Number Forms

Standard Form

100

What is twenty in standard form? 

20

200

20+3=

23

300

40+5=

45

400

100 + 80 + 5=

185

500

one hundred twenty-four

124

Extended Form

100

10 + 3

13

200

30 + 8=

38

300

500 + 9

509

400

300 + 70 + 9 =

379

500

1,000 + 700 + 3

1,703

Unit Form

100

14

1 ten 

4 ones

200

39

3 tens

9 ones

300

349

3 hundreds

4 tens

9 ones

400

801

8 hundreds

1 ones

500

910

9 hundreds

1 ten

Place Value

100

What is the value of 5 in 25

5 ones

200

What is the value of 4 in 340

40

300

What is the value of 2 in 289? 

200

400

What is the value of 8 in 980? 

80

500

What is the value of 1 in 1,785? 

1,000

Count by..

100

Count from 11 to 23 by ones. 

11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23

200

Count from 97 to 120 using ones and tens. 

97, 98, 99, 100, 110, 120

300

Count from 70 to 134 with tens and ones.

70, 80, 90, 100, 110, 120, 130, 131, 132, 133, 134

400

Count from 99 to 310 using ones, hundreds, and tens. 

99, 100, 200, 300, 310

500

Count from 90 to 1,000 using tens and hundreds. 

90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1,000.