🐉 Dragons and castlesGrade 2Reading: grades 3-4Place valueAdditionSubtractionSkip countingMissing addends
The Great Castle Crumble
Someone has raided the royal kitchens of Stonefly Castle and eaten all the sweet honey buns! The Royal Bread-Baker is in tears. A sneaky rogue dragon was spotted flying away from the pantry tower. Use your detective skills to find the hungry dragon before the next feast is ruined!
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 | breath weapon | special scales | dragon type | tail tip style | favorite treat to stop them |
|---|---|---|---|---|---|
| Clawdia | purple lightning spark | smooth sapphire scales | winged drake | heavy stone club | smelly cheese wheels |
| Glimmer | purple lightning spark | bumpy ruby scales | winged drake | heavy stone club | smelly cheese wheels |
| Barnaby | hot orange flame | smooth sapphire scales | crested wyvern | heavy stone club | sweet apple tarts |
| Gemma | purple lightning spark | bumpy ruby scales | crested wyvern | sharp iron spike | smelly cheese wheels |
| Ash | hot orange flame | shiny emerald scales | winged drake | sharp iron spike | smelly cheese wheels |
| Scorch | sparkling frost breath | glowing gold scales | winged drake | soft feather tuft | smelly cheese wheels |
| Ember | thick black smoke | glowing gold scales | winged drake | soft feather tuft | sweet apple tarts |
| Flicker | hot orange flame | bumpy ruby scales | winged drake | heavy stone club | salty sea kelp |
| Wyvern | sparkling frost breath | spiky silver scales | crested wyvern | soft feather tuft | sweet apple tarts |
| Cinder | hot orange flame | glowing gold scales | winged drake | heavy stone club | smelly cheese wheels |
| Sparky | hot orange flame | shiny emerald scales | winged drake | heavy stone club | salty sea kelp |
| Blaze | sparkling frost breath | bumpy ruby scales | winged drake | heavy stone club | sweet apple tarts |
| Drake | green acid spray | glowing gold scales | winged drake | heavy stone club | smelly cheese wheels |
| Pyro | hot orange flame | smooth sapphire scales | crested wyvern | soft feather tuft | salty sea kelp |
| Scalez | sparkling frost breath | shiny emerald scales | crested wyvern | heavy stone club | smelly cheese wheels |
| Spike | purple lightning spark | smooth sapphire scales | crested wyvern | sharp iron spike | salty sea kelp |
| Talon | hot orange flame | smooth sapphire scales | winged drake | heavy stone club | sweet apple tarts |
| Boulder | green acid spray | shiny emerald scales | crested wyvern | sharp iron spike | sweet apple tarts |
| Ignis | hot orange flame | shiny emerald scales | winged drake | heavy stone club | smelly cheese wheels |
| Puff | hot orange flame | bumpy ruby scales | winged drake | heavy stone club | smelly cheese wheels |
| Pippin | hot orange flame | spiky silver scales | winged drake | sharp iron spike | smelly cheese wheels |
Clue 1
Place value (tens & ones)
Sir Gallant counts the golden bricks on the castle wall. The tens and ones blocks match a secret room number.
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
12
58
75
36
75
30
88
T
12
80
54
75
88
11
54
T
12
58
30
53
75
55
91
36
93
88
97
30
50
75
88
What number has 1 ten and 2 ones?T
What number has 5 tens and 0 ones?L
What number has 9 tens and 7 ones?C
What number has 5 tens and 4 ones?O
What number has 5 tens and 5 ones?R
What number has 8 tens and 8 ones?S
What number has 3 tens and 6 ones?B
What number has 3 tens and 0 ones?A
What number has 1 ten and 1 one?N
What number has 8 tens and 0 ones?D
What number has 5 tens and 3 ones?V
What number has 5 tens and 8 ones?H
What number has 9 tens and 3 ones?Y
What number has 9 tens and 1 one?U
What number has 7 tens and 5 ones?E
0/15 letters found
Clue 2
Addition
The royal guards gather all the dropped shield pieces. They must add the piles together to find the true count.
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
89
64
69
41
79
T
89
95
69
22
22
22
86
41
86
41
79
95
50
69
44
44
32
86
29
69
37 + 52 =T
28 + 58 =A
8 + 14 =S
21 + 11 =R
58 + 37 =N
55 + 24 =I
15 + 35 =G
23 + 46 =E
14 + 27 =W
20 + 9 =K
19 + 45 =H
19 + 25 =D
0/12 letters found
Clue 3
Subtraction
A greedy dragon stole some silver spoons from the great hall. We must subtract what is left to see how many are gone.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
64
23
33
11
11
79
50
83
33
33
S
64
33
38
51
11
11
S
64
88
30
39
88
83
51
S
64
69
33
81
S
64
88
67 - 3 =S
109 - 40 =B
30 - 19 =L
83 - 4 =Y
108 - 20 =T
56 - 33 =M
83 - 32 =I
114 - 31 =H
47 - 17 =O
58 - 19 =P
69 - 19 =C
55 - 22 =E
42 - 4 =W
99 - 18 =A
0/14 letters found
Clue 4
Skip counting
The wizard follows a trail of muddy claw prints up the spiral tower. The prints are spaced out in a skip counting pattern.
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
28
25
140
T
28
39
65
27
26
27
6
18
70
120
39
70
25
140
33
39
70
T
28
21
36
140
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32T
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39D
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10U
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140M
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30C
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35H
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24B
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33L
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42N
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45A
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80S
0/14 letters found
Clue 5
Missing addends — the last clue
The castle chef needs twenty magical berries for a pie. He has twelve and must figure out how many more are missing.
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
3 + ___ = 13
3 + ___ = 7
10 + ___ = 13
1 + ___ = 3
5 + ___ = 13
5 + ___ = 17
9 + ___ = 16
2 + ___ = 7
1 + ___ = 2
6 + ___ = 17
9 + ___ = 18
Step 2 — cross out the sentence with each answer
1.The villain zaps the pantry lock with sparks, then clinks against the castle guard rails.
2.The villain zaps the pantry lock with sparks, then scratches the stone walls.
3.The villain melts the castle door with acid, then shines brightly in the dark.
4.The villain zaps the pantry lock with sparks, then reflects the blue torchlight.
5.The villain toasts the kitchen roof with fire, then scratches the stone walls.
6.The villain toasts the kitchen roof with fire, then leaves green sparkles on the floor.
7.The villain zaps the pantry lock with sparks, then leaves green sparkles on the floor.
8.The villain fills the bakery with dark smoke, then leaves green sparkles on the floor.
9.The villain fills the bakery with dark smoke, then scratches the stone walls.
10.The villain toasts the kitchen roof with fire, then shines brightly in the dark.
11.The villain freezes the kitchen moat solid, then scratches the stone walls.
12.The villain melts the castle door with acid, then clinks against the castle guard rails.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Castle Crumble
Culprit: Ignis (hot orange flame · shiny emerald scales · winged drake · heavy stone club · smelly cheese wheels)
- Clue 1 (Place value (tens & ones)): "THE BEAST DOES NOT HAVE RUBY SCALES"What number has 1 ten and 2 ones? = 12 (T) · What number has 5 tens and 0 ones? = 50 (L) · What number has 9 tens and 7 ones? = 97 (C) · What number has 5 tens and 4 ones? = 54 (O) · What number has 5 tens and 5 ones? = 55 (R) · What number has 8 tens and 8 ones? = 88 (S) · What number has 3 tens and 6 ones? = 36 (B) · What number has 3 tens and 0 ones? = 30 (A) · What number has 1 ten and 1 one? = 11 (N) · What number has 8 tens and 0 ones? = 80 (D) · What number has 5 tens and 3 ones? = 53 (V) · What number has 5 tens and 8 ones? = 58 (H) · What number has 9 tens and 3 ones? = 93 (Y) · What number has 9 tens and 1 one? = 91 (U) · What number has 7 tens and 5 ones? = 75 (E)
- Clue 2 (Addition): "THE WITNESS SAW A WINGED DRAKE"37 + 52 = 89 (T) · 28 + 58 = 86 (A) · 8 + 14 = 22 (S) · 21 + 11 = 32 (R) · 58 + 37 = 95 (N) · 55 + 24 = 79 (I) · 15 + 35 = 50 (G) · 23 + 46 = 69 (E) · 14 + 27 = 41 (W) · 20 + 9 = 29 (K) · 19 + 45 = 64 (H) · 19 + 25 = 44 (D)
- Clue 3 (Subtraction): "SMELLY CHEESE WILL STOP THIS BEAST"67 - 3 = 64 (S) · 109 - 40 = 69 (B) · 30 - 19 = 11 (L) · 83 - 4 = 79 (Y) · 108 - 20 = 88 (T) · 56 - 33 = 23 (M) · 83 - 32 = 51 (I) · 114 - 31 = 83 (H) · 47 - 17 = 30 (O) · 58 - 19 = 39 (P) · 69 - 19 = 50 (C) · 55 - 22 = 33 (E) · 42 - 4 = 38 (W) · 99 - 18 = 81 (A)
- Clue 4 (Skip counting): "THE TAIL CLUB SMASHED A STONE"Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (T) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (D) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (U) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (M) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (C) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (H) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, ___, 21, 24 = 18 (B) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (L) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (N) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (A) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (S)
- Clue 5 (Missing addends): surviving statement (box 6) → Ignis3 + ___ = 13 = 10 · 3 + ___ = 7 = 4 · 10 + ___ = 13 = 3 · 1 + ___ = 3 = 2 · 5 + ___ = 13 = 8 · 5 + ___ = 17 = 12 · 9 + ___ = 16 = 7 · 2 + ___ = 7 = 5 · 1 + ___ = 2 = 1 · 6 + ___ = 17 = 11 · 9 + ___ = 18 = 9
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Place value, Addition, Subtraction, Skip counting, Missing addends
- Reading level
- grades 3-4
- Theme
- The Great Castle Crumble — set in Stonefly Castle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects