Grade 5Reading: grades 5-6SubtractionWord problemsMultiplicationAdditionDivision
The Lost Emerald of Mapogo
Someone slipped into the camp during the heavy tropical rainstorm and snatched the Golden Jaguar Compass! Chief Archaeologist Dr. Sterling is devastated. The perpetrator left a trail of muddy tracks and gear behind. We must search the jungle camp, crack the codes left on the supply crates, and deduce which explorer is the thief before they flee the valley!
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 | Primary Tool | Secret Map | Sling Strap | Explorer Hat | Phobia |
|---|---|---|---|---|---|
| Sally Ride | Torch Flashlight | Cavern Network Map | Right Shoulder Strap | Yellow Cap | Scared of Bats |
| Bear Grylls | Machete | Temple Chambers Map | Right Shoulder Strap | Green Helmet | Scared of Spiders |
| Sacagawea | Laser Level | Swamp Trails Map | Left Shoulder Strap | Yellow Cap | Scared of Spiders |
| Percy Fawcett | Laser Level | Cavern Network Map | Left Shoulder Strap | Brown Fedora | Scared of Bats |
| Nellie Bly | Machete | Canyon Shortcut Map | Left Shoulder Strap | Yellow Cap | Scared of Bats |
| Matthew Henson | Machete | Cavern Network Map | Right Shoulder Strap | Yellow Cap | Scared of Bats |
| Ernest Shackleton | Grappling Hook | Temple Chambers Map | Right Shoulder Strap | Yellow Cap | Scared of Bats |
| Mary Kingsley | Machete | River Route Map | Right Shoulder Strap | Green Helmet | Scared of Spiders |
| Richard Burton | Decibel Sensor | Swamp Trails Map | Left Shoulder Strap | Green Helmet | Scared of Spiders |
| Amelia Earhart | Laser Level | River Route Map | Right Shoulder Strap | Yellow Cap | Scared of Spiders |
| Gertrude Bell | Torch Flashlight | Swamp Trails Map | Right Shoulder Strap | Yellow Cap | Scared of Spiders |
| Isabella Bird | Grappling Hook | Canyon Shortcut Map | Right Shoulder Strap | Green Helmet | Scared of Bats |
| Robert Peary | Machete | River Route Map | Left Shoulder Strap | Green Helmet | Scared of Spiders |
| Roald Amundsen | Torch Flashlight | Swamp Trails Map | Right Shoulder Strap | Yellow Cap | Scared of Heights |
| Indy Jones | Laser Level | Canyon Shortcut Map | Right Shoulder Strap | Green Helmet | Scared of Spiders |
| Jacques Cousteau | Torch Flashlight | Cavern Network Map | Right Shoulder Strap | Green Helmet | Scared of Spiders |
| Lara Croft | Decibel Sensor | Canyon Shortcut Map | Right Shoulder Strap | Green Helmet | Scared of Spiders |
| Daniel Boone | Torch Flashlight | Cavern Network Map | Left Shoulder Strap | Yellow Cap | Scared of Bats |
| Steve Irwin | Machete | Cavern Network Map | Left Shoulder Strap | Green Helmet | Scared of Heights |
| Marco Polo | Laser Level | River Route Map | Right Shoulder Strap | Green Helmet | Scared of Bats |
| Lewis Clark | Grappling Hook | River Route Map | Right Shoulder Strap | Brown Fedora | Scared of Bats |
Clue 1
Subtraction
To figure out which secret maps the suspects carried, we must solve the word problems left in the expedition logbook.
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
4773
6673
6388
4225
3250
4225
3657
6388
4255
T
4773
1947
3941
4255
1546
4225
T
4773
6673
6388
T
4773
6388
4762
3657
1947
6388
4255
6673
3941
4762
3801
6388
6383
4225
4762
3941
3657
5890 - 1117 =T
6401 - 1639 =M
4963 - 738 =S
4768 - 2821 =L
4836 - 1586 =U
8127 - 1454 =H
2370 - 824 =K
7370 - 3429 =A
9559 - 3171 =E
10837 - 4454 =R
6901 - 3100 =B
8000 - 4343 =P
6119 - 1864 =C
0/13 letters found
Clue 2
Word problems
We noticed a difference in the supply crates! Subtracting the stolen rations tells us which side the thief wore their shoulder strap.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
R
93
77
67
80
41
99
80
48
U
L
D
E
R
93
99
41
R
93
A
P
Dr. Sterling found 54 artifact yesterday and 39 more today. How many artifact in all?R
There were 77 canteen. 36 were used up. How many canteen are left?T
There were 107 artifact. 30 were used up. How many artifact are left?I
There were 128 artifact. 29 were used up. How many artifact are left?S
There were 71 compass. 23 were used up. How many compass are left?O
Dr. Sterling lined up 8 rows of 10 notebook. How many notebook in all?H
There were 74 notebook. 7 were used up. How many notebook are left?G
0/7 letters found
Clue 3
Multiplication facts (1-12)
The traps in the chamber trigger in multiple rows. Multiplying the tiles reveals the phobia that made the suspect run.
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
14
21
72
44
22
44
63
72
20
T
14
8
90
11
28
8
121
18
20
121
9
4
72
9
44
144
11
T
14
21
72
8
22
144
11
44
2 × 7 =T
4 × 7 =F
9 × 1 =B
6 × 3 =M
12 × 12 =I
11 × 11 =O
7 × 3 =H
12 × 6 =E
2 × 2 =W
4 × 11 =S
10 × 2 =C
2 × 11 =U
7 × 9 =P
9 × 10 =A
1 × 8 =R
11 × 1 =N
0/16 letters found
Clue 4
Addition
Adding up the footprints found in the mud patches helps us calculate the exact color of the hat left behind.
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
2547
9596
5576
5747
A
2547
8020
4329
9302
2484
5747
2195
2195
6018
8020
8354
A
2547
9596
2779
8460
5576
5987
A
2547
9596
8354
2195
9302
2779
7743
2195
7274
8460
6018
2051
1611 + 936 =A
3001 + 4742 =B
6378 + 3218 =S
4469 + 3885 =L
1677 + 2652 =O
4672 + 3348 =P
3408 + 2168 =C
1079 + 1116 =E
3209 + 4065 =H
2857 + 3130 =W
3300 + 2718 =N
6484 + 2818 =F
999 + 1485 =G
3008 + 2739 =R
3257 + 5203 =I
880 + 1899 =T
1087 + 964 =D
0/17 letters found
Clue 5
Division facts (1-12) — the last clue
We must divide the remaining expedition fuel evenly to trace the final escape route of the suspect.
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
3 ÷ 1 = ?
9 ÷ 9 = ?
77 ÷ 7 = ?
20 ÷ 5 = ?
45 ÷ 9 = ?
50 ÷ 5 = ?
18 ÷ 2 = ?
108 ÷ 9 = ?
42 ÷ 7 = ?
84 ÷ 12 = ?
80 ÷ 10 = ?
Step 2 — cross out the sentence with each answer
1.The villain hacked through the thick brambles, then followed the winding river pathway.
2.The villain shined a beam to align the ancient mirrors, then climbed over the steep canyon walls.
3.The villain measured the sound of the stone traps, then climbed over the steep canyon walls.
4.The villain lit up the dark cavern tunnel, then slipped inside the hidden temple tombs.
5.The villain measured the sound of the stone traps, then followed the winding river pathway.
6.The villain lit up the dark cavern tunnel, then navigated the muddy swamp paths.
7.The villain hacked through the thick brambles, then slipped inside the hidden temple tombs.
8.The villain swung across the crocodile river, then crawled through the wet cavern tunnels.
9.The villain lit up the dark cavern tunnel, then followed the winding river pathway.
10.The villain hacked through the thick brambles, then crawled through the wet cavern tunnels.
11.The villain lit up the dark cavern tunnel, then crawled through the wet cavern tunnels.
12.The villain swung across the crocodile river, then climbed over the steep canyon walls.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Lost Emerald of Mapogo
Culprit: Indy Jones (Laser Level · Canyon Shortcut Map · Right Shoulder Strap · Green Helmet · Scared of Spiders)
- Clue 1 (Subtraction): "THE SUSPECT LACKS THE TEMPLE CHAMBERS MAP"5890 - 1117 = 4773 (T) · 6401 - 1639 = 4762 (M) · 4963 - 738 = 4225 (S) · 4768 - 2821 = 1947 (L) · 4836 - 1586 = 3250 (U) · 8127 - 1454 = 6673 (H) · 2370 - 824 = 1546 (K) · 7370 - 3429 = 3941 (A) · 9559 - 3171 = 6388 (E) · 10837 - 4454 = 6383 (R) · 6901 - 3100 = 3801 (B) · 8000 - 4343 = 3657 (P) · 6119 - 1864 = 4255 (C)
- Clue 2 (Word problems): "RIGHT SHOULDER STRAP"Dr. Sterling found 54 artifact yesterday and 39 more today. How many artifact in all? = 93 (R) · There were 77 canteen. 36 were used up. How many canteen are left? = 41 (T) · There were 107 artifact. 30 were used up. How many artifact are left? = 77 (I) · There were 128 artifact. 29 were used up. How many artifact are left? = 99 (S) · There were 71 compass. 23 were used up. How many compass are left? = 48 (O) · Dr. Sterling lined up 8 rows of 10 notebook. How many notebook in all? = 80 (H) · There were 74 notebook. 7 were used up. How many notebook are left? = 67 (G)
- Clue 3 (Multiplication facts (1-12)): "THE SUSPECT RAN FROM COBWEBS IN THE RUINS"2 × 7 = 14 (T) · 4 × 7 = 28 (F) · 9 × 1 = 9 (B) · 6 × 3 = 18 (M) · 12 × 12 = 144 (I) · 11 × 11 = 121 (O) · 7 × 3 = 21 (H) · 12 × 6 = 72 (E) · 2 × 2 = 4 (W) · 4 × 11 = 44 (S) · 10 × 2 = 20 (C) · 2 × 11 = 22 (U) · 7 × 9 = 63 (P) · 9 × 10 = 90 (A) · 1 × 8 = 8 (R) · 11 × 1 = 11 (N)
- Clue 4 (Addition): "A SCRAP OF GREEN PLASTIC WAS LEFT BEHIND"1611 + 936 = 2547 (A) · 3001 + 4742 = 7743 (B) · 6378 + 3218 = 9596 (S) · 4469 + 3885 = 8354 (L) · 1677 + 2652 = 4329 (O) · 4672 + 3348 = 8020 (P) · 3408 + 2168 = 5576 (C) · 1079 + 1116 = 2195 (E) · 3209 + 4065 = 7274 (H) · 2857 + 3130 = 5987 (W) · 3300 + 2718 = 6018 (N) · 6484 + 2818 = 9302 (F) · 999 + 1485 = 2484 (G) · 3008 + 2739 = 5747 (R) · 3257 + 5203 = 8460 (I) · 880 + 1899 = 2779 (T) · 1087 + 964 = 2051 (D)
- Clue 5 (Division facts (1-12)): surviving statement (box 2) → Indy Jones3 ÷ 1 = 3 · 9 ÷ 9 = 1 · 77 ÷ 7 = 11 · 20 ÷ 5 = 4 · 45 ÷ 9 = 5 · 50 ÷ 5 = 10 · 18 ÷ 2 = 9 · 108 ÷ 9 = 12 · 42 ÷ 7 = 6 · 84 ÷ 12 = 7 · 80 ÷ 10 = 8
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Subtraction, Word problems, Multiplication, Addition, Division
- Reading level
- grades 5-6
- Theme
- The Lost Emerald of Mapogo — set in the deep Whispering Vines Jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects