74
47
+ 10
37
47
57
67
29
+ 10
19
29
39
49
5
87 - 30 = ___
47
50
57
117
75 - 40 = ___
35
45
25
115
63 - 20 = ___
33
43
53
83
6
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
33
41 + 3 = 44
44 + 3 = 47
41 + 33 = 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
Explain your thinking:
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
55
52 + 5 = 57
57 + 5 = 62
52 + 25 = 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
Explain your thinking:
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
22
34 + 2 = 36
36 + 2 = 38
34 + 42 = 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
Explain your thinking:
What is the value of the underlined digit?
3
30
9
90
4
64
+ 10
54
64
84
74
Show your work:
47
+ 10
37
47
57
67
Show your work:
29
+ 10
19
29
39
49
Show your work:
5
87 - 30 =
47
50
57
117
Show your work:
75 - 40 =
35
45
25
115
Show your work:
63 - 20 =
33
43
53
83
Show your work:
6
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
303
Keila's Steps:
41 + 3 = 44
44 + 3 = 47
41 + 33 = 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
205
Julian's Steps:
52 + 5 = 57
57 + 5 = 62
52 + 25 = 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
402
Maya's Steps:
34 + 2 = 36
36 + 2 = 38
34 + 42 = 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
37
47
57
67
Draw to solve:
29
+ 10
19
29
39
49
Draw to solve:
5
87 - 30 =
47
50
57
117
Draw to solve:
75 - 40 =
35
45
25
115
Draw to solve:
63 - 20 =
33
43
53
83
Draw to solve:
6
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
33
41 + 3 = 44
44 + 3 = 47
41 + 33 = 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
55
52 + 5 = 57
57 + 5 = 62
52 + 25 = 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
22
34 + 2 = 36
36 + 2 = 38
34 + 42 = 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work below.
80
2
20
3. Value Spotter
Name:
Date:
39
What is the value of the underlined digit?
3
30
9
90
4. Tens Addition
Name:
Date:
64
+ 10
54
64
84
74
Show your work:
4. Tens Addition
Name:
Date:
47
+ 10
37
47
57
67
Show your work:
4. Tens Addition
Name:
Date:
29
+ 10
19
29
39
49
Show your work:
5. Tens Subtraction
Name:
Date:
87 - 30 =
47
50
57
117
Show your work:
5. Tens Subtraction
Name:
Date:
75 - 40 =
35
45
25
115
Show your work:
5. Tens Subtraction
Name:
Date:
63 - 20 =
33
43
53
83
Show your work:
6. Strategy Detective
Name:
Date:
6.1 Keila solved the problem: 41 + 33 = ______. Her work is shown below.
41 +
33
33
41 + 3 = 44 → 44 + 3 = 47
Result: 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work below.
6. Strategy Detective
Name:
Date:
6.2 Julian solved the problem: 52 + 25 = ______. His work is shown below.
52 +
25
55
52 + 5 = 57 → 57 + 5 = 62
Result: 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work below.
6. Strategy Detective
Name:
Date:
6.3 Maya solved the problem: 34 + 42 = ______. Her work is shown below.
34 +
42
22
34 + 2 = 36 → 36 + 2 = 38
Result: 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work below.
82
What is the value of the underlined digit?
8
80
2
20
39
What is the value of the underlined digit?
3
30
9
90
4
Tens Addition
64
+ 10
54
64
84
74
Show Work:
47
+ 10
37
47
57
67
Show Work:
29
+ 10
19
29
39
49
Show Work:
5
Tens Subtraction
87 - 30 =
47
50
57
117
Show Work:
75 - 40 =
35
45
25
115
Show Work:
63 - 20 =
33
43
53
83
Show Work:
6
Strategy Detective
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
303
Keila's steps: 41 + 3 = 44 → 44 + 3 = 47
41 + 33 = 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
205
Julian's steps: 52 + 5 = 57 → 57 + 5 = 62
52 + 25 = 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
402
Maya's steps: 34 + 2 = 36 → 36 + 2 = 38
34 + 42 = 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
82
What is the value of the underlined digit?
8
80
2
20
39
What is the value of the underlined digit?
3
30
9
90
4
Tens Addition
64
+ 10
54
64
84
74
Show your work below:
47
+ 10
37
47
57
67
Show your work below:
29
+ 10
19
29
39
49
Show your work below:
5
Tens Subtraction
87 - 30 =
47
50
57
117
Show your work below:
75 - 40 =
35
45
25
115
Show your work below:
63 - 20 =
33
43
53
83
Show your work below:
6
Strategy Detective
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
33
Keila's steps:
41 + 3 = 44
44 + 3 = 47
41 + 33 = 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
55
Julian's steps:
52 + 5 = 57
57 + 5 = 62
52 + 25 = 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
22
Maya's steps:
34 + 2 = 36
36 + 2 = 38
34 + 42 = 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
2
20
39
What is the value of the underlined digit?
3
30
9
90
4
64
+ 10
54
64
84
74
Show your work below:
47
+ 10
37
47
57
67
Show your work below:
29
+ 10
19
29
39
49
Show your work below:
5
87 - 30 =
47
50
57
117
Show your work below:
75 - 40 =
35
45
25
115
Show your work below:
63 - 20 =
33
43
53
83
Show your work below:
6
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
33
Keila's steps:
41 + 3 = 44
44 + 3 = 47
Scholar Answer: 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
55
Julian's steps:
52 + 5 = 57
57 + 5 = 62
Scholar Answer: 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
22
Maya's steps:
34 + 2 = 36
36 + 2 = 38
Scholar Answer: 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
What is the value of the underlined digit?
8
80
2
20
39
What is the value of the underlined digit?
3
30
9
90
4
64
+ 10
54
64
84
74
Show your work:
47
+ 10
37
47
57
67
Show your work:
29
+ 10
19
29
39
49
Show your work:
5
87 - 30 =
47
50
57
117
Show your work:
75 - 40 =
35
45
25
115
Show your work:
63 - 20 =
33
43
53
83
Show your work:
6
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
33
41 + 3 = 44 → 44 + 3 = 47
41 + 33 = 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
55
52 + 5 = 57 → 57 + 5 = 62
52 + 25 = 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
22
34 + 2 = 36 → 36 + 2 = 38
34 + 42 = 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
54
64
84
74
Show your work:
47
+ 10
37
47
57
67
Show your work:
29
+ 10
19
29
39
49
Show your work:
5
Tens Subtraction
87 - 30 =
47
50
57
117
Show your work:
75 - 40 =
35
45
25
115
Show your work:
63 - 20 =
33
43
53
83
Show your work:
6
Strategy Detective
Keila was solving the following problem: 41 + 33 = ______. Her work is shown below.
41 +
33
303
41 + 3 = 44 → 44 + 3 = 47
Scholar Answer: 47
Is Keila correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Julian was solving the following problem: 52 + 25 = ______. His work is shown below.
52 +
25
205
52 + 5 = 57 → 57 + 5 = 62
Scholar Answer: 62
Is Julian correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
Maya was solving the following problem: 34 + 42 = ______. Her work is shown below.
34 +
42
402
34 + 2 = 36 → 36 + 2 = 38
Scholar Answer: 38
Is Maya correct or incorrect? Bubble in your answer.
Correct
Incorrect
How do you know? Show your work in the space below.
