🔎 ChristianityGrade 3Reading: grades 3-4Place valueAdditionSubtractionRoundingDivision
The Mystery of the Missing Harp
The historic Jubal Harp has vanished from the vault display cabinet at Hope Abbey Museum! Detective Marcus needs your help working through clues around the grounds to discover who snatched the artifact before evening service starts.
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 | Gear Used | Carried Item | Dominant Hand | Hair Color | Scent Sensitivity |
|---|---|---|---|---|---|
| Daniel | Brass Key | Cedar Box | Left Handed | Bright Red Hair | Bitter Myrrh |
| Deborah | Rope Ladder | Linen Sack | Left Handed | Dusty Silver Hair | Bitter Myrrh |
| Gideon | Silver Horn | Cedar Box | Left Handed | Dark Brown Hair | Fresh Cedar |
| Martha | Silver Horn | Clay Jar | Right Handed | Dark Brown Hair | Strong Frankincense |
| Samson | Lantern Beam | Cedar Box | Right Handed | Dusty Silver Hair | Fresh Cedar |
| Esther | Lantern Beam | Linen Sack | Left Handed | Bright Red Hair | Strong Frankincense |
| Hannah | Rope Ladder | Linen Sack | Right Handed | Dark Brown Hair | Strong Frankincense |
| Phoebe | Lantern Beam | Clay Jar | Right Handed | Bright Red Hair | Strong Frankincense |
| Abigail | Rope Ladder | Olive Oil Flask | Right Handed | Bright Red Hair | Bitter Myrrh |
| Peter | Lantern Beam | Clay Jar | Right Handed | Dark Brown Hair | Strong Frankincense |
| Ruth | Bronze Shield | Olive Oil Flask | Right Handed | Dusty Silver Hair | Bitter Myrrh |
| Aaron | Rope Ladder | Olive Oil Flask | Right Handed | Dark Brown Hair | Fresh Cedar |
| Jonah | Brass Key | Clay Jar | Left Handed | Dusty Silver Hair | Strong Frankincense |
| Elijah | Rope Ladder | Palm Branch | Right Handed | Dark Brown Hair | Strong Frankincense |
| Joanna | Lantern Beam | Linen Sack | Left Handed | Bright Red Hair | Bitter Myrrh |
| Marcus | Lantern Beam | Olive Oil Flask | Right Handed | Dusty Silver Hair | Strong Frankincense |
| Naomi | Rope Ladder | Cedar Box | Right Handed | Dark Brown Hair | Strong Frankincense |
| Isaac | Brass Key | Palm Branch | Right Handed | Bright Red Hair | Strong Frankincense |
| Barnabas | Lantern Beam | Cedar Box | Left Handed | Dusty Silver Hair | Fresh Cedar |
| Lydia | Brass Key | Cedar Box | Left Handed | Dark Brown Hair | Strong Frankincense |
| Timothy | Lantern Beam | Olive Oil Flask | Left Handed | Bright Red Hair | Bitter Myrrh |
Clue 1
Place value
The vault lock screen displays digit dials that show place value amounts to reveal the first note.
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
50
10
700
6000
7000
2000
2000
4000
7000
900
40
5000
700
3000
900
5000
T
50
100
4000
30
30
600
4000
2000
7000
900
700
900
3000
4000
100
1000
What is the value of the 5 in 7,353?T
What is the value of the 3 in 932?R
What is the value of the 6 in 688?Y
What is the value of the 7 in 9,765?E
What is the value of the 1 in 613?H
What is the value of the 4 in 648?D
What is the value of the 2 in 2,904?L
What is the value of the 1 in 71,945?K
What is the value of the 3 in 93,070?S
What is the value of the 9 in 951?N
What is the value of the 4 in 74,800?A
What is the value of the 1 in 165?C
What is the value of the 6 in 6,033?V
What is the value of the 5 in 75,441?O
What is the value of the 7 in 7,009?I
0/15 letters found
Clue 2
Addition
To open the museum library door, the detective tallies up the total number of study scrolls collected today.
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
968
591
316
790
962
790
683
316
487
T
968
704
973
790
496
311
T
968
593
976
736
591
T
968
591
973
496
400
316
400
400 + 568 =T
373 + 310 =P
220 + 267 =C
444 + 532 =I
152 + 344 =N
190 + 126 =E
357 + 236 =R
348 + 388 =G
277 + 314 =H
638 + 324 =U
276 + 124 =D
303 + 487 =S
462 + 511 =A
452 + 252 =W
107 + 204 =O
0/15 letters found
Clue 3
Subtraction
To clear out false leads, the team calculates the difference between total clay lamps and missing ones.
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
627
174
255
T
627
174
558
255
320
523
894
141
894
271
894
718
320
523
295
346
857
T
627
523
295
141
838
320
523
894
141
519
558
141
298
255
141
857
255
999 - 372 =T
899 - 42 =S
568 - 45 =R
1221 - 383 =G
864 - 146 =Y
801 - 243 =I
490 - 219 =W
445 - 147 =C
426 - 106 =F
519 - 173 =M
198 - 24 =H
338 - 83 =E
612 - 317 =O
726 - 207 =K
184 - 43 =N
1062 - 168 =A
0/16 letters found
Clue 4
Rounding
The courtyard step counter only shows rounded numbers when people cross the stone bridge.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
D
20
400
90
400
9000
90
500
6000
400
200
70
7000
50
40
D
20
D
20
600
80
2000
4000
80
7000
5000
40
900
600
500
80
600
90
90
900
400
200
9000
400
40
400
Round 23 to the nearest tenD
Round 3,518 to the nearest thousandB
Round 70 to the nearest tenF
Round 87 to the nearest tenT
Round 927 to the nearest hundredH
Round 81 to the nearest tenR
Round 1,785 to the nearest thousandK
Round 50 to the nearest tenU
Round 548 to the nearest hundredI
Round 382 to the nearest hundredE
Round 5,664 to the nearest thousandV
Round 573 to the nearest hundredA
Round 6,662 to the nearest thousandO
Round 9,395 to the nearest thousandC
Round 5,343 to the nearest thousandW
Round 42 to the nearest tenN
Round 244 to the nearest hundredS
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
To share the evidence fairly, the lead detective splits the clue cards into equal piles for each search group.
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
9 ÷ 9 = ?
24 ÷ 8 = ?
132 ÷ 11 = ?
45 ÷ 9 = ?
16 ÷ 2 = ?
63 ÷ 9 = ?
24 ÷ 12 = ?
8 ÷ 2 = ?
44 ÷ 4 = ?
18 ÷ 2 = ?
72 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain scaled a rope ladder, then grabbed the cedar box.
2.The villain raised a bronze shield, then snatched the clay jar.
3.The villain shined a lantern beam, then snatched the clay jar.
4.The villain unlocked with a brass key, then snatched the clay jar.
5.The villain raised a bronze shield, then took the olive oil flask.
6.The villain raised a bronze shield, then swiped the palm branch.
7.The villain shined a lantern beam, then grabbed the cedar box.
8.The villain scaled a rope ladder, then took the olive oil flask.
9.The villain shined a lantern beam, then took the olive oil flask.
10.The villain sounded a silver horn, then snatched the clay jar.
11.The villain sounded a silver horn, then swiped the palm branch.
12.The villain scaled a rope ladder, then swiped the palm branch.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Missing Harp
Culprit: Martha (Silver Horn · Clay Jar · Right Handed · Dark Brown Hair · Strong Frankincense)
- Clue 1 (Place value): "THE VILLAIN DOES NOT CARRY A LINEN SACK"What is the value of the 5 in 7,353? = 50 (T) · What is the value of the 3 in 932? = 30 (R) · What is the value of the 6 in 688? = 600 (Y) · What is the value of the 7 in 9,765? = 700 (E) · What is the value of the 1 in 613? = 10 (H) · What is the value of the 4 in 648? = 40 (D) · What is the value of the 2 in 2,904? = 2000 (L) · What is the value of the 1 in 71,945? = 1000 (K) · What is the value of the 3 in 93,070? = 3000 (S) · What is the value of the 9 in 951? = 900 (N) · What is the value of the 4 in 74,800? = 4000 (A) · What is the value of the 1 in 165? = 100 (C) · What is the value of the 6 in 6,033? = 6000 (V) · What is the value of the 5 in 75,441? = 5000 (O) · What is the value of the 7 in 7,009? = 7000 (I)
- Clue 2 (Addition): "THE SUSPECT WAS NOT RIGHT HANDED"400 + 568 = 968 (T) · 373 + 310 = 683 (P) · 220 + 267 = 487 (C) · 444 + 532 = 976 (I) · 152 + 344 = 496 (N) · 190 + 126 = 316 (E) · 357 + 236 = 593 (R) · 348 + 388 = 736 (G) · 277 + 314 = 591 (H) · 638 + 324 = 962 (U) · 276 + 124 = 400 (D) · 303 + 487 = 790 (S) · 462 + 511 = 973 (A) · 452 + 252 = 704 (W) · 107 + 204 = 311 (O)
- Clue 3 (Subtraction): "THE THIEF RAN AWAY FROM STRONG FRANKINCENSE"999 - 372 = 627 (T) · 899 - 42 = 857 (S) · 568 - 45 = 523 (R) · 1221 - 383 = 838 (G) · 864 - 146 = 718 (Y) · 801 - 243 = 558 (I) · 490 - 219 = 271 (W) · 445 - 147 = 298 (C) · 426 - 106 = 320 (F) · 519 - 173 = 346 (M) · 198 - 24 = 174 (H) · 338 - 83 = 255 (E) · 612 - 317 = 295 (O) · 726 - 207 = 519 (K) · 184 - 43 = 141 (N) · 1062 - 168 = 894 (A)
- Clue 4 (Rounding): "DETECTIVES FOUND DARK BROWN HAIR AT THE SCENE"Round 23 to the nearest ten = 20 (D) · Round 3,518 to the nearest thousand = 4000 (B) · Round 70 to the nearest ten = 70 (F) · Round 87 to the nearest ten = 90 (T) · Round 927 to the nearest hundred = 900 (H) · Round 81 to the nearest ten = 80 (R) · Round 1,785 to the nearest thousand = 2000 (K) · Round 50 to the nearest ten = 50 (U) · Round 548 to the nearest hundred = 500 (I) · Round 382 to the nearest hundred = 400 (E) · Round 5,664 to the nearest thousand = 6000 (V) · Round 573 to the nearest hundred = 600 (A) · Round 6,662 to the nearest thousand = 7000 (O) · Round 9,395 to the nearest thousand = 9000 (C) · Round 5,343 to the nearest thousand = 5000 (W) · Round 42 to the nearest ten = 40 (N) · Round 244 to the nearest hundred = 200 (S)
- Clue 5 (Division facts (1-12)): surviving statement (box 10) → Martha9 ÷ 9 = 1 · 24 ÷ 8 = 3 · 132 ÷ 11 = 12 · 45 ÷ 9 = 5 · 16 ÷ 2 = 8 · 63 ÷ 9 = 7 · 24 ÷ 12 = 2 · 8 ÷ 2 = 4 · 44 ÷ 4 = 11 · 18 ÷ 2 = 9 · 72 ÷ 12 = 6
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Place value, Addition, Subtraction, Rounding, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of the Missing Harp — set in Hope Abbey Museum
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects