

504.

$− | − y | when y = 17 − | − y | when y = 17$

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.

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

510.

$p − 11 = −4 p − 11 = −4$

511.

$−9 r = −54 −9 r = −54$

In the following exercises, translate and solve.

512.

$The product of 15 and x is 75. The product of 15 and x is 75.$

513.

$Eight less than y is −32. Eight less than y is −32.$