🐉 DragonsGrade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Mystery of the Rogue Dragon
A rogue dragon raided the Great Hatchery and snatched the Sacred Fire Egg! The Grand Dragon Keeper needs your help to decode the clues, track down the culprit, and save the egg before it hatches.
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 | Primary Attack | Special Trait | Dominant Claw | Crest Color | Secret Weakness |
|---|---|---|---|---|---|
| Draco | Frost Breath | Sonic Screech | Left-clawed | Ruby Crest | Moon Bell |
| Shenron | Frost Breath | Flame Aura | Right-clawed | Emerald Crest | Starlight Gem |
| Ridley | Lightning Roar | Flame Aura | Left-clawed | Ruby Crest | Starlight Gem |
| Smaug | Magma Blast | Crystal Tail | Right-clawed | Ruby Crest | Ice Moss |
| Vermithrax | Frost Breath | Smoke Screen | Left-clawed | Ruby Crest | Moon Bell |
| Onyx | Acid Spit | Crystal Tail | Left-clawed | Sapphire Crest | Moon Bell |
| Charizard | Frost Breath | Smoke Screen | Left-clawed | Sapphire Crest | Ice Moss |
| Flare | Frost Breath | Iron Scales | Right-clawed | Ruby Crest | Moon Bell |
| Pyre | Frost Breath | Sonic Screech | Right-clawed | Sapphire Crest | Starlight Gem |
| Scorch | Acid Spit | Smoke Screen | Right-clawed | Ruby Crest | Starlight Gem |
| Mushu | Lightning Roar | Crystal Tail | Right-clawed | Emerald Crest | Starlight Gem |
| Dragonite | Frost Breath | Crystal Tail | Right-clawed | Sapphire Crest | Starlight Gem |
| Toothless | Gale Wing | Iron Scales | Left-clawed | Ruby Crest | Starlight Gem |
| Falkor | Acid Spit | Crystal Tail | Left-clawed | Emerald Crest | Starlight Gem |
| Haku | Magma Blast | Flame Aura | Left-clawed | Ruby Crest | Moon Bell |
| Spyro | Acid Spit | Iron Scales | Right-clawed | Ruby Crest | Starlight Gem |
| Ember | Frost Breath | Smoke Screen | Right-clawed | Ruby Crest | Starlight Gem |
| Crimson | Magma Blast | Sonic Screech | Right-clawed | Ruby Crest | Starlight Gem |
| Cinder | Magma Blast | Iron Scales | Left-clawed | Ruby Crest | Starlight Gem |
| Blaze | Gale Wing | Flame Aura | Right-clawed | Ruby Crest | Starlight Gem |
| Norbert | Gale Wing | Iron Scales | Left-clawed | Ruby Crest | Ice Moss |
Clue 1
Rounding
The cave lookout radar rounded the dragon flight speed to the nearest hundred.
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
2300
90
170
300
700
1300
1300
30
700
5000
2900
200
170
4300
5000
200
T
2300
90
30
300
170
30
4300
200
5000
700
130
4300
130
50
170
170
130
90
Round 2,326 to the nearest hundredT
Round 682 to the nearest hundredI
Round 4,703 to the nearest thousandN
Round 48 to the nearest tenR
Round 1,270 to the nearest hundredL
Round 134 to the nearest tenC
Round 180 to the nearest hundredO
Round 348 to the nearest hundredV
Round 2,919 to the nearest hundredD
Round 167 to the nearest tenE
Round 86 to the nearest tenH
Round 4,338 to the nearest hundredS
Round 28 to the nearest tenA
0/13 letters found
Clue 2
Addition
The dragon keeper added up all the dropped scales found near both roosts.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
R
4378
5331
9324
9086
9682
6739
2319
8476
8173
9051
8476
R
4378
9281
9066
8173
8308
R
4378
8308
2319
8308
3205
9682
9797
8308
8476
R
4378
9682
9086
8308
9682
R
4378
8308
8476
9066
5731
R
4378
8308
1472 + 2906 =R
1542 + 777 =L
4874 + 3434 =E
4038 + 5028 =S
3307 + 5744 =M
4024 + 4149 =W
2473 + 3258 =U
3000 + 6797 =N
2452 + 2879 =I
2803 + 6283 =H
1848 + 1357 =F
4423 + 4901 =G
4505 + 5177 =T
6309 + 2972 =K
4741 + 3735 =A
2647 + 4092 =C
0/16 letters found
Clue 3
Subtraction
We subtracted the stolen gold coins from the total in the dragon vault.
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
2619
7937
6161
A
2619
5370
1522
8562
3736
5045
6161
3736
4422
2426
5370
4422
4872
1522
4422
6543
6161
4422
4878
6161
5045
4422
4872
8562
5370
4422
1136
1522
A
2619
7937
6161
4403 - 1784 =A
6844 - 301 =C
9601 - 4723 =D
11536 - 2974 =I
9552 - 4182 =R
11783 - 3846 =S
9672 - 3511 =T
2703 - 1181 =L
4493 - 2067 =M
8017 - 2972 =H
1490 - 354 =B
8062 - 4326 =G
7848 - 3426 =E
8812 - 3940 =F
0/14 letters found
Clue 4
Multiplication facts (1-12)
The guards checked four rows of stone nests holding equal numbers of gems.
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
42
2
100
30
50
56
2
49
24
36
24
56
A
42
9
49
121
49
9
9
33
28
36
3
49
8
33
100
28
36
A
42
25
28
7 × 6 =A
1 × 3 =H
7 × 7 =E
1 × 9 =L
5 × 5 =I
2 × 4 =M
6 × 4 =S
9 × 4 =T
2 × 1 =R
5 × 10 =Y
11 × 11 =F
10 × 10 =U
4 × 7 =N
3 × 11 =O
8 × 7 =C
10 × 3 =B
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
The dragon trainer split the fish rewards equally among the hatchlings.
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
60 ÷ 10 = ?
18 ÷ 6 = ?
14 ÷ 7 = ?
24 ÷ 3 = ?
16 ÷ 4 = ?
55 ÷ 5 = ?
40 ÷ 4 = ?
7 ÷ 1 = ?
24 ÷ 2 = ?
1 ÷ 1 = ?
36 ÷ 4 = ?
Step 2 — cross out the sentence with each answer
1.The villain roared lightning into the sky, then swung a crystal tail.
2.The villain sprayed acid on the shield, then deflected spears with iron scales.
3.The villain flapped gale wings over the peak, then lit up a flame aura.
4.The villain spit magma at the gates, then lit up a flame aura.
5.The villain sprayed acid on the shield, then vanished into a smoke screen.
6.The villain blasted frost across the cave, then vanished into a smoke screen.
7.The villain blasted frost across the cave, then deflected spears with iron scales.
8.The villain roared lightning into the sky, then vanished into a smoke screen.
9.The villain sprayed acid on the shield, then lit up a flame aura.
10.The villain sprayed acid on the shield, then shrieked a sonic screech.
11.The villain roared lightning into the sky, then deflected spears with iron scales.
12.The villain spit magma at the gates, then swung a crystal tail.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Rogue Dragon
Culprit: Scorch (Acid Spit · Smoke Screen · Right-clawed · Ruby Crest · Starlight Gem)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT HAVE A SONIC SCREECH"Round 2,326 to the nearest hundred = 2300 (T) · Round 682 to the nearest hundred = 700 (I) · Round 4,703 to the nearest thousand = 5000 (N) · Round 48 to the nearest ten = 50 (R) · Round 1,270 to the nearest hundred = 1300 (L) · Round 134 to the nearest ten = 130 (C) · Round 180 to the nearest hundred = 200 (O) · Round 348 to the nearest hundred = 300 (V) · Round 2,919 to the nearest hundred = 2900 (D) · Round 167 to the nearest ten = 170 (E) · Round 86 to the nearest ten = 90 (H) · Round 4,338 to the nearest hundred = 4300 (S) · Round 28 to the nearest ten = 30 (A)
- Clue 2 (Addition): "RIGHT CLAW MARKS WERE LEFT NEAR THE TREASURE"1472 + 2906 = 4378 (R) · 1542 + 777 = 2319 (L) · 4874 + 3434 = 8308 (E) · 4038 + 5028 = 9066 (S) · 3307 + 5744 = 9051 (M) · 4024 + 4149 = 8173 (W) · 2473 + 3258 = 5731 (U) · 3000 + 6797 = 9797 (N) · 2452 + 2879 = 5331 (I) · 2803 + 6283 = 9086 (H) · 1848 + 1357 = 3205 (F) · 4423 + 4901 = 9324 (G) · 4505 + 5177 = 9682 (T) · 6309 + 2972 = 9281 (K) · 4741 + 3735 = 8476 (A) · 2647 + 4092 = 6739 (C)
- Clue 3 (Subtraction): "A STARLIGHT GEM REFLECTED THE FIRE BLAST"4403 - 1784 = 2619 (A) · 6844 - 301 = 6543 (C) · 9601 - 4723 = 4878 (D) · 11536 - 2974 = 8562 (I) · 9552 - 4182 = 5370 (R) · 11783 - 3846 = 7937 (S) · 9672 - 3511 = 6161 (T) · 2703 - 1181 = 1522 (L) · 4493 - 2067 = 2426 (M) · 8017 - 2972 = 5045 (H) · 1490 - 354 = 1136 (B) · 8062 - 4326 = 3736 (G) · 7848 - 3426 = 4422 (E) · 8812 - 3940 = 4872 (F)
- Clue 4 (Multiplication facts (1-12)): "A RUBY CREST SCALE FELL ON THE MOUNTAIN"7 × 6 = 42 (A) · 1 × 3 = 3 (H) · 7 × 7 = 49 (E) · 1 × 9 = 9 (L) · 5 × 5 = 25 (I) · 2 × 4 = 8 (M) · 6 × 4 = 24 (S) · 9 × 4 = 36 (T) · 2 × 1 = 2 (R) · 5 × 10 = 50 (Y) · 11 × 11 = 121 (F) · 10 × 10 = 100 (U) · 4 × 7 = 28 (N) · 3 × 11 = 33 (O) · 8 × 7 = 56 (C) · 10 × 3 = 30 (B)
- Clue 5 (Division facts (1-12)): surviving statement (box 5) → Scorch60 ÷ 10 = 6 · 18 ÷ 6 = 3 · 14 ÷ 7 = 2 · 24 ÷ 3 = 8 · 16 ÷ 4 = 4 · 55 ÷ 5 = 11 · 40 ÷ 4 = 10 · 7 ÷ 1 = 7 · 24 ÷ 2 = 12 · 1 ÷ 1 = 1 · 36 ÷ 4 = 9
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Rogue Dragon — set in The Dragon Roost Peaks
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects