Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/150

Click to flip

150 Cards in this Set

  • Front
  • Back
0+15=
15
0+16=
16
0+17=
17
0+18=
18
0+19=
19
0+20=
20
1+0=
1
1+1=
2
1+2=
3
1+3=
4
1+4=
5
1+5=
6
1+6=
7
1+7=
8
1+8=
9
1+9=
10
1+10=
11
1+11=
12
1+12=
13
1+13=
14
1+14=
15
1+15=
16
1+16=
17
1+17=
18
1+18=
19
1+19=
20
2+0=
2
2+1=
3
2+2=
4
2+3=
5
2+4=
6
2+5=
7
2+6=
8
2+7
9
2+8=
10
2+9=
11
2+10=
12
2+11=
13=
2+12=
14
2+13=
15
2+14=
16
2+15=
17
2+16=
18
2+17=
19
2+18=
20
3+0=
3
3+1=
4
3+2=
5
3+3=
6
3+4=
7
3+5=
8
3+6=
9
3+7=
10
3+8=
11
3+9=
12
3+10=
13
3+11=
14
3+12=
15
3+13=
16
3+14=
17
3+15=
18
3+16=
19
3+17=
20
4+0=
4
4+1=
5
4+2=
6
4+3=
7
4+4=
8
4+5=
9
4+6=
10
4+7=
11
4+8=
12
4+9=
13
4+10=
14
4+11=
15
4+12=
16
4+13=
17
4+14=
18
4+15=
19
4+16=
20
5+0=
5
5+1=
6
5+2=
7
5+3=
8
5+4=
9
5+5=
10
5+6=
11
5+7=
12
5+8=
13
5+9=
14
5+10=
15
5+11=
16
5+12=
17
5+13=
18
5+14=
19
5+15=
20
6+0=
6
6+1=
7
6+2=
8
6+3=
9
6+4=
10
6+5=
11
6+6=
12
6+7=
13
6+8=
14
6+9=
15
6+10=
16
6+11=
17
6+12=
18
6+13=
19
6+14=
20
7+0=
7
7+1=
8
7+2=
9
7+3=
10
7+4=
11
7+5=
12
7+6=
13
7+7=
14
7+8=
15
7+9=
16
7+10=
17
7+11=
18
7+12=
19
7+13=
20
8+0=
8
8+1=
9
8+2=
10
8+3=
11
8+4=
12
8+5=
13
8+6=
14
8+7=
15
8+8=
16
8+9=
17
8+10=
18
8+11=
19
8+12=
20
9+0=
9
9+1=
10
9+2=
11
9+3=
12
9+4=
13
9+5=
14
9+6=
15
9+7=
16
9+8=
17
9+9=
18
9+10=
19
9+11=
20