🐉 DragonsGrade 5Reading: grades 5-6RoundingAdditionSubtractionMultiplicationDivision

The Case of the Stolen Sky Dragon

At dawn the Hatchling Keeper of Ember Peak was snatched right off her ledge, and her bronze warning horn was left dangling over the cliff. Scorch marks, loose scales, and a single muddy claw print are all the clues the young dragon riders have. One of twenty-four roosting dragons did it, and only careful tracking will reveal which.

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	Secret Skill	Wing Type	Scale Color	Weakness
Ashfang	Lightning Breath	Storm Calling	Leathery Wings	Emerald Scales	Bright Mirrors
Stormhide	Fire Breath	Storm Calling	Leathery Wings	Crimson Scales	Cold Iron
Ironcrest	Fire Breath	Burrowing	Leathery Wings	Crimson Scales	Cold Iron
Ravenscale	Poison Mist	Storm Calling	Leathery Wings	Silver Scales	Bright Mirrors
Emberlyn	Lightning Breath	Shape Shifting	Leathery Wings	Emerald Scales	Bright Mirrors
Gildscale	Poison Mist	Mind Whisper	Leathery Wings	Silver Scales	Loud Bells
Drakemora	Frost Breath	Invisible Cloak	Feathered Wings	Silver Scales	Loud Bells
Kestrelwyrm	Fire Breath	Storm Calling	Leathery Wings	Emerald Scales	Cold Iron
Umbracoil	Stone Roar	Storm Calling	Leathery Wings	Crimson Scales	Cold Iron
Lumentail	Fire Breath	Shape Shifting	Leathery Wings	Emerald Scales	Cold Iron
Wyndrake	Stone Roar	Mind Whisper	Leathery Wings	Silver Scales	Cold Iron
Brindlewing	Stone Roar	Mind Whisper	Feathered Wings	Emerald Scales	Loud Bells
Hollowclaw	Frost Breath	Burrowing	Leathery Wings	Silver Scales	Bright Mirrors
Obsidamir	Frost Breath	Burrowing	Leathery Wings	Crimson Scales	Bright Mirrors
Pyrelock	Fire Breath	Burrowing	Leathery Wings	Crimson Scales	Bright Mirrors
Marrowsky	Stone Roar	Invisible Cloak	Leathery Wings	Silver Scales	Bright Mirrors
Jasperflight	Poison Mist	Invisible Cloak	Leathery Wings	Silver Scales	Bright Mirrors
Verdantail	Stone Roar	Storm Calling	Leathery Wings	Emerald Scales	Loud Bells
Thornveil	Lightning Breath	Invisible Cloak	Feathered Wings	Silver Scales	Bright Mirrors
Quillthorn	Stone Roar	Burrowing	Leathery Wings	Silver Scales	Bright Mirrors
Frostbeak	Poison Mist	Storm Calling	Leathery Wings	Emerald Scales	Cold Iron

Clue 1

Rounding

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

3100

20000

500000

310

2800000

4700

140000

500000

310

140

2800000

2800

500

3100

140

2800000

70000

3100

20000

500000

7000

3100

500

310

300

Round 3,107 to the nearest hundredT

Round 20,970 to the nearest ten thousandH

Round 507,210 to the nearest hundred thousandE

Round 314 to the nearest tenR

Round 2,848,990 to the nearest hundred thousandA

Round 4,718 to the nearest hundredI

Round 141,983 to the nearest ten thousandD

Round 141 to the nearest tenC

Round 2,759 to the nearest hundredN

Round 473 to the nearest hundredO

Round 74,923 to the nearest ten thousandL

Round 6,566 to the nearest thousandS

Round 317 to the nearest hundredM

0/13 letters found

Clue 2

Addition

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

4388

5204

9534

3171

2576

4538

7676

3171

4388

5766

5380

4388

7676

4538

7719

4538

4388

8806

2576

4538

7676

2133

5766

9534

5428

3377

3171

4388

8806

8282

4388

5766

5428

2328 + 2060 =A

1764 + 3440 =F

3897 + 5637 =I

1153 + 2018 =S

1090 + 1486 =H

1739 + 2799 =E

2432 + 5244 =R

4000 + 1766 =W

2603 + 2777 =B

2603 + 5116 =L

4736 + 4070 =T

1083 + 1050 =Y

2156 + 3272 =N

1945 + 1432 =G

5791 + 2491 =D

0/15 letters found

Clue 3

Subtraction

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

6664

5957

1953

1226

7203

8553

6664

5957

1953

1798

8553

8293

6164

8123

1986

5957

2047

7893

8123

6164

4940

6164

8123

4288

8123

2047

6664

1953

2658

1953

6664

8353 - 1689 =S

7352 - 1395 =H

4916 - 2963 =E

5501 - 4275 =F

9915 - 2712 =L

11957 - 3404 =A

2772 - 974 =D

9747 - 1454 =B

8360 - 2196 =R

10522 - 2399 =I

2939 - 953 =G

2563 - 516 =T

8708 - 815 =M

6863 - 1923 =O

6024 - 1736 =N

4756 - 2098 =Y

0/16 letters found

Clue 4

Multiplication facts (1–12)

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

108

110

11 × 4 =A

8 × 10 =S

9 × 12 =I

3 × 3 =L

6 × 9 =V

8 × 11 =E

7 × 7 =R

2 × 1 =C

11 × 9 =T

5 × 7 =U

11 × 10 =K

9 × 7 =O

8 × 12 =H

1 × 6 =N

6 × 6 =P

0/15 letters found

Clue 5

Division facts (1–12) — 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

10 ÷ 5 = ?

10 ÷ 2 = ?

6 ÷ 1 = ?

70 ÷ 7 = ?

24 ÷ 3 = ?

28 ÷ 7 = ?

33 ÷ 3 = ?

144 ÷ 12 = ?

18 ÷ 2 = ?

6 ÷ 2 = ?

77 ÷ 11 = ?

Step 2 — cross out the sentence with each answer

1.The villain freezes the gate shut with frost, then digs a tunnel under the nest.

2.The villain cracks the cliff with a stone roar, then digs a tunnel under the nest.

3.The villain scorches the ledge with fire, then whispers the guards to sleep.

4.The villain fogs the roost with poison mist, then whispers the guards to sleep.

5.The villain fogs the roost with poison mist, then slips by unseen under a cloak.

6.The villain cracks the cliff with a stone roar, then slips by unseen under a cloak.

7.The villain cracks the cliff with a stone roar, then takes the shape of a friendly dragon.

8.The villain fries the warning horn with lightning, then slips by unseen under a cloak.

9.The villain fogs the roost with poison mist, then takes the shape of a friendly dragon.

10.The villain fries the warning horn with lightning, then digs a tunnel under the nest.

11.The villain scorches the ledge with fire, then digs a tunnel under the nest.

12.The villain fogs the roost with poison mist, then digs a tunnel under the nest.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Case of the Stolen Sky Dragon

Culprit: Hollowclaw (Frost Breath · Burrowing · Leathery Wings · Silver Scales · Bright Mirrors)

Clue 1 (Rounding): "THE RAIDER CANNOT CALL THE STORM"
Round 3,107 to the nearest hundred = 3100 (T) · Round 20,970 to the nearest ten thousand = 20000 (H) · Round 507,210 to the nearest hundred thousand = 500000 (E) · Round 314 to the nearest ten = 310 (R) · Round 2,848,990 to the nearest hundred thousand = 2800000 (A) · Round 4,718 to the nearest hundred = 4700 (I) · Round 141,983 to the nearest ten thousand = 140000 (D) · Round 141 to the nearest ten = 140 (C) · Round 2,759 to the nearest hundred = 2800 (N) · Round 473 to the nearest hundred = 500 (O) · Round 74,923 to the nearest ten thousand = 70000 (L) · Round 6,566 to the nearest thousand = 7000 (S) · Round 317 to the nearest hundred = 300 (M)
Clue 2 (Addition): "A FISHER SAW BARE LEATHERY WINGS AT DAWN"
2328 + 2060 = 4388 (A) · 1764 + 3440 = 5204 (F) · 3897 + 5637 = 9534 (I) · 1153 + 2018 = 3171 (S) · 1090 + 1486 = 2576 (H) · 1739 + 2799 = 4538 (E) · 2432 + 5244 = 7676 (R) · 4000 + 1766 = 5766 (W) · 2603 + 2777 = 5380 (B) · 2603 + 5116 = 7719 (L) · 4736 + 4070 = 8806 (T) · 1083 + 1050 = 2133 (Y) · 2156 + 3272 = 5428 (N) · 1945 + 1432 = 3377 (G) · 5791 + 2491 = 8282 (D)
Clue 3 (Subtraction): "SHE FLASHED A BRIGHT MIRROR IN ITS EYES"
8353 - 1689 = 6664 (S) · 7352 - 1395 = 5957 (H) · 4916 - 2963 = 1953 (E) · 5501 - 4275 = 1226 (F) · 9915 - 2712 = 7203 (L) · 11957 - 3404 = 8553 (A) · 2772 - 974 = 1798 (D) · 9747 - 1454 = 8293 (B) · 8360 - 2196 = 6164 (R) · 10522 - 2399 = 8123 (I) · 2939 - 953 = 1986 (G) · 2563 - 516 = 2047 (T) · 8708 - 815 = 7893 (M) · 6863 - 1923 = 4940 (O) · 6024 - 1736 = 4288 (N) · 4756 - 2098 = 2658 (Y)
Clue 4 (Multiplication facts (1–12)): "A SILVER SCALE STUCK TO THE HORN ROPE"
11 × 4 = 44 (A) · 8 × 10 = 80 (S) · 9 × 12 = 108 (I) · 3 × 3 = 9 (L) · 6 × 9 = 54 (V) · 8 × 11 = 88 (E) · 7 × 7 = 49 (R) · 2 × 1 = 2 (C) · 11 × 9 = 99 (T) · 5 × 7 = 35 (U) · 11 × 10 = 110 (K) · 9 × 7 = 63 (O) · 8 × 12 = 96 (H) · 1 × 6 = 6 (N) · 6 × 6 = 36 (P)
Clue 5 (Division facts (1–12)): surviving statement (box 1) → Hollowclaw
10 ÷ 5 = 2 · 10 ÷ 2 = 5 · 6 ÷ 1 = 6 · 70 ÷ 7 = 10 · 24 ÷ 3 = 8 · 28 ÷ 7 = 4 · 33 ÷ 3 = 11 · 144 ÷ 12 = 12 · 18 ÷ 2 = 9 · 6 ÷ 2 = 3 · 77 ÷ 11 = 7

About this mystery

Grade level: Grade 5 math
Math topics: Rounding, Addition, Subtraction, Multiplication, Division
Reading level: grades 5-6
Theme: The Case of the Stolen Sky Dragon — set in the cliffside roost of Ember Peak
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects