Discrete Test 1 Review

Rounding

100

Round 1,526,391 to the nearest tens place.

1,526,390

200

Round 1,526,391 to the nearest ten thousands place.

1,530,000

300

Round 1,526,391 to the nearest millions place.

2,000,000

400

Round 0.26153 to the nearest tenth.

0.30000

500

Round 0.26153 to the nearest hundredth.

0.26000

Estimating

100

You make $10.10 per hour and work 20 hours per week.  Estimate your weekly salary. 

$200

200

You make $24.90 per hour, work 40 hours per week and 50 weeks per year. Estimate your annual salary. 

$50,000

300

Estimate the cost of 50 shirts that cost $8.95 each. 

$450

400

Estimate the cost to buy a refrigerator for $1190, a microwave for $489, and a stove for $1899 (round to hundreds).

$3600

500

Your apartment rent is $805 per month.  Estimate your 4-month bill. 

$3200

Counterexample

100

If you work at Assumption HS, you are a female.

Any male employee

200

If it is Thursday, we have C Block. 

Last Thursday we didn't.

300

If you multiply a number by itself, you get an even number. 

Ex: 3*3, 5*5, etc

400

If a number is odd, then it is prime.

Ex: 9, 15, etc

500

The sum of three two-digit numbers is a three-digit number. 

Ex: 11+11+11, or 22+22+22, etc.

Pattern

100

Find the next number:

2,5,8,11...

14

200

Find the next number:

3,9,27,81,

243

300

Find the next two numbers:

2, 5, 2, 10, 2, 15, 2, 

20, 2

400

Find the next number:

1/2, -1/2, -1/6, -1/10, -1/14,..

-1/18

500

Find the next number:

2,5,10,17,26,37

50