🔎 HalloweenGrade 3Reading: grades 3-4AdditionSubtractionPlace valueRoundingDivision
The Haunted Harvest Mystery
Someone scrambled the pumpkin patch light grid right before the big Halloween contest! Solve the math clues to uncover the culprit.
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 | Spell Type | Spooky Gadget | Glove Hand | Wig Color | Magic Snack |
|---|---|---|---|---|---|
| Monster Max | Shadow Bolt | Glow Lantern | Left Handed | Midnight Black | Salted Popcorn |
| Gargoyle Gary | Pumpkin Blast | Spider Net | Left Handed | Midnight Black | Salted Popcorn |
| Wizard Wally | Pumpkin Blast | Spider Net | Left Handed | Midnight Black | Sour Worms |
| Mummy Manny | Fog Cloud | Broom Hover | Right Handed | Slime Green | Salted Popcorn |
| Casper Ghost | Fog Cloud | Broom Hover | Right Handed | Slime Green | Candy Corn |
| Sally Skellington | Fog Cloud | Glow Lantern | Left Handed | Midnight Black | Sour Worms |
| Zombie Zack | Ghost Wail | Candy Cannon | Left Handed | Neon Orange | Sour Worms |
| Witch Hazel | Fog Cloud | Bone Whistle | Left Handed | Slime Green | Candy Corn |
| Gomez Addams | Shadow Bolt | Broom Hover | Left Handed | Slime Green | Sour Worms |
| Phantom Pete | Fog Cloud | Bone Whistle | Right Handed | Slime Green | Candy Corn |
| Frankie Stein | Ghost Wail | Glow Lantern | Left Handed | Midnight Black | Sour Worms |
| Wolfgang Moon | Pumpkin Blast | Candy Cannon | Left Handed | Slime Green | Sour Worms |
| Ogre Ollie | Pumpkin Blast | Candy Cannon | Right Handed | Neon Orange | Candy Corn |
| Mavis Dracula | Pumpkin Blast | Bone Whistle | Right Handed | Slime Green | Sour Worms |
| Jack Lantern | Shadow Bolt | Glow Lantern | Left Handed | Neon Orange | Sour Worms |
| Vampire Vic | Pumpkin Blast | Candy Cannon | Left Handed | Neon Orange | Sour Worms |
| Banshee Bella | Ghost Wail | Candy Cannon | Right Handed | Neon Orange | Sour Worms |
| Goblin Gabe | Fog Cloud | Candy Cannon | Left Handed | Slime Green | Sour Worms |
| Count Dracula | Pumpkin Blast | Spider Net | Left Handed | Slime Green | Sour Worms |
| Wednesday Addams | Pumpkin Blast | Spider Net | Left Handed | Midnight Black | Candy Corn |
| Skeleton Sam | Pumpkin Blast | Bone Whistle | Left Handed | Slime Green | Sour Worms |
Clue 1
Addition
Farmer Bob counted the candy bags in two supply carts to unlock the first clue 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
772
707
281
499
808
634
634
627
808
769
793
808
793
769
513
T
772
662
359
281
747
299
513
513
202
707
513
499
281
299
260 + 512 =T
316 + 183 =V
85 + 196 =E
72 + 130 =M
196 + 317 =O
379 + 328 =H
452 + 210 =U
220 + 414 =L
239 + 120 =S
449 + 320 =N
371 + 376 =B
272 + 536 =I
261 + 366 =A
318 + 475 =D
177 + 122 =R
0/15 letters found
Clue 2
Subtraction
We subtracted the smashed pumpkins from the total harvest to read the footprints.
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
883
246
704
186
714
186
355
704
684
T
883
473
789
415
355
355
704
473
827
648
704
378
T
883
246
827
696
473
704
473
723
648
415
569
704
1153 - 270 =T
737 - 53 =C
514 - 136 =F
486 - 240 =H
672 - 24 =L
904 - 335 =V
691 - 276 =O
837 - 114 =G
1015 - 311 =E
691 - 336 =P
749 - 276 =D
1056 - 360 =N
952 - 163 =R
757 - 43 =U
323 - 137 =S
1071 - 244 =A
0/16 letters found
Clue 3
Place value
The secret keypad code relied on finding the digit in the tens place of the gate ticket.
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
8000
80
30
700
5000
9000
9000
70
5000
20
50
70
2000
2000
90
70
300
30
40
60
10
10
900
600
2000
60
3000
300
50
60
300
6000
2000
What is the value of the 8 in 58,210?T
What is the value of the 7 in 740?V
What is the value of the 2 in 723?N
What is the value of the 4 in 6,142?D
What is the value of the 7 in 2,474?A
What is the value of the 8 in 786?H
What is the value of the 5 in 453?W
What is the value of the 3 in 5,939?E
What is the value of the 6 in 2,609?Y
What is the value of the 6 in 6,092?M
What is the value of the 9 in 897?C
What is the value of the 1 in 217?F
What is the value of the 2 in 62,540?S
What is the value of the 9 in 39,457?L
What is the value of the 3 in 357?R
What is the value of the 5 in 5,190?I
What is the value of the 6 in 469?O
What is the value of the 9 in 974?B
What is the value of the 3 in 3,665?U
0/19 letters found
Clue 4
Rounding
The spooky radar display only rounded numbers to the nearest ten to spot the villain.
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
8000
900
500
40
6000
80
300
5000
80
80
3000
2000
40
300
900
90
5000
A
8000
3000
20
2000
A
8000
900
70
700
7000
3000
20
Round 7,632 to the nearest thousandA
Round 2,774 to the nearest thousandN
Round 37 to the nearest tenI
Round 89 to the nearest tenT
Round 1,906 to the nearest thousandW
Round 24 to the nearest tenD
Round 4,927 to the nearest thousandR
Round 6,541 to the nearest thousandU
Round 70 to the nearest tenF
Round 84 to the nearest tenE
Round 547 to the nearest hundredL
Round 667 to the nearest hundredO
Round 5,753 to the nearest thousandM
Round 298 to the nearest hundredG
Round 887 to the nearest hundredS
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
We divided the glow sticks equally into prize buckets to reveal the final message.
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
18 ÷ 6 = ?
80 ÷ 8 = ?
66 ÷ 11 = ?
16 ÷ 4 = ?
15 ÷ 3 = ?
20 ÷ 10 = ?
84 ÷ 12 = ?
144 ÷ 12 = ?
45 ÷ 5 = ?
77 ÷ 7 = ?
4 ÷ 4 = ?
Step 2 — cross out the sentence with each answer
1.The villain summoned a bat swarm, then shined a glow lantern.
2.The villain raised a fog cloud, then threw a spider net.
3.The villain fired a pumpkin blast, then blasted a candy cannon.
4.The villain summoned a bat swarm, then threw a spider net.
5.The villain let out a ghost wail, then blew a bone whistle.
6.The villain raised a fog cloud, then blasted a candy cannon.
7.The villain let out a ghost wail, then threw a spider net.
8.The villain fired a pumpkin blast, then blew a bone whistle.
9.The villain raised a fog cloud, then shined a glow lantern.
10.The villain fired a pumpkin blast, then threw a spider net.
11.The villain cast a shadow bolt, then zipped on a broom hover.
12.The villain fired a pumpkin blast, then zipped on a broom hover.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Haunted Harvest Mystery
Culprit: Skeleton Sam (Pumpkin Blast · Bone Whistle · Left Handed · Slime Green · Sour Worms)
- Clue 1 (Addition): "THE VILLAIN DID NOT USE BROOM HOVER"260 + 512 = 772 (T) · 316 + 183 = 499 (V) · 85 + 196 = 281 (E) · 72 + 130 = 202 (M) · 196 + 317 = 513 (O) · 379 + 328 = 707 (H) · 452 + 210 = 662 (U) · 220 + 414 = 634 (L) · 239 + 120 = 359 (S) · 449 + 320 = 769 (N) · 371 + 376 = 747 (B) · 272 + 536 = 808 (I) · 261 + 366 = 627 (A) · 318 + 475 = 793 (D) · 177 + 122 = 299 (R)
- Clue 2 (Subtraction): "THE SUSPECT DROPPED A LEFT HANDED GLOVE"1153 - 270 = 883 (T) · 737 - 53 = 684 (C) · 514 - 136 = 378 (F) · 486 - 240 = 246 (H) · 672 - 24 = 648 (L) · 904 - 335 = 569 (V) · 691 - 276 = 415 (O) · 837 - 114 = 723 (G) · 1015 - 311 = 704 (E) · 691 - 336 = 355 (P) · 749 - 276 = 473 (D) · 1056 - 360 = 696 (N) · 952 - 163 = 789 (R) · 757 - 43 = 714 (U) · 323 - 137 = 186 (S) · 1071 - 244 = 827 (A)
- Clue 3 (Place value): "THE VILLAIN WAS SCARED OFF BY SOUR WORMS"What is the value of the 8 in 58,210? = 8000 (T) · What is the value of the 7 in 740? = 700 (V) · What is the value of the 2 in 723? = 20 (N) · What is the value of the 4 in 6,142? = 40 (D) · What is the value of the 7 in 2,474? = 70 (A) · What is the value of the 8 in 786? = 80 (H) · What is the value of the 5 in 453? = 50 (W) · What is the value of the 3 in 5,939? = 30 (E) · What is the value of the 6 in 2,609? = 600 (Y) · What is the value of the 6 in 6,092? = 6000 (M) · What is the value of the 9 in 897? = 90 (C) · What is the value of the 1 in 217? = 10 (F) · What is the value of the 2 in 62,540? = 2000 (S) · What is the value of the 9 in 39,457? = 9000 (L) · What is the value of the 3 in 357? = 300 (R) · What is the value of the 5 in 5,190? = 5000 (I) · What is the value of the 6 in 469? = 60 (O) · What is the value of the 9 in 974? = 900 (B) · What is the value of the 3 in 3,665? = 3000 (U)
- Clue 4 (Rounding): "A SLIME GREEN WIG STRAND WAS FOUND"Round 7,632 to the nearest thousand = 8000 (A) · Round 2,774 to the nearest thousand = 3000 (N) · Round 37 to the nearest ten = 40 (I) · Round 89 to the nearest ten = 90 (T) · Round 1,906 to the nearest thousand = 2000 (W) · Round 24 to the nearest ten = 20 (D) · Round 4,927 to the nearest thousand = 5000 (R) · Round 6,541 to the nearest thousand = 7000 (U) · Round 70 to the nearest ten = 70 (F) · Round 84 to the nearest ten = 80 (E) · Round 547 to the nearest hundred = 500 (L) · Round 667 to the nearest hundred = 700 (O) · Round 5,753 to the nearest thousand = 6000 (M) · Round 298 to the nearest hundred = 300 (G) · Round 887 to the nearest hundred = 900 (S)
- Clue 5 (Division facts (1-12)): surviving statement (box 8) → Skeleton Sam18 ÷ 6 = 3 · 80 ÷ 8 = 10 · 66 ÷ 11 = 6 · 16 ÷ 4 = 4 · 15 ÷ 3 = 5 · 20 ÷ 10 = 2 · 84 ÷ 12 = 7 · 144 ÷ 12 = 12 · 45 ÷ 5 = 9 · 77 ÷ 7 = 11 · 4 ÷ 4 = 1
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Addition, Subtraction, Place value, Rounding, Division
- Reading level
- grades 3-4
- Theme
- The Haunted Harvest Mystery — set in Spooksville Pumpkin Patch
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects