🔎 HalloweenGrade 4Reading: grades 3-4MultiplicationRoundingAdditionSubtractionDivision

The Halloween Festival Mystery

Someone replaced all the prize candy with fake foam blocks at the Halloween festival! Detective, examine the clues and stop the prankster before midnight.

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	Spooky Gadget	Costume Suit	Wand Hand	Wig Color	Trick Banisher
Spooky Sam	Pumpkin Launcher	Bat Wings	Left Handed	Purple Hair	Garlic Spray
Witchy Wendy	Pumpkin Launcher	Skeleton Suit	Left Handed	Green Hair	Party Horn
Skeleton Sue	Slime Sprayer	Skeleton Suit	Right Handed	Orange Hair	Flashlight Beam
Ghostly Grace	Pumpkin Launcher	Shadow Shroud	Left Handed	Purple Hair	Flashlight Beam
Creepy Clara	Fog Machine	Glow Cloak	Right Handed	Purple Hair	Party Horn
Bony Bob	Pumpkin Launcher	Mummy Wrap	Left Handed	Green Hair	Flashlight Beam
Vampire Vinnie	Slime Sprayer	Skeleton Suit	Right Handed	Green Hair	Party Horn
Zombie Zack	Fog Machine	Skeleton Suit	Left Handed	Green Hair	Flashlight Beam
Jack Lantern	Slime Sprayer	Glow Cloak	Left Handed	Orange Hair	Garlic Spray
Cobweb Carl	Fog Machine	Glow Cloak	Right Handed	Orange Hair	Party Horn
Specter Tim	Web Cannon	Glow Cloak	Right Handed	Orange Hair	Party Horn
Eerie Emma	Fog Machine	Glow Cloak	Right Handed	Green Hair	Garlic Spray
Goblin Greg	Web Cannon	Glow Cloak	Left Handed	Orange Hair	Party Horn
Mummy Mark	Web Cannon	Skeleton Suit	Left Handed	Purple Hair	Party Horn
Frankie Stein	Pumpkin Launcher	Bat Wings	Left Handed	Purple Hair	Party Horn
Broomstick Bella	Bat Blaster	Glow Cloak	Left Handed	Green Hair	Garlic Spray
Phantom Pete	Pumpkin Launcher	Mummy Wrap	Left Handed	Purple Hair	Party Horn
Monster Molly	Web Cannon	Mummy Wrap	Left Handed	Purple Hair	Party Horn
Haunted Harry	Bat Blaster	Glow Cloak	Left Handed	Purple Hair	Party Horn
Howling Hank	Slime Sprayer	Mummy Wrap	Left Handed	Green Hair	Garlic Spray
Count Vlad	Bat Blaster	Bat Wings	Left Handed	Purple Hair	Party Horn

Clue 1

Multiplication facts (1-12)

You find rows of pumpkin crates neatly stacked near the stage.

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

110

1 × 1 =T

11 × 10 =A

7 × 7 =O

2 × 1 =D

5 × 3 =U

7 × 2 =M

3 × 9 =S

11 × 7 =V

2 × 11 =Y

6 × 5 =P

8 × 11 =E

5 × 11 =L

11 × 4 =R

6 × 2 =W

7 × 12 =I

12 × 4 =N

1 × 11 =H

0/17 letters found

Clue 2

Rounding

The haunted radar screen blinks with an estimated glow 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.

430

900

200

2000

2300

500

430

900

1100

2300

1300

9000

430

2000

7000

500

2300

9000

5000

500

2300

1100

2300

200

9000

1700

2300

110

1100

430

2000

3000

Round 429 to the nearest tenA

Round 537 to the nearest hundredS

Round 897 to the nearest hundredW

Round 1,079 to the nearest hundredH

Round 1,535 to the nearest thousandN

Round 2,757 to the nearest thousandD

Round 19 to the nearest tenT

Round 5,156 to the nearest thousandU

Round 9,308 to the nearest thousandR

Round 1,307 to the nearest hundredP

Round 192 to the nearest hundredI

Round 111 to the nearest tenF

Round 1,673 to the nearest hundredL

Round 2,289 to the nearest hundredE

Round 7,456 to the nearest thousandK

0/15 letters found

Clue 3

Addition

You gather all the spilled party favors into one big pile.

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

7164

5912

5230

2036

5275

2043

6073

5275

8854

9080

6073

8023

3463

6073

4585

5230

4872

5197

9362

6073

2043

4803

4828

4872

4523

6073

4585

7164

9362

5912

4803

4585

8854

4465 + 2699 =T

3071 + 2159 =E

3160 + 2913 =A

5398 + 3682 =W

1440 + 3083 =P

1647 + 3628 =I

2117 + 2468 =R

2195 + 2677 =D

2337 + 3575 =H

2542 + 2286 =U

2841 + 1962 =O

814 + 1229 =L

2135 + 1328 =C

4957 + 4405 =Y

940 + 1096 =V

2918 + 5105 =S

1846 + 3351 =B

3182 + 5672 =N

0/18 letters found

Clue 4

Subtraction

You compare the missing glowing bats to the total in the storehouse.

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

7904

8714

4984

8714

8390

4984

4610

8209

8714

6382

1848

8450

4945

1541

7904

2516

4945

3131

2516

5639

8714

6862

2517

4610

3131

2517

4984

6862

8714

6382

8390

8714

1541

8714

8385 - 481 =D

9323 - 873 =O

5207 - 2076 =R

8633 - 243 =C

10189 - 4550 =L

9217 - 4233 =T

8702 - 493 =V

5354 - 3506 =F

5941 - 3424 =A

4786 - 2270 =P

11138 - 4756 =S

8756 - 4146 =I

11947 - 3233 =E

6387 - 4846 =N

7104 - 242 =H

8034 - 3089 =U

0/16 letters found

Clue 5

Division facts (1-12) — the last clue

You split the collected monster badges equally among the squad.

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

16 ÷ 8 = ?

15 ÷ 3 = ?

27 ÷ 9 = ?

70 ÷ 10 = ?

9 ÷ 9 = ?

90 ÷ 9 = ?

24 ÷ 6 = ?

81 ÷ 9 = ?

108 ÷ 9 = ?

44 ÷ 4 = ?

80 ÷ 10 = ?

Step 2 — cross out the sentence with each answer

1.The villain blasted the slime sprayer, then flapped their bat wings.

2.The villain launched the bat blaster, then flapped their bat wings.

3.The villain launched the bat blaster, then adjusted their glow cloak.

4.The villain cranked the fog machine, then vanished in a shadow shroud.

5.The villain fired the pumpkin launcher, then flapped their bat wings.

6.The villain shot the web cannon, then zipped up their skeleton suit.

7.The villain shot the web cannon, then flapped their bat wings.

8.The villain blasted the slime sprayer, then vanished in a shadow shroud.

9.The villain launched the bat blaster, then vanished in a shadow shroud.

10.The villain cranked the fog machine, then zipped up their skeleton suit.

11.The villain cranked the fog machine, then wrapped up in their mummy wrap.

12.The villain fired the pumpkin launcher, then adjusted their glow cloak.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Halloween Festival Mystery

Culprit: Mummy Mark (Web Cannon · Skeleton Suit · Left Handed · Purple Hair · Party Horn)

Clue 1 (Multiplication facts (1-12)): "THE VILLAIN DOES NOT WEAR A MUMMY WRAP"
1 × 1 = 1 (T) · 11 × 10 = 110 (A) · 7 × 7 = 49 (O) · 2 × 1 = 2 (D) · 5 × 3 = 15 (U) · 7 × 2 = 14 (M) · 3 × 9 = 27 (S) · 11 × 7 = 77 (V) · 2 × 11 = 22 (Y) · 6 × 5 = 30 (P) · 8 × 11 = 88 (E) · 5 × 11 = 55 (L) · 11 × 4 = 44 (R) · 6 × 2 = 12 (W) · 7 × 12 = 84 (I) · 12 × 4 = 48 (N) · 1 × 11 = 11 (H)
Clue 2 (Rounding): "A WITNESS SAW THE PRANKSTER USE THEIR LEFT HAND"
Round 429 to the nearest ten = 430 (A) · Round 537 to the nearest hundred = 500 (S) · Round 897 to the nearest hundred = 900 (W) · Round 1,079 to the nearest hundred = 1100 (H) · Round 1,535 to the nearest thousand = 2000 (N) · Round 2,757 to the nearest thousand = 3000 (D) · Round 19 to the nearest ten = 20 (T) · Round 5,156 to the nearest thousand = 5000 (U) · Round 9,308 to the nearest thousand = 9000 (R) · Round 1,307 to the nearest hundred = 1300 (P) · Round 192 to the nearest hundred = 200 (I) · Round 111 to the nearest ten = 110 (F) · Round 1,673 to the nearest hundred = 1700 (L) · Round 2,289 to the nearest hundred = 2300 (E) · Round 7,456 to the nearest thousand = 7000 (K)
Clue 3 (Addition): "THE VILLAIN WAS SCARED BY A LOUD PARTY HORN"
4465 + 2699 = 7164 (T) · 3071 + 2159 = 5230 (E) · 3160 + 2913 = 6073 (A) · 5398 + 3682 = 9080 (W) · 1440 + 3083 = 4523 (P) · 1647 + 3628 = 5275 (I) · 2117 + 2468 = 4585 (R) · 2195 + 2677 = 4872 (D) · 2337 + 3575 = 5912 (H) · 2542 + 2286 = 4828 (U) · 2841 + 1962 = 4803 (O) · 814 + 1229 = 2043 (L) · 2135 + 1328 = 3463 (C) · 4957 + 4405 = 9362 (Y) · 940 + 1096 = 2036 (V) · 2918 + 5105 = 8023 (S) · 1846 + 3351 = 5197 (B) · 3182 + 5672 = 8854 (N)
Clue 4 (Subtraction): "DETECTIVES FOUND PURPLE HAIR AT THE SCENE"
8385 - 481 = 7904 (D) · 9323 - 873 = 8450 (O) · 5207 - 2076 = 3131 (R) · 8633 - 243 = 8390 (C) · 10189 - 4550 = 5639 (L) · 9217 - 4233 = 4984 (T) · 8702 - 493 = 8209 (V) · 5354 - 3506 = 1848 (F) · 5941 - 3424 = 2517 (A) · 4786 - 2270 = 2516 (P) · 11138 - 4756 = 6382 (S) · 8756 - 4146 = 4610 (I) · 11947 - 3233 = 8714 (E) · 6387 - 4846 = 1541 (N) · 7104 - 242 = 6862 (H) · 8034 - 3089 = 4945 (U)
Clue 5 (Division facts (1-12)): surviving statement (box 6) → Mummy Mark
16 ÷ 8 = 2 · 15 ÷ 3 = 5 · 27 ÷ 9 = 3 · 70 ÷ 10 = 7 · 9 ÷ 9 = 1 · 90 ÷ 9 = 10 · 24 ÷ 6 = 4 · 81 ÷ 9 = 9 · 108 ÷ 9 = 12 · 44 ÷ 4 = 11 · 80 ÷ 10 = 8

About this mystery

Grade level: Grade 4 math
Math topics: Multiplication, Rounding, Addition, Subtraction, Division
Reading level: grades 3-4
Theme: The Halloween Festival Mystery — set in Pumpkin Hollow Manor
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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