Owl Egg
staying ahead wisely
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You have 20 minutes to finish this exercise
Name
Subject
Level
Section
Exercise
Lesson
Sample User
Math
1
Subtracting Numbers
Subtraction Sentences
137
Click on the appropriate choice. When done, click on the submit button.
What number would complete the sentence?
-
8
=
10
-
4
=
6
-
2
=
2
-
9
=
10
-
3
=
2
-
3
=
10
-
9
=
1
-
5
=
5
-
5
=
7
-
0
=
8
-
2
=
9
-
7
=
4
-
0
=
10
-
7
=
7
-
8
=
2
-
3
=
7
-
6
=
7
-
8
=
7
-
0
=
4
-
6
=
3
-
6
=
4
-
8
=
8
-
0
=
6
-
5
=
9
-
7
=
3
-
9
=
3
-
3
=
4
-
0
=
9
-
1
=
1
-
1
=
6
-
5
=
1
-
5
=
3
-
8
=
6
-
6
=
10
-
4
=
2
-
4
=
3
-
4
=
4
-
8
=
1
-
5
=
2
-
0
=
7
-
4
=
10
-
2
=
6
-
6
=
5
-
1
=
4
-
3
=
3
-
2
=
5
-
9
=
8
-
7
=
2
-
1
=
2
-
1
=
3
-
6
=
1
-
4
=
9
-
3
=
6
-
9
=
6
-
4
=
5
-
9
=
4
-
1
=
10
-
5
=
8
-
9
=
7
-
6
=
9
-
7
=
8
-
0
=
5
-
5
=
10
-
0
=
1
-
1
=
7
-
2
=
3
-
1
=
9
-
5
=
6
-
2
=
4
-
6
=
2
-
0
=
2
-
3
=
8
-
7
=
5
-
9
=
9
-
2
=
10
-
5
=
4
-
1
=
5
-
0
=
3
-
7
=
6
-
7
=
9
-
3
=
1
-
6
=
8
-
4
=
8
-
2
=
1
-
1
=
8
-
9
=
5
-
8
=
4
-
8
=
3
-
2
=
8
-
8
=
9
-
7
=
10
-
6
=
6
-
4
=
1
-
3
=
5
-
9
=
2
-
2
=
7
-
4
=
7
-
8
=
5
-
7
=
1
-
3
=
9