Unit One Review

Place Value

100

What number is in the tens place? 4,254

5

200

What is the value of the number 3? 42,354

300

300

What place is the 9 in? What is its value? 954,390,275 

Hundred Million

900,000,000

400

What is the value of the 7? 974,328,419

70,000,000

500

What number is in the ten thousands place? What is its value? 

 320,458,729

5

50,000

Comparing Numbers

100

375    907

<,>,=

375 < 907

200

25,123   25,245 

<,>,=

25,123 < 25,245

300

200,000 + 30,000+ 4,000 + 300 + 20 + 5 

234,325 

200,000 + 30, 000 + 4,000 + 300 +20 + 5 = 234,325

400

797,345,987   777,345,987 

<,>,= 

797,345,987 > 777,345,987 

500

500,000,000 + 70,000,000 + 2,000,000 + 300,000 + 20,000 + 5,000 + 200 + 30 + 2     571,325,232 

500,000,000 + 70,000,000 + 2,000,000 + 300,000 + 20,000 + 5,000 + 200 + 30 + 2 > 571,325,232 

Rounding

100

Round 273 to the nearest tens 

270

200

Round 4,766 to the nearest thousands place

5,000

300

Round 23,456 to the nearest hundreds 

23,500

400

Round 456,789 to the nearest ten thousands place 

460,000

500

Round to the nearest millions 789,254, 345

789,000,000

Expanded Form

100

Write 2,550 in expanded form 

2,000 + 500 + 50 

200

Write 254,278 in expanded form 

200,000 + 50,000 + 40 + 200 + 70 + 8

300

What number does this represent 300,000 + 50,000 + 2,000 + 400 + 20 + 8 

352, 428

400

Write 2,958,367

2,000,000 + 900,000 + 50,000 + 8,000 + 300 + 60 + 7 

500

write this number in expanded form 798,765,234

700,000,000 + 90,000,000 + 8,000,000 + 700,000 + 60,000 + 5,000 + 200 + 30 + 4