Grade 4Reading: grades 3-4Fractions of a numberRoundingPlace valueSkip counting
The Lost Temple Treasure Mystery
Someone raided the ancient Golden Sun Temple and stole the Sun Disk! The Museum Curator needs your detective skills to find which rogue explorer did it.
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 | Main Tool | Extra Gear | Habit | Hat Color | Weak Spot |
|---|---|---|---|---|---|
| Tenzing Norgay | Machete | Diving Suit | Left Handed | Tan Helmet | Loud Whistle |
| Freya Stark | Grappling Hook | Climbing Rope | Left Handed | Green Cap | Sneezy Dust |
| Amelia Earhart | Flashlight | Climbing Rope | Right Handed | Tan Helmet | Loud Whistle |
| Jack Wilderness | Machete | Diving Suit | Left Handed | Tan Helmet | Sneezy Dust |
| Lara Croft | Flashlight | Binoculars | Right Handed | Green Cap | Sneezy Dust |
| Matthew Henson | Metal Detector | Climbing Rope | Left Handed | Green Cap | Sneezy Dust |
| Marco Polo | Metal Detector | Diving Suit | Left Handed | Tan Helmet | Loud Whistle |
| Alexandra David | Metal Detector | Climbing Rope | Right Handed | Brown Fedora | Loud Whistle |
| Bear Grylls | Metal Detector | Jetpack | Left Handed | Tan Helmet | Loud Whistle |
| Nathan Drake | Grappling Hook | Diving Suit | Right Handed | Green Cap | Bright Light |
| Jacques Cousteau | Flashlight | Climbing Rope | Right Handed | Tan Helmet | Sneezy Dust |
| Edmund Hillary | Metal Detector | Parachute | Right Handed | Green Cap | Sneezy Dust |
| Ernest Shackleton | Machete | Diving Suit | Left Handed | Green Cap | Loud Whistle |
| Percy Fawcett | Metal Detector | Parachute | Left Handed | Tan Helmet | Loud Whistle |
| Gertrude Bell | Grappling Hook | Jetpack | Left Handed | Brown Fedora | Sneezy Dust |
| Hiram Bingham | Machete | Parachute | Left Handed | Tan Helmet | Sneezy Dust |
| Jane Goodall | Compass | Climbing Rope | Left Handed | Tan Helmet | Loud Whistle |
| Mary Leakey | Flashlight | Binoculars | Right Handed | Brown Fedora | Loud Whistle |
| Charles Darwin | Machete | Parachute | Right Handed | Brown Fedora | Loud Whistle |
| Steve Irwin | Machete | Jetpack | Right Handed | Brown Fedora | Bright Light |
| Nellie Bly | Flashlight | Climbing Rope | Left Handed | Tan Helmet | Bright Light |
Clue 1
Fractions of a number
You examine a fragment of the ancient stone map to calculate how many trail miles the thief covered.
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
7
20
31
25
4
25
17
31
32
T
7
33
38
31
25
35
38
T
7
32
28
37
37
19
28
16
31
T
7
17
28
32
39
1/4 of 28 =T
1/2 of 50 =S
4/8 of 32 =J
4/6 of 42 =A
2/8 of 148 =R
7/8 of 40 =N
1/4 of 124 =E
1/10 of 40 =U
1/4 of 76 =Y
1/3 of 99 =D
4/10 of 50 =H
1/4 of 152 =O
1/10 of 170 =P
3/6 of 78 =K
8/10 of 40 =C
0/15 letters found
Clue 2
Rounding
The camp radio receiver is fuzzy, so the sonar signal only gives a rounded distance to the bandit camp.
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
1700
230
3700
4300
2300
290
290
290
170
W
1700
3700
20
2300
2000
1300
290
2300
170
130
2300
5000
3700
20
170
4300
110
2300
110
3000
900
230
1100
Round 1,691 to the nearest hundredW
Round 127 to the nearest tenL
Round 5,484 to the nearest thousandF
Round 171 to the nearest tenA
Round 2,427 to the nearest thousandM
Round 232 to the nearest tenI
Round 290 to the nearest tenS
Round 2,301 to the nearest hundredE
Round 113 to the nearest tenD
Round 1,344 to the nearest hundredU
Round 1,130 to the nearest hundredP
Round 3,739 to the nearest hundredT
Round 892 to the nearest hundredR
Round 2,575 to the nearest thousandG
Round 17 to the nearest tenH
Round 4,254 to the nearest hundredN
0/16 letters found
Clue 3
Place value
You crack the temple door code by looking at the digit in the tens place of the ancient lock.
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
3000
30
1000
500
100
90
80
7000
60
300
30
800
60
4000
A
3000
600
800
100
300
80
800
300
80
7000
800
400
A
3000
90
A
3000
700
What is the value of the 3 in 3,579?A
What is the value of the 3 in 834?L
What is the value of the 1 in 2,179?D
What is the value of the 4 in 416?F
What is the value of the 3 in 314?T
What is the value of the 7 in 765?Y
What is the value of the 5 in 9,581?U
What is the value of the 1 in 1,870?O
What is the value of the 8 in 2,824?E
What is the value of the 6 in 605?R
What is the value of the 9 in 5,191?W
What is the value of the 8 in 383?H
What is the value of the 4 in 4,508?C
What is the value of the 7 in 57,813?I
What is the value of the 6 in 364?S
0/15 letters found
Clue 4
Skip counting
You count footstep prints along the muddy riverbank by skipping in groups across the bank.
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
6
15
21
45
110
80
30
110
T
6
130
50
90
15
T
6
50
45
110
130
14
110
90
110
10
21
T
6
45
110
14
15
80
80
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10T
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55H
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25A
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27N
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100L
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14O
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70C
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110R
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, ___, 33, 36M
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130E
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18W
0/12 letters found
Clue 5
Fractions of a number — the last clue
You calculate how many gold coins were left behind out of the total chest to pinpoint the escape route.
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
6/8 of 4 = ?
1/3 of 18 = ?
3/6 of 22 = ?
3/10 of 40 = ?
1/10 of 100 = ?
1/2 of 10 = ?
1/5 of 45 = ?
1/8 of 16 = ?
8/10 of 10 = ?
2/8 of 4 = ?
4/8 of 14 = ?
Step 2 — cross out the sentence with each answer
1.The villain checked a brass compass, then packed a silk parachute.
2.The villain shined a heavy flashlight, then strapped on a noisy jetpack.
3.The villain checked a brass compass, then coiled a thick climbing rope.
4.The villain swung a machete through vines, then wore a neoprene diving suit.
5.The villain scanned with a metal detector, then strapped on a noisy jetpack.
6.The villain scanned with a metal detector, then wore a neoprene diving suit.
7.The villain swung a machete through vines, then strapped on a noisy jetpack.
8.The villain launched a grappling hook, then adjusted compact binoculars.
9.The villain launched a grappling hook, then packed a silk parachute.
10.The villain swung a machete through vines, then adjusted compact binoculars.
11.The villain scanned with a metal detector, then packed a silk parachute.
12.The villain checked a brass compass, then strapped on a noisy jetpack.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Lost Temple Treasure Mystery
Culprit: Tenzing Norgay (Machete · Diving Suit · Left Handed · Tan Helmet · Loud Whistle)
- Clue 1 (Fractions of a number): "THE SUSPECT DOES NOT CARRY A JETPACK"1/4 of 28 = 7 (T) · 1/2 of 50 = 25 (S) · 4/8 of 32 = 16 (J) · 4/6 of 42 = 28 (A) · 2/8 of 148 = 37 (R) · 7/8 of 40 = 35 (N) · 1/4 of 124 = 31 (E) · 1/10 of 40 = 4 (U) · 1/4 of 76 = 19 (Y) · 1/3 of 99 = 33 (D) · 4/10 of 50 = 20 (H) · 1/4 of 152 = 38 (O) · 1/10 of 170 = 17 (P) · 3/6 of 78 = 39 (K) · 8/10 of 40 = 32 (C)
- Clue 2 (Rounding): "WITNESS SAW THEM USE A LEFT HANDED GRIP"Round 1,691 to the nearest hundred = 1700 (W) · Round 127 to the nearest ten = 130 (L) · Round 5,484 to the nearest thousand = 5000 (F) · Round 171 to the nearest ten = 170 (A) · Round 2,427 to the nearest thousand = 2000 (M) · Round 232 to the nearest ten = 230 (I) · Round 290 to the nearest ten = 290 (S) · Round 2,301 to the nearest hundred = 2300 (E) · Round 113 to the nearest ten = 110 (D) · Round 1,344 to the nearest hundred = 1300 (U) · Round 1,130 to the nearest hundred = 1100 (P) · Round 3,739 to the nearest hundred = 3700 (T) · Round 892 to the nearest hundred = 900 (R) · Round 2,575 to the nearest thousand = 3000 (G) · Round 17 to the nearest ten = 20 (H) · Round 4,254 to the nearest hundred = 4300 (N)
- Clue 3 (Place value): "A LOUD WHISTLE SCARED THE THIEF AWAY"What is the value of the 3 in 3,579? = 3000 (A) · What is the value of the 3 in 834? = 30 (L) · What is the value of the 1 in 2,179? = 100 (D) · What is the value of the 4 in 416? = 400 (F) · What is the value of the 3 in 314? = 300 (T) · What is the value of the 7 in 765? = 700 (Y) · What is the value of the 5 in 9,581? = 500 (U) · What is the value of the 1 in 1,870? = 1000 (O) · What is the value of the 8 in 2,824? = 800 (E) · What is the value of the 6 in 605? = 600 (R) · What is the value of the 9 in 5,191? = 90 (W) · What is the value of the 8 in 383? = 80 (H) · What is the value of the 4 in 4,508? = 4000 (C) · What is the value of the 7 in 57,813? = 7000 (I) · What is the value of the 6 in 364? = 60 (S)
- Clue 4 (Skip counting): "TAN HELMET SCRATCHES WERE ON THE WALL"Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (T) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (H) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (A) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (N) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (L) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (O) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70 = 50 (C) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, ___, 100, 110 = 90 (R) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, ___, 33, 36 = 30 (M) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (W)
- Clue 5 (Fractions of a number): surviving statement (box 4) → Tenzing Norgay6/8 of 4 = 3 · 1/3 of 18 = 6 · 3/6 of 22 = 11 · 3/10 of 40 = 12 · 1/10 of 100 = 10 · 1/2 of 10 = 5 · 1/5 of 45 = 9 · 1/8 of 16 = 2 · 8/10 of 10 = 8 · 2/8 of 4 = 1 · 4/8 of 14 = 7
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Fractions of a number, Rounding, Place value, Skip counting
- Reading level
- grades 3-4
- Theme
- The Lost Temple Treasure Mystery — set in Serpent Skull Island Jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects