🔎 Harry PotterGrade 2Reading: grades 1-2AdditionPlace valueSubtractionSkip countingMissing addends
The Case of the Restricted Scroll
A sneaky rogue wizard has slipped into the library and taken a magical golden scroll! We must use our magic and logic to track them down. Let us solve the clues and save the school!
Suspects
Possible suspects
Cross off a row as each clue rules it out. On screen, tap a row.
21 of 21 still in play
| Name | favorite spell | magic item | writing hand | hair color | magic counter |
|---|---|---|---|---|---|
| Oliver | levitation charm | remembrall | right handed | bright red hair | bright light |
| Neville | shield charm | pocket cauldron | right handed | bushy brown hair | bright light |
| Lavender | summoning charm | marauders map | left handed | jet black hair | giggle potion |
| Cedric | tickling charm | marauders map | left handed | bushy brown hair | giggle potion |
| Gregory | freezing charm | marauders map | left handed | bushy brown hair | giggle potion |
| Percy | shield charm | marauders map | left handed | bushy brown hair | giggle potion |
| George | shield charm | invisibility cloak | left handed | bright red hair | giggle potion |
| Colin | levitation charm | pocket cauldron | left handed | bushy brown hair | bright light |
| Seamus | tickling charm | pocket cauldron | left handed | bright red hair | silly earmuffs |
| Dean | freezing charm | sneakoscope | left handed | jet black hair | bright light |
| Hermione | levitation charm | marauders map | right handed | bright red hair | giggle potion |
| Vincent | tickling charm | marauders map | left handed | bushy brown hair | silly earmuffs |
| Ginny | summoning charm | pocket cauldron | left handed | bright red hair | bright light |
| Fred | shield charm | remembrall | left handed | bushy brown hair | giggle potion |
| Blaise | tickling charm | pocket cauldron | left handed | bright red hair | giggle potion |
| Ron | tickling charm | sneakoscope | right handed | bright red hair | bright light |
| Susan | shield charm | marauders map | left handed | bright red hair | bright light |
| Harry | levitation charm | remembrall | left handed | bright red hair | giggle potion |
| Pansy | tickling charm | sneakoscope | left handed | jet black hair | giggle potion |
| Parvati | tickling charm | marauders map | left handed | bright red hair | giggle potion |
| Draco | freezing charm | marauders map | left handed | bright red hair | giggle potion |
Clue 1
Addition
We need to count the spilled potion bottles. Let us add the green bottles and red bottles together to find the first clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
71
78
40
22
53
40
49
33
84
43
28
26
49
57
59
78
49
22
53
46
57
40
36
40
36
83
57
49
56
56
26 + 45 =T
40 + 17 =R
28 + 12 =E
56 + 28 =Y
24 + 25 =A
21 + 15 =M
16 + 12 =I
11 + 22 =K
15 + 7 =S
32 + 27 =D
35 + 43 =H
25 + 31 =L
8 + 18 =Z
18 + 25 =W
35 + 48 =B
18 + 28 =O
30 + 23 =N
0/17 letters found
Clue 2
Place value
The library door has a secret lock. Look at the tens and ones on the dial to find the second clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
T
32
75
26
92
93
76
12
92
93
41
71
41
26
12
92
64
T
32
75
T
32
75
26
31
26
69
T
32
75
93
76
12
What number has 3 tens and 2 ones?T
What number has 2 tens and 6 ones?E
What number has 9 tens and 2 ones?W
What number has 4 tens and 1 one?S
What number has 7 tens and 6 ones?N
What number has 6 tens and 4 ones?I
What number has 1 ten and 2 ones?D
What number has 7 tens and 1 one?U
What number has 7 tens and 5 ones?H
What number has 9 tens and 3 ones?A
What number has 3 tens and 1 one?L
What number has 6 tens and 9 ones?F
0/12 letters found
Clue 3
Subtraction
Professor Flitwick had many feathers but some flew out the window. Subtract the lost feathers to get the third clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
A
22
15
82
49
A
22
15
24
54
29
87
33
87
87
49
83
82
54
70
33
54
14
28
33
49
49
15
70
54
82
70
24
83
13
39 - 17 =A
72 - 23 =L
80 - 10 =T
71 - 38 =I
48 - 20 =W
20 - 6 =N
59 - 5 =O
109 - 22 =G
101 - 18 =E
37 - 24 =M
109 - 27 =P
46 - 31 =S
41 - 12 =F
25 - 1 =H
0/14 letters found
Clue 4
Skip counting
The school owls are sitting on the branches in pairs. Skip count by twos to find the fourth clue.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
W
39
14
50
25
40
9
70
33
42
24
36
9
70
33
25
50
65
24
30
27
130
42
24
14
70
130
36
30
24
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45W
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150H
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33G
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28R
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15N
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35O
Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50I
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75B
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80D
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42A
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50U
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70F
0/15 letters found
Clue 5
Missing addends — the last clue
We have six chocolate frogs but we need ten in total. Find the missing number of frogs to get the last clue.
First solve each problem. Then find each answer in the list below and cross that sentence out. One sentence will be left — that's exactly what the villain did!
Step 1 — solve these
5 + ___ = 14
7 + ___ = 12
4 + ___ = 14
10 + ___ = 11
5 + ___ = 16
8 + ___ = 16
9 + ___ = 15
3 + ___ = 7
4 + ___ = 6
9 + ___ = 12
9 + ___ = 21
Step 2 — cross out the sentence with each answer
1.The villain uses a summoning charm, then drops a shiny remembrall.
2.The villain uses a summoning charm, then checks a noisy sneakoscope.
3.The villain shoots a freezing charm, then drops a shiny remembrall.
4.The villain uses a summoning charm, then consults the marauders map.
5.The villain creates a shield charm, then hides under an invisibility cloak.
6.The villain creates a shield charm, then brews in a pocket cauldron.
7.The villain shoots a freezing charm, then consults the marauders map.
8.The villain casts a levitation charm, then drops a shiny remembrall.
9.The villain performs a tickling charm, then consults the marauders map.
10.The villain performs a tickling charm, then brews in a pocket cauldron.
11.The villain creates a shield charm, then consults the marauders map.
12.The villain uses a summoning charm, then brews in a pocket cauldron.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Restricted Scroll
Culprit: Draco (freezing charm · marauders map · left handed · bright red hair · giggle potion)
- Clue 1 (Addition): "THE SNEAKY WIZARD HAS NO REMEMBRALL"26 + 45 = 71 (T) · 40 + 17 = 57 (R) · 28 + 12 = 40 (E) · 56 + 28 = 84 (Y) · 24 + 25 = 49 (A) · 21 + 15 = 36 (M) · 16 + 12 = 28 (I) · 11 + 22 = 33 (K) · 15 + 7 = 22 (S) · 32 + 27 = 59 (D) · 35 + 43 = 78 (H) · 25 + 31 = 56 (L) · 8 + 18 = 26 (Z) · 18 + 25 = 43 (W) · 35 + 48 = 83 (B) · 18 + 28 = 46 (O) · 30 + 23 = 53 (N)
- Clue 2 (Place value): "THE WAND WAS USED WITH THE LEFT HAND"What number has 3 tens and 2 ones? = 32 (T) · What number has 2 tens and 6 ones? = 26 (E) · What number has 9 tens and 2 ones? = 92 (W) · What number has 4 tens and 1 one? = 41 (S) · What number has 7 tens and 6 ones? = 76 (N) · What number has 6 tens and 4 ones? = 64 (I) · What number has 1 ten and 2 ones? = 12 (D) · What number has 7 tens and 1 one? = 71 (U) · What number has 7 tens and 5 ones? = 75 (H) · What number has 9 tens and 3 ones? = 93 (A) · What number has 3 tens and 1 one? = 31 (L) · What number has 6 tens and 9 ones? = 69 (F)
- Clue 3 (Subtraction): "A SPLASH OF GIGGLE POTION WILL STOP THEM"39 - 17 = 22 (A) · 72 - 23 = 49 (L) · 80 - 10 = 70 (T) · 71 - 38 = 33 (I) · 48 - 20 = 28 (W) · 20 - 6 = 14 (N) · 59 - 5 = 54 (O) · 109 - 22 = 87 (G) · 101 - 18 = 83 (E) · 37 - 24 = 13 (M) · 109 - 27 = 82 (P) · 46 - 31 = 15 (S) · 41 - 12 = 29 (F) · 25 - 1 = 24 (H)
- Clue 4 (Skip counting): "WE FOUND STRANDS OF BRIGHT RED HAIR"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (W) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (H) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (G) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, ___, 26, 28 = 24 (R) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (O) · Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50 = 30 (I) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (B) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (D) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (A) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50 = 40 (U) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70 = 50 (F)
- Clue 5 (Missing addends): surviving statement (box 7) → Draco5 + ___ = 14 = 9 · 7 + ___ = 12 = 5 · 4 + ___ = 14 = 10 · 10 + ___ = 11 = 1 · 5 + ___ = 16 = 11 · 8 + ___ = 16 = 8 · 9 + ___ = 15 = 6 · 3 + ___ = 7 = 4 · 4 + ___ = 6 = 2 · 9 + ___ = 12 = 3 · 9 + ___ = 21 = 12
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Place value, Subtraction, Skip counting, Missing addends
- Reading level
- grades 1-2
- Theme
- The Case of the Restricted Scroll — set in Hogwarts Castle Library
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects