Fourth Topic 1

Expanded Form

100

Write this number in expanded form:

2,345

2,000 + 300 + 40 + 5

200

12,872

10,000 + 2,000 + 800 + 70 + 2

300

24,287

20,000 + 4,000 + 200 + 80 +7

400

45,612

40,000 + 5,000 + 600 + 10 + 2

500

958,923

900,000 + 50,000 + 8,000 + 900 + 20 + 3

Standard Form

100

Write this number in standard form

1,000 + 200 + 70 + 3

1,273

200

20,000 + 3,000 + 800 + 90 + 4

23,894

300

10,000 + 900 + 20 + 1

10,921

400

200,000 + 7,000 + 50 + 3

207,053

500

1,000,000 + 800,000 + 6,000 + 200 + 70

1,806,270

Word Form

100

7,823

seven thousand eight hundred twenty three

200

22,567

twenty two thousand five hundred sixty seven

300

347,882

three hundred forty seven thousand eight hundred eighty two

400

679,462

six hundred seventy nine thousand four hundred sixty two

500

1,972,221

one million nine hundred seventy two thousand two hundred twenty one

Place Value/Comparing

100

What is the value of the underlined digit

345,872

5,000

200

423,467

400,000

300

Compare these numbers

45,487              452,892

45,487     <         452,892

400

Compare these numbers

672,892                    672,882

672,892           >         672,882

500

Compare these numbers

46,312                     46,412

46,312       <              46,412

Rounding

100

Round to the value of the underlined digit

1,232

1,200

200

13,887

13,890

300

87,321

87,300

400

456,992

456,990

500

982,141

980,000