🐉 Dragons5Grade 4Reading: grades 3-4AdditionSubtractionFractions of a numberWord problems

The Sanctuary Sabotage

A golden dragon egg has been swiped from the Hatchery! One of our trainee riders has gone rogue. We must track them down before the egg hatches in the wild.

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	Dragon Species	Rider Gear	Riding Style	Helmet Plume	Favorite Treat
Arya	Frostfang	Dragon Map	Left-handed	Ruby plume	Sweet nectar
Wyvern	Shadowclaw	Flame Whistle	Right-handed	Sapphire plume	Fire-grass
Fishlegs	Emberwing	Wind Goggles	Right-handed	Ruby plume	Sweet nectar
Pyre	Sunscale	Fireproof Shield	Left-handed	Emerald plume	Moonberries
Murtagh	Frostfang	Dragon Map	Right-handed	Ruby plume	Moonberries
Snotlout	Emberwing	Fireproof Shield	Right-handed	Emerald plume	Fire-grass
Scales	Shadowclaw	Dragon Map	Right-handed	Ruby plume	Moonberries
Ridley	Sunscale	Dragon Map	Right-handed	Ruby plume	Moonberries
Ignis	Frostfang	Fireproof Shield	Left-handed	Emerald plume	Fire-grass
Tuffnut	Shadowclaw	Flame Whistle	Right-handed	Emerald plume	Moonberries
Ember	Shadowclaw	Wind Goggles	Right-handed	Ruby plume	Moonberries
Basil	Frostfang	Fireproof Shield	Left-handed	Sapphire plume	Sweet nectar
Talon	Stormcrest	Dragon Map	Right-handed	Emerald plume	Fire-grass
Eragon	Sunscale	Fireproof Shield	Left-handed	Ruby plume	Moonberries
Astrid	Shadowclaw	Ice Saddle	Right-handed	Ruby plume	Moonberries
Angela	Sunscale	Wind Goggles	Left-handed	Sapphire plume	Moonberries
Blaze	Emberwing	Fireproof Shield	Left-handed	Ruby plume	Moonberries
Spark	Stormcrest	Fireproof Shield	Left-handed	Emerald plume	Sweet nectar
Hiccup	Frostfang	Fireproof Shield	Right-handed	Emerald plume	Sweet nectar
Drake	Frostfang	Dragon Map	Right-handed	Emerald plume	Moonberries
Jax	Sunscale	Flame Whistle	Left-handed	Ruby plume	Sweet nectar

Clue 1

Addition

We found the first clue by adding up the glowing fire-stones in the nest.

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

6385

5872

6248

7747

2693

6782

2728

6248

3089

2693

6248

3796

4447

2693

6385

2728

3796

6248

6892

4447

2385

2834

6248

3796

6892

3089

8029

6248

3048 + 3337 =T

3176 + 3716 =A

1363 + 1022 =I

3277 + 4470 =R

1356 + 1337 =O

1871 + 1218 =D

4206 + 2576 =G

1664 + 1064 =U

1485 + 2962 =N

1326 + 2470 =S

3604 + 2268 =H

1040 + 1794 =C

5597 + 2432 =L

1876 + 4372 =E

0/14 letters found

Clue 2

Subtraction

We subtracted the broken gear from the main chest to find the next 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.

6708

2728

8497

5917

8497

1527

7109

6768

1350

8497

5917

8497

2728

8497

8572

3684

1527

7109

6708

2728

8497

5917

1527

2374

2728

6708

2728

4630

7109

3684

7611 - 903 =T

5489 - 859 =A

11792 - 3220 =L

8560 - 63 =E

7610 - 1693 =R

4240 - 1866 =G

8186 - 4502 =D

3524 - 1997 =I

10479 - 3711 =S

5182 - 3832 =W

9360 - 2251 =N

4300 - 1572 =H

0/12 letters found

Clue 3

Fractions of a number

One-third of the sleeping dragons woke up and pointed us to this 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.

1/8 of 168 =T

1/5 of 175 =C

1/5 of 95 =K

5/6 of 30 =O

2/8 of 52 =M

3/5 of 65 =A

1/3 of 114 =R

1/4 of 28 =S

2/6 of 102 =I

1/8 of 64 =G

4/6 of 60 =N

4/8 of 22 =E

2/4 of 58 =H

1/2 of 8 =B

1/5 of 165 =D

0/15 letters found

Clue 4

Word problems

Solve this puzzle about flying speed to unlock the message on the wall.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Astrandof

hairturnedupatthescene.

There were 98 dragon treats. 36 were used up. How many dragon treats are left?R

Trainer found 27 golden eggs yesterday and 5 more today. How many golden eggs in all?P

Trainer lined up 10 rows of 2 shiny scales. How many shiny scales in all?Y

Trainer lined up 8 rows of 7 fire-stones. How many fire-stones in all?M

Trainer found 2 practice hoops yesterday and 61 more today. How many practice hoops in all?U

There were 57 fire-stones. 16 were used up. How many fire-stones are left?B

Trainer found 29 dragon treats yesterday and 26 more today. How many dragon treats in all?L

0/7 letters found

Clue 5

Fractions of a number — the last clue

The keeper shared half of the star-fruit to reveal the final 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

1/6 of 54 = ?

1/3 of 18 = ?

7/10 of 10 = ?

2/10 of 55 = ?

2/4 of 4 = ?

2/5 of 20 = ?

1/2 of 2 = ?

2/10 of 60 = ?

2/10 of 25 = ?

4/6 of 15 = ?

4/8 of 8 = ?

Step 2 — cross out the sentence with each answer

1.The villain shines brightly on a Sunscale, then blocks the sparks with a Fireproof Shield.

2.The villain hides in shadows on a Shadowclaw, then blasts a loud Flame Whistle.

3.The villain hides in shadows on a Shadowclaw, then peers through shiny Wind Goggles.

4.The villain hides in shadows on a Shadowclaw, then slides away on an Ice Saddle.

5.The villain shines brightly on a Sunscale, then peers through shiny Wind Goggles.

6.The villain shines brightly on a Sunscale, then checks the route on a Dragon Map.

7.The villain freezes the sky on a Frostfang, then checks the route on a Dragon Map.

8.The villain shines brightly on a Sunscale, then slides away on an Ice Saddle.

9.The villain hides in shadows on a Shadowclaw, then checks the route on a Dragon Map.

10.The villain freezes the sky on a Frostfang, then blasts a loud Flame Whistle.

11.The villain soars high on an Emberwing, then checks the route on a Dragon Map.

12.The villain freezes the sky on a Frostfang, then blocks the sparks with a Fireproof Shield.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Sanctuary Sabotage

Culprit: Ember (Shadowclaw · Wind Goggles · Right-handed · Ruby plume · Moonberries)

Clue 1 (Addition): "THE ROGUE DOES NOT USE AN ICE SADDLE"
3048 + 3337 = 6385 (T) · 3176 + 3716 = 6892 (A) · 1363 + 1022 = 2385 (I) · 3277 + 4470 = 7747 (R) · 1356 + 1337 = 2693 (O) · 1871 + 1218 = 3089 (D) · 4206 + 2576 = 6782 (G) · 1664 + 1064 = 2728 (U) · 1485 + 2962 = 4447 (N) · 1326 + 2470 = 3796 (S) · 3604 + 2268 = 5872 (H) · 1040 + 1794 = 2834 (C) · 5597 + 2432 = 8029 (L) · 1876 + 4372 = 6248 (E)
Clue 2 (Subtraction): "THE REINS WERE HELD IN THE RIGHT HAND"
7611 - 903 = 6708 (T) · 5489 - 859 = 4630 (A) · 11792 - 3220 = 8572 (L) · 8560 - 63 = 8497 (E) · 7610 - 1693 = 5917 (R) · 4240 - 1866 = 2374 (G) · 8186 - 4502 = 3684 (D) · 3524 - 1997 = 1527 (I) · 10479 - 3711 = 6768 (S) · 5182 - 3832 = 1350 (W) · 9360 - 2251 = 7109 (N) · 4300 - 1572 = 2728 (H)
Clue 3 (Fractions of a number): "THE DRAGON SNACKED ON MOONBERRIES"
1/8 of 168 = 21 (T) · 1/5 of 175 = 35 (C) · 1/5 of 95 = 19 (K) · 5/6 of 30 = 25 (O) · 2/8 of 52 = 13 (M) · 3/5 of 65 = 39 (A) · 1/3 of 114 = 38 (R) · 1/4 of 28 = 7 (S) · 2/6 of 102 = 34 (I) · 1/8 of 64 = 8 (G) · 4/6 of 60 = 40 (N) · 4/8 of 22 = 11 (E) · 2/4 of 58 = 29 (H) · 1/2 of 8 = 4 (B) · 1/5 of 165 = 33 (D)
Clue 4 (Word problems): "RUBY PLUME"
There were 98 dragon treats. 36 were used up. How many dragon treats are left? = 62 (R) · Trainer found 27 golden eggs yesterday and 5 more today. How many golden eggs in all? = 32 (P) · Trainer lined up 10 rows of 2 shiny scales. How many shiny scales in all? = 20 (Y) · Trainer lined up 8 rows of 7 fire-stones. How many fire-stones in all? = 56 (M) · Trainer found 2 practice hoops yesterday and 61 more today. How many practice hoops in all? = 63 (U) · There were 57 fire-stones. 16 were used up. How many fire-stones are left? = 41 (B) · Trainer found 29 dragon treats yesterday and 26 more today. How many dragon treats in all? = 55 (L)
Clue 5 (Fractions of a number): surviving statement (box 3) → Ember
1/6 of 54 = 9 · 1/3 of 18 = 6 · 7/10 of 10 = 7 · 2/10 of 55 = 11 · 2/4 of 4 = 2 · 2/5 of 20 = 8 · 1/2 of 2 = 1 · 2/10 of 60 = 12 · 2/10 of 25 = 5 · 4/6 of 15 = 10 · 4/8 of 8 = 4

About this mystery

Grade level: Grade 4 math
Math topics: Addition, Subtraction, Fractions of a number, Word problems
Reading level: grades 3-4
Theme: The Sanctuary Sabotage — set in Dragon Peak Sanctuary
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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