Grade 3Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
Mystery of the Hidden Jungle Idol
The golden Monkey Idol has been swiped from the campsite! A Rival Raider slipped past our tents under the cover of night. Only a true junior explorer can follow the tracks, solve the clues, and retrieve the treasure before the boat leaves!
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 | Signature Tool | Secret Gadget | Stepping Foot | Explorer Hat | Silly Fear |
|---|---|---|---|---|---|
| Toby | grappling hook | night-vision goggles | right-foot lead | safari helmet | tiny spiders |
| Eli | climbing pick | walkie-talkies | left-foot lead | safari helmet | tickling ferns |
| Gabe | metal detector | walkie-talkies | left-foot lead | wool beanie | tickling ferns |
| Eva | golden lasso | pocket drone | left-foot lead | red cap | tiny spiders |
| Lara | golden lasso | smoke bombs | left-foot lead | wool beanie | tiny spiders |
| Maya | climbing pick | smoke bombs | right-foot lead | wool beanie | squeaky frogs |
| Jill | climbing pick | pocket drone | left-foot lead | safari helmet | tiny spiders |
| Jack | climbing pick | night-vision goggles | right-foot lead | red cap | squeaky frogs |
| Leo | metal detector | walkie-talkies | left-foot lead | safari helmet | tiny spiders |
| Ruby | golden lasso | night-vision goggles | left-foot lead | red cap | squeaky frogs |
| Abby | spy glass | smoke bombs | left-foot lead | safari helmet | tiny spiders |
| Zoe | golden lasso | smoke bombs | right-foot lead | wool beanie | squeaky frogs |
| Sienna | climbing pick | smoke bombs | left-foot lead | safari helmet | tiny spiders |
| Amy | climbing pick | night-vision goggles | left-foot lead | red cap | tickling ferns |
| Jake | climbing pick | walkie-talkies | left-foot lead | safari helmet | squeaky frogs |
| Indy | metal detector | walkie-talkies | left-foot lead | safari helmet | squeaky frogs |
| Sam | golden lasso | mini-shovel | left-foot lead | red cap | squeaky frogs |
| Rex | golden lasso | mini-shovel | right-foot lead | wool beanie | tiny spiders |
| Max | golden lasso | smoke bombs | left-foot lead | safari helmet | tiny spiders |
| Ben | metal detector | smoke bombs | right-foot lead | red cap | squeaky frogs |
| Mia | grappling hook | mini-shovel | left-foot lead | wool beanie | tiny spiders |
Clue 1
Rounding
Our island radar only shows rounded numbers for distances. To find the rival camp, we need to round these numbers to the nearest ten.
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
4000
50
5000
700
90
20
20
6000
90
70
7000
80
5000
200
70
80
T
4000
9000
200
5000
T
4000
50
5000
40
80
500
2000
5000
T
4000
7000
400
80
70
5000
Round 3,596 to the nearest thousandT
Round 77 to the nearest tenO
Round 20 to the nearest tenL
Round 40 to the nearest tenP
Round 474 to the nearest hundredC
Round 697 to the nearest hundredV
Round 9,018 to the nearest thousandU
Round 74 to the nearest tenN
Round 89 to the nearest tenI
Round 7,133 to the nearest thousandD
Round 448 to the nearest hundredR
Round 5,623 to the nearest thousandA
Round 230 to the nearest hundredS
Round 48 to the nearest tenH
Round 1,976 to the nearest thousandK
Round 5,056 to the nearest thousandE
0/16 letters found
Clue 2
Addition
The team gathered extra flashlights and compasses for the dark cave. Let us add up all our gear to make sure we are ready.
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
961
488
773
T
961
320
297
799
333
788
788
488
753
591
297
488
773
297
875
252
446
773
204
T
961
204
753
753
T
961
788
T
961
773
336
377 + 584 =T
112 + 92 =F
445 + 343 =S
380 + 393 =E
180 + 117 =A
180 + 411 =W
118 + 134 =Y
518 + 235 =O
164 + 169 =K
502 + 297 =C
139 + 197 =P
163 + 325 =H
429 + 446 =V
103 + 217 =R
237 + 209 =L
0/15 letters found
Clue 3
Subtraction
We had a big jar of insect spray, but some of it leaked out in the mud. Subtract the lost spray to see what is left.
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
457
773
388
101
766
395
320
388
101
101
766
136
766
849
766
662
631
101
503
549
T
457
395
136
662
238
842
395
320
388
101
238
670 - 213 =T
1160 - 394 =A
993 - 220 =H
369 - 131 =S
802 - 253 =M
644 - 13 =F
531 - 395 =N
946 - 284 =Y
637 - 242 =I
748 - 245 =O
1061 - 219 =P
1031 - 182 =W
577 - 257 =D
408 - 307 =R
570 - 182 =E
0/15 letters found
Clue 4
Multiplication facts (1-12)
The ancient temple floor is made of rows of decorated stone tiles. Multiply the rows by the columns to count them all.
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
44
35
84
54
32
50
40
27
5
27
84
27
8
144
5
55
8
27
28
54
50
55
12
35
72
8
54
32
50
40
11 × 4 =W
5 × 7 =E
8 × 4 =U
1 × 8 =R
8 × 9 =G
5 × 10 =N
5 × 1 =S
9 × 6 =O
7 × 4 =P
2 × 6 =H
3 × 9 =A
5 × 8 =D
11 × 5 =T
7 × 12 =F
12 × 12 =I
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
We found a pile of shiny jungle bananas and want to share them equally. Divide the bananas among our team of explorers.
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
72 ÷ 12 = ?
9 ÷ 3 = ?
24 ÷ 2 = ?
35 ÷ 5 = ?
30 ÷ 3 = ?
60 ÷ 12 = ?
11 ÷ 11 = ?
11 ÷ 1 = ?
8 ÷ 2 = ?
32 ÷ 4 = ?
12 ÷ 6 = ?
Step 2 — cross out the sentence with each answer
1.The villain spotted the secret doorway with a spy glass, then escaped into the dark wearing night-vision goggles.
2.The villain scaled the ancient temple wall with a grappling hook, then escaped into the dark wearing night-vision goggles.
3.The villain swung across the canyon using a golden lasso, then vanished in a cloud of fizzing smoke bombs.
4.The villain searched the sandy floor using a metal detector, then guided a sneaky pocket drone to carry the map away.
5.The villain scaled the ancient temple wall with a grappling hook, then vanished in a cloud of fizzing smoke bombs.
6.The villain chipped away the stone lock with a climbing pick, then vanished in a cloud of fizzing smoke bombs.
7.The villain swung across the canyon using a golden lasso, then dug up the golden idol using a mini-shovel.
8.The villain spotted the secret doorway with a spy glass, then dug up the golden idol using a mini-shovel.
9.The villain searched the sandy floor using a metal detector, then chatted with a secret partner over walkie-talkies.
10.The villain scaled the ancient temple wall with a grappling hook, then chatted with a secret partner over walkie-talkies.
11.The villain searched the sandy floor using a metal detector, then vanished in a cloud of fizzing smoke bombs.
12.The villain spotted the secret doorway with a spy glass, then vanished in a cloud of fizzing smoke bombs.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — Mystery of the Hidden Jungle Idol
Culprit: Leo (metal detector · walkie-talkies · left-foot lead · safari helmet · tiny spiders)
- Clue 1 (Rounding): "THE VILLAIN DOES NOT USE THE POCKET DRONE"Round 3,596 to the nearest thousand = 4000 (T) · Round 77 to the nearest ten = 80 (O) · Round 20 to the nearest ten = 20 (L) · Round 40 to the nearest ten = 40 (P) · Round 474 to the nearest hundred = 500 (C) · Round 697 to the nearest hundred = 700 (V) · Round 9,018 to the nearest thousand = 9000 (U) · Round 74 to the nearest ten = 70 (N) · Round 89 to the nearest ten = 90 (I) · Round 7,133 to the nearest thousand = 7000 (D) · Round 448 to the nearest hundred = 400 (R) · Round 5,623 to the nearest thousand = 6000 (A) · Round 230 to the nearest hundred = 200 (S) · Round 48 to the nearest ten = 50 (H) · Round 1,976 to the nearest thousand = 2000 (K) · Round 5,056 to the nearest thousand = 5000 (E)
- Clue 2 (Addition): "THE TRACKS SHOW A HEAVY LEFT FOOT STEP"377 + 584 = 961 (T) · 112 + 92 = 204 (F) · 445 + 343 = 788 (S) · 380 + 393 = 773 (E) · 180 + 117 = 297 (A) · 180 + 411 = 591 (W) · 118 + 134 = 252 (Y) · 518 + 235 = 753 (O) · 164 + 169 = 333 (K) · 502 + 297 = 799 (C) · 139 + 197 = 336 (P) · 163 + 325 = 488 (H) · 429 + 446 = 875 (V) · 103 + 217 = 320 (R) · 237 + 209 = 446 (L)
- Clue 3 (Subtraction): "THE RAIDER RAN AWAY FROM TINY SPIDERS"670 - 213 = 457 (T) · 1160 - 394 = 766 (A) · 993 - 220 = 773 (H) · 369 - 131 = 238 (S) · 802 - 253 = 549 (M) · 644 - 13 = 631 (F) · 531 - 395 = 136 (N) · 946 - 284 = 662 (Y) · 637 - 242 = 395 (I) · 748 - 245 = 503 (O) · 1061 - 219 = 842 (P) · 1031 - 182 = 849 (W) · 577 - 257 = 320 (D) · 408 - 307 = 101 (R) · 570 - 182 = 388 (E)
- Clue 4 (Multiplication facts (1-12)): "WE FOUND A SAFARI STRAP ON THE GROUND"11 × 4 = 44 (W) · 5 × 7 = 35 (E) · 8 × 4 = 32 (U) · 1 × 8 = 8 (R) · 8 × 9 = 72 (G) · 5 × 10 = 50 (N) · 5 × 1 = 5 (S) · 9 × 6 = 54 (O) · 7 × 4 = 28 (P) · 2 × 6 = 12 (H) · 3 × 9 = 27 (A) · 5 × 8 = 40 (D) · 11 × 5 = 55 (T) · 7 × 12 = 84 (F) · 12 × 12 = 144 (I)
- Clue 5 (Division facts (1-12)): surviving statement (box 9) → Leo72 ÷ 12 = 6 · 9 ÷ 3 = 3 · 24 ÷ 2 = 12 · 35 ÷ 5 = 7 · 30 ÷ 3 = 10 · 60 ÷ 12 = 5 · 11 ÷ 11 = 1 · 11 ÷ 1 = 11 · 8 ÷ 2 = 4 · 32 ÷ 4 = 8 · 12 ÷ 6 = 2
About this mystery
- Grade level
- Grade 3 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- Mystery of the Hidden Jungle Idol — set in The Lost Temple of Monkey Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects