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
Subtracting Without Renaming
135
Click on the appropriate choice. When done, click on the submit button.
What is the difference between the 2 numbers?
99
-
6
=
93
-
73
=
71
-
60
=
24
-
14
=
92
-
80
=
32
-
11
=
57
-
10
=
36
-
13
=
41
-
40
=
46
-
22
=
82
-
71
=
68
-
14
=
47
-
10
=
86
-
36
=
77
-
27
=
74
-
41
=
73
-
53
=
96
-
43
=
95
-
55
=
88
-
16
=
38
-
8
=
85
-
41
=
81
-
80
=
64
-
41
=
65
-
33
=
79
-
5
=
72
-
60
=
59
-
17
=
69
-
6
=
35
-
20
=
66
-
26
=
97
-
36
=
84
-
52
=
97
-
14
=
62
-
51
=
54
-
43
=
12
-
2
=
94
-
62
=
48
-
17
=
76
-
34
=
56
-
26
=
52
-
50
=
91
-
80
=
15
-
10
=
27
-
16
=
87
-
25
=
98
-
28
=
61
-
60
=
55
-
32
=
89
-
6
=
44
-
32
=
78
-
12
=
28
-
7
=
83
-
60
=