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Prealgebra

Practice Test

PrealgebraPractice Test

Practice Test

406.

For the numbers 0.18349…,0.2–,1.67,0.18349…,0.2–,1.67, list the ⓐ rational numbers and ⓑ irrational numbers.

407.

Is 144144 rational or irrational?

408.

From the numbers −4,−112,0,58,2,7,−4,−112,0,58,2,7, which are ⓐ integers ⓑ rational ⓒ irrational ⓓ real numbers?

409.

Rewrite using the commutative property: x·14=_________x·14=_________

410.

Rewrite the expression using the associative property: (y+6)+3=_______________(y+6)+3=_______________

411.

Rewrite the expression using the associative property: (8·2)·5=___________(8·2)·5=___________

412.

Evaluate 316(163n)316(163n) when n=42.n=42.

413.

For the number 2525 find the ⓐ additive inverse ⓑ multiplicative inverse.

In the following exercises, simplify the given expression.

414.

3 4 ( −29 ) ( 4 3 ) 3 4 ( −29 ) ( 4 3 )

415.

−3 + 15 y + 3 −3 + 15 y + 3

416.

( 1.27 q + 0.25 q ) + 0.75 q ( 1.27 q + 0.25 q ) + 0.75 q

417.

( 8 15 + 2 9 ) + 7 9 ( 8 15 + 2 9 ) + 7 9

418.

−18 ( 3 2 n ) −18 ( 3 2 n )

419.

14 y + ( −6 z ) + 16 y + 2 z 14 y + ( −6 z ) + 16 y + 2 z

420.

9 ( q + 9 ) 9 ( q + 9 )

421.

6 ( 5 x − 4 ) 6 ( 5 x − 4 )

422.

−10 ( 0.4 n + 0.7 ) −10 ( 0.4 n + 0.7 )

423.

1 4 ( 8 a + 12 ) 1 4 ( 8 a + 12 )

424.

m ( n + 2 ) m ( n + 2 )

425.

8 ( 6 p − 1 ) + 2 ( 9 p + 3 ) 8 ( 6 p − 1 ) + 2 ( 9 p + 3 )

426.

( 12 a + 4 ) − ( 9 a + 6 ) ( 12 a + 4 ) − ( 9 a + 6 )

427.

0 8 0 8

428.

4.5 0 4.5 0

429.

0 ÷ ( 2 3 ) 0 ÷ ( 2 3 )

In the following exercises, solve using the appropriate unit conversions.

430.

Azize walked 412412 miles. Convert this distance to feet. (1 mile=5,280 feet).(1 mile=5,280 feet).

431.

One cup of milk contains 276276 milligrams of calcium. Convert this to grams. (1 milligram=0.001 gram)(1 milligram=0.001 gram)

432.

Larry had 55 phone customer phone calls yesterday. The calls lasted 28,44,9,75,and5528,44,9,75,and55 minutes. How much time, in hours and minutes, did Larry spend on the phone? (1 hour=60 minutes)(1 hour=60 minutes)

433.

Janice ran 1515 kilometers. Convert this distance to miles. Round to the nearest hundredth of a mile. (1 mile=1.61 kilometers)(1 mile=1.61 kilometers)

434.

Yolie is 6363 inches tall. Convert her height to centimeters. Round to the nearest centimeter. (1 inch=2.54 centimeters)(1 inch=2.54 centimeters)

435.

Use the formula F=95C+32F=95C+32 to convert 35°C35°C to degrees FF

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