Addition

0-20

100

2

0+2

1+1

200

10

0+10

1+9

2+8

3+7

4+6

5+5

300

13

0+13

1+12

2+11

3+10

4+9

5+8

6+7

400

18

0+18

1+17

2+16

3+15

4+14

5+13

6+12

7+11

8+10

9+9

500

20

0+20

1+19

2+18

3+17

4+16

5+15

6+14

7+13

8+12

9+11

10+10

21-40

100

22

0+22, 1+21, 2+20, 3+19, 4+18, 5+17, 6+16, 7+15, 8+14, 9+13, 10+12, 11+11

200

27

0+27, 1+26, 2+25, 3+24, 4+23, 5+22, 6+21, 7+20, 8+19, 9+18, 10+17, 11+16, 12+17, 13+16, 14+15

300

30

0+30, 1+29, 2+28, 3+27, 4+26, 5+25, 6+24, 7+23, 8+22, 9+21, 10+20, 11+19, 12+18, 13+17, 14+16, 15+15

400

33

0+33, 1+32, 2+31, 3+30, 4+29, 5+28, 6+27, 7+26, 8+25, 9+24, 10+23, 11+22, 12+21, 13+20, 14+19, 15+18, 16+17

500

39

0+39, 1+38, 2+37, 3+36, 4+35, 5+34, 6+33, 7+32, 8+31, 9+30, 10+29, 11+28, 12+27, 13+26, 14+25, 15+24, 16+23, 17+22, 18+21, 19+20

41-60

100

41

0+41, 1+40, 2+39, 3+38, 4+37, 5+36, 6+35, 7+34, 8+33, 9+32, 10+31, 11+30, 12+29, 13+28, 14+27, 15+26, 16+25, 17+24, 18+23, 19+22, 20+21

200

44

0+44, 1+43, 2+42, 3+41, 4+40, 5+39, 6+38, 7+37, 8+36, 9+35, 10+34, 11+33, 12+32, 13+31, 14+30, 15+29, 16+28, 17+27, 18+26, 19+25, 20+24, 21+31, 22+22

300

50

0+50, 1+49, 2+48, 3+47, 4+46, 5+45, 6+44, 7+43, 8+42, 9+41, 10+40, 11+39, 12+38, 13+37, 14+36, 15+35, 16+34, 17+33, 18+32, 19+31, 20+30, 21+29, 22+28, 23+27, 24+26, 25+25

400

56

0+56, 1+55, 2+54, 3+53, 4+52, 5+51, 6+50, 7+49, 8+48, 9+47, 10+46, 11+45, 12+44, 13+43, 14+42, 15+41, 16+40, 17+39, 18+38, 19+37, 20+36, 21+35, 22+34, 23+33, 24+32, 25+31, 26+30, 27+29, 28+28

500

58

0+58, 1+57, 2+56, 3+55, 4+54, 5+53, 6+52, 7+51, 8+50, 9+49, 10+48, 11+47, 12+46, 13+45, 14+44, 15+43, 16+42, 17+41, 18+40, 19+39, 20+38, 21+37, 22+36, 23+35, 24+34, 25+33, 26+32, 27+31, 28+30, 29+29

Tools

100

Chart full of numbers

Hundred's Chart

200

Numbers in a row

Number Line

300

You have 10

Fingers

400

In your head

Counting On

500

Any item you find

Counters

Odd or Even

100

50+50

100

Even

200

123+0

123

Odd

300

73+11

84

Even

400

83+93=

176 

Even

500

761+167

928

Even