Addition to 20
Subtraction within 20
Place Value
Number Forms
Zero in the Tens
100

3 + 5

8

100

3 - 2

1

100

7 ones is equal to

7

100

Word form for 7

seven

100

103 + 23 = 

126

200

8 + 4

12

200

8 - 6

2

200

1 ten and 6 ones is equal to 

16

200

Twenty nine in standard form

29

200

307 - 102 =

205

300

10 + 10 

20

300

16 - 13

3

300

7 tens is equal to

70

300

200 + 10 + 8 in word form

two hundred eighteen

300

706 + 39 = 

745

400

12 + 6

18

400

18 - 9

9

400

2 hundreds, 3 tens and 4 ones is equal to

234

400

740 in expanded form

700 + 40

400

804 - 639 = 

165

500

16 + 4

20

500

20 - 13

7

500

5 ones, zero tens and 4 hundreds is equal to

405

500

900 + 60 + 3 in standard form

963

500

500 + 500 = 

1,000