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Addition (up to 3) within 20

English 19 Public

addition and subtraction up to 20 +1 +2 +3

Study Slideshow

1+1

=2

15

1+2

=3

15

2+2

=4

15

2+3

=5

15

5+1

=6

15

5+2

=7

15

5+3

=8

15

8+1

=9

15

8+2

=10

15

8+3

=11

15

11+1

=12

15

11+2

=13

15

11+3

=14

15

14 + 1

=15

15

14+2

=16

15

14+3

=17

15

1
2
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