🔎 FABLEHAVENGrade 4Reading: grades 3-4AdditionSubtractionRoundingSkip countingDivision
The Fablehaven Intruder
An impostor has slipped past the magical gates of Fablehaven! They are stealing powerful artifacts and letting dangerous creatures loose. Kendra and Seth must use their knowledge of the preserve to identify the culprit before the magical barriers fail completely. Follow the clues to save the sanctuary!
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 | Magical Skill | Stolen Artifact | Casting Style | Magical Trace | Defense Item |
|---|---|---|---|---|---|
| Newt | potion brewer | chronometer watch | left-handed casting | gold fairy dust hair | magical milk |
| Raxtus | shadow charmer | giant slayer sword | right-handed casting | black shadow residue | magical milk |
| Hugo | fairy whisperer | translocator key | left-handed casting | silver cocoon threads | distilled salt water |
| Kendra | potion brewer | sands of sanctity | left-handed casting | black shadow residue | distilled salt water |
| Chalice | fairy whisperer | giant slayer sword | right-handed casting | black shadow residue | distilled salt water |
| Knox | golem commander | giant slayer sword | left-handed casting | gold fairy dust hair | distilled salt water |
| Muriel | golem commander | chronometer watch | left-handed casting | silver cocoon threads | distilled salt water |
| Kurisock | fairy whisperer | sands of sanctity | left-handed casting | silver cocoon threads | distilled salt water |
| Ephira | demon binder | chronometer watch | right-handed casting | silver cocoon threads | distilled salt water |
| Patton | golem commander | sands of sanctity | left-handed casting | black shadow residue | distilled salt water |
| Warren | fairy whisperer | oculus crystal | left-handed casting | silver cocoon threads | distilled garlic |
| Seth | potion brewer | translocator key | left-handed casting | black shadow residue | magical milk |
| Tanu | golem commander | giant slayer sword | right-handed casting | silver cocoon threads | distilled salt water |
| Olloch | fairy whisperer | translocator key | left-handed casting | gold fairy dust hair | magical milk |
| Lena | golem commander | oculus crystal | left-handed casting | silver cocoon threads | distilled salt water |
| Bracken | shadow charmer | sands of sanctity | left-handed casting | silver cocoon threads | distilled salt water |
| Grandpa Stan | shadow charmer | chronometer watch | right-handed casting | black shadow residue | magical milk |
| Coulter | potion brewer | translocator key | right-handed casting | silver cocoon threads | distilled garlic |
| Vanessa | shadow charmer | oculus crystal | right-handed casting | gold fairy dust hair | distilled garlic |
| Grandma Ruth | golem commander | sands of sanctity | left-handed casting | silver cocoon threads | distilled garlic |
| Gavin | shadow charmer | giant slayer sword | left-handed casting | gold fairy dust hair | distilled salt water |
Clue 1
Addition
Kendra counts the glowing fairy cocoons in the garden. She adds the new ones to the old ones to see how many fairies are safe.
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
3106
7249
6595
5135
3998
6651
6304
6112
3991
T
3106
6651
6139
5135
4472
6541
T
3106
7249
6595
9611
5135
3998
6651
3998
6541
5135
6112
2065
6541
T
3106
6139
6651
1804 + 1302 =T
4301 + 2350 =L
1724 + 2274 =U
3391 + 3150 =S
1755 + 2236 =I
2880 + 2255 =C
4519 + 2076 =E
4319 + 5292 =O
2360 + 3779 =A
3024 + 3280 =P
827 + 1238 =Y
1917 + 2555 =K
2689 + 3423 =R
3768 + 3481 =H
0/14 letters found
Clue 2
Subtraction
Seth sneaks into the attic and takes some magical items from the vault. He subtracts the stolen gear from the supply chest.
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
8912
3666
2848
7085
4424
1452
8847
2301
2924
2848
7085
4424
3344
2848
7454
5894
2848
1452
3666
6652
8080
1452
2924
2848
1951
T
8912
3666
2301
7454
3344
2848
3344
5894
2301
1452
T
8912
4424
7454
7651
11352 - 2440 =T
7498 - 3074 =I
11612 - 2765 =U
9777 - 2323 =N
11461 - 3381 =W
8806 - 1155 =G
8171 - 1086 =V
4298 - 954 =D
9862 - 3968 =C
1824 - 372 =S
6094 - 2428 =H
9014 - 2362 =O
5354 - 3403 =F
5026 - 2178 =E
7135 - 4211 =L
2952 - 651 =A
0/16 letters found
Clue 3
Rounding
The magic radar of Fablehaven is blurry today. Grandpa Stan has to round the energy level to the nearest ten to make sure the barriers are working.
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
200
130
4300
1100
3000
700
2300
5000
230
900
2000
700
2300
1700
2000
S
200
700
2000
1300
1300
5000
1700
S
200
1100
1300
700
900
1100
700
5000
4300
Round 213 to the nearest hundredS
Round 1,113 to the nearest hundredA
Round 4,579 to the nearest thousandE
Round 126 to the nearest tenP
Round 4,267 to the nearest hundredR
Round 1,966 to the nearest thousandI
Round 2,341 to the nearest hundredH
Round 744 to the nearest hundredT
Round 1,305 to the nearest hundredL
Round 878 to the nearest hundredW
Round 227 to the nearest tenM
Round 3,007 to the nearest thousandY
Round 1,668 to the nearest hundredD
0/13 letters found
Clue 4
Skip counting
Tanu lines up his healing potions in rows of five. He skip counts by fives to quickly tally up his inventory before the battle.
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
8
27
40
130
28
9
20
15
35
26
55
27
60
16
130
16
130
130
9
6
50
60
27
45
20
15
Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12W
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65V
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150O
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25S
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45I
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15N
Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30D
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50F
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32U
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55A
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60H
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30L
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20C
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
Grandma Ruth has a basket of magical treats. She divides them equally among the friendly satyrs so everyone gets an equal share.
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
22 ÷ 2 = ?
40 ÷ 4 = ?
36 ÷ 4 = ?
30 ÷ 5 = ?
3 ÷ 1 = ?
4 ÷ 4 = ?
36 ÷ 3 = ?
8 ÷ 4 = ?
14 ÷ 2 = ?
45 ÷ 9 = ?
24 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain orders the clay golem to dig, then teleports away with the translocator key.
2.The villain commands the shadows to block our path, then teleports away with the translocator key.
3.The villain binds a rogue demon to a contract, then swings the giant-slayer sword.
4.The villain commands the shadows to block our path, then throws the sands of sanctity.
5.The villain brews a glowing speed potion, then looks through the oculus crystal.
6.The villain whispers to the fairies for help, then swings the giant-slayer sword.
7.The villain orders the clay golem to dig, then swings the giant-slayer sword.
8.The villain brews a glowing speed potion, then rewinds time with the chronometer watch.
9.The villain orders the clay golem to dig, then rewinds time with the chronometer watch.
10.The villain whispers to the fairies for help, then throws the sands of sanctity.
11.The villain whispers to the fairies for help, then teleports away with the translocator key.
12.The villain commands the shadows to block our path, then looks through the oculus crystal.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Fablehaven Intruder
Culprit: Bracken (shadow charmer · sands of sanctity · left-handed casting · silver cocoon threads · distilled salt water)
- Clue 1 (Addition): "THE CULPRIT LACKS THE OCULUS CRYSTAL"1804 + 1302 = 3106 (T) · 4301 + 2350 = 6651 (L) · 1724 + 2274 = 3998 (U) · 3391 + 3150 = 6541 (S) · 1755 + 2236 = 3991 (I) · 2880 + 2255 = 5135 (C) · 4519 + 2076 = 6595 (E) · 4319 + 5292 = 9611 (O) · 2360 + 3779 = 6139 (A) · 3024 + 3280 = 6304 (P) · 827 + 1238 = 2065 (Y) · 1917 + 2555 = 4472 (K) · 2689 + 3423 = 6112 (R) · 3768 + 3481 = 7249 (H)
- Clue 2 (Subtraction): "THE VISUAL EVIDENCE SHOWS LEFT HANDED CASTING"11352 - 2440 = 8912 (T) · 7498 - 3074 = 4424 (I) · 11612 - 2765 = 8847 (U) · 9777 - 2323 = 7454 (N) · 11461 - 3381 = 8080 (W) · 8806 - 1155 = 7651 (G) · 8171 - 1086 = 7085 (V) · 4298 - 954 = 3344 (D) · 9862 - 3968 = 5894 (C) · 1824 - 372 = 1452 (S) · 6094 - 2428 = 3666 (H) · 9014 - 2362 = 6652 (O) · 5354 - 3403 = 1951 (F) · 5026 - 2178 = 2848 (E) · 7135 - 4211 = 2924 (L) · 2952 - 651 = 2301 (A)
- Clue 3 (Rounding): "SPRAY THEM WITH DISTILLED SALT WATER"Round 213 to the nearest hundred = 200 (S) · Round 1,113 to the nearest hundred = 1100 (A) · Round 4,579 to the nearest thousand = 5000 (E) · Round 126 to the nearest ten = 130 (P) · Round 4,267 to the nearest hundred = 4300 (R) · Round 1,966 to the nearest thousand = 2000 (I) · Round 2,341 to the nearest hundred = 2300 (H) · Round 744 to the nearest hundred = 700 (T) · Round 1,305 to the nearest hundred = 1300 (L) · Round 878 to the nearest hundred = 900 (W) · Round 227 to the nearest ten = 230 (M) · Round 3,007 to the nearest thousand = 3000 (Y) · Round 1,668 to the nearest hundred = 1700 (D)
- Clue 4 (Skip counting): "WE FOUND SILVER COCOON THREADS"Skip-count by 2s. Fill the blank: 2, 4, 6, ___, 10, 12 = 8 (W) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (V) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (O) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (S) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (I) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, ___, 25, 30 = 20 (D) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50 = 40 (F) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (U) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (A) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (H) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (L) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70 = 60 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, ___, 18, 20 = 16 (C)
- Clue 5 (Division facts (1-12)): surviving statement (box 4) → Bracken22 ÷ 2 = 11 · 40 ÷ 4 = 10 · 36 ÷ 4 = 9 · 30 ÷ 5 = 6 · 3 ÷ 1 = 3 · 4 ÷ 4 = 1 · 36 ÷ 3 = 12 · 8 ÷ 4 = 2 · 14 ÷ 2 = 7 · 45 ÷ 9 = 5 · 24 ÷ 3 = 8
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Addition, Subtraction, Rounding, Skip counting, Division
- Reading level
- grades 3-4
- Theme
- The Fablehaven Intruder — set in Fablehaven Sanctuary
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects