Show:
Addition upto 10
Addition upto 20
Doubles
Placevalue
Adding in 10's
100

1+2

3

100

5+6

11

100

2+2

4

100

3 thousands, 1 unit, 2 tens and 6 hundreds 

3621

100

2+10

12

200

4+2

6
200

7+8

15

200

4+4

8

200

3 hundred 4 tens 0 units 

340

200

8+10

18

300

5+3

8

300

12+5

17

300

6+6

12

300

7 thousands, 5 tens, 3 ones, 

7053

300

20+10

30

400

3+6

9

400

15+4

19

400

8+8

16

400

1 tens 6 units 

16

400
15 + 10

25

500

8+2

10

500

13+7

20

500

10+10

20

500

7 hundreds, 6 tens, 5 units 

765

500

90+10

100