🔎 HikingGrade 4Reading: grades 3-4AdditionRoundingSubtractionMultiplicationDivision
The Mystery of Misty Mountain Trail
Someone hidden on the mountain trail scrambled all the directional signs and hid the trail map! Detective, check the clues left along the path to find out who did it before nightfall.
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 | Trail Gear | Snack Stash | Compass Wrist | Bandana Color | Trail Hazard |
|---|---|---|---|---|---|
| Babsi Zangerl | Hiking Poles | Beef Jerky | Right Wrist | Blue Bandana | Muddy Slopes |
| Cheryl Strayed | Trekking Pack | Peanut Butter | Left Wrist | Green Bandana | Poison Ivy |
| Junko Tabei | Trekking Pack | Dried Fruit | Right Wrist | Red Bandana | Muddy Slopes |
| Reinhold Messner | Trekking Pack | Energy Bars | Right Wrist | Red Bandana | Mosquito Swarms |
| Bear Grylls | Trekking Pack | Dried Fruit | Right Wrist | Red Bandana | Mosquito Swarms |
| Grandma Gatewood | GPS Watch | Dried Fruit | Left Wrist | Blue Bandana | Muddy Slopes |
| Lynn Hill | Hiking Poles | Beef Jerky | Left Wrist | Red Bandana | Mosquito Swarms |
| Alison Hargreaves | Hiking Poles | Trail Mix | Left Wrist | Red Bandana | Muddy Slopes |
| Alex Honnold | Hiking Poles | Beef Jerky | Right Wrist | Red Bandana | Mosquito Swarms |
| John Muir | Heavy Boots | Beef Jerky | Right Wrist | Blue Bandana | Muddy Slopes |
| Melissa Arnot | GPS Watch | Trail Mix | Right Wrist | Red Bandana | Muddy Slopes |
| Ed Viesturs | Hiking Poles | Peanut Butter | Right Wrist | Green Bandana | Poison Ivy |
| Colin O Brady | Heavy Boots | Beef Jerky | Left Wrist | Red Bandana | Poison Ivy |
| Erik Weihenmayer | GPS Watch | Dried Fruit | Right Wrist | Red Bandana | Muddy Slopes |
| Dave Hahn | Trekking Pack | Beef Jerky | Right Wrist | Green Bandana | Mosquito Swarms |
| Arlene Blum | GPS Watch | Peanut Butter | Right Wrist | Green Bandana | Muddy Slopes |
| Laurie Skreslet | Solar Charger | Peanut Butter | Right Wrist | Blue Bandana | Mosquito Swarms |
| Jennifer Pharr Davis | GPS Watch | Peanut Butter | Left Wrist | Red Bandana | Mosquito Swarms |
| Jimmy Chin | Solar Charger | Beef Jerky | Left Wrist | Blue Bandana | Poison Ivy |
| Anker Sorlie | Solar Charger | Peanut Butter | Right Wrist | Red Bandana | Muddy Slopes |
| George Mallory | Solar Charger | Energy Bars | Right Wrist | Red Bandana | Muddy Slopes |
Clue 1
Addition
Ranger Rick tallying the trail markers added up all the steps taken 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
4695
5162
5349
4725
7689
8882
8882
8144
7689
6039
5162
8144
2415
6039
3881
5349
6039
5349
3821
9254
4311
5446
8144
3821
2415
1755 + 2940 =T
5342 + 2347 =I
5047 + 3835 =L
3099 + 5045 =A
2972 + 2377 =E
1114 + 1301 =S
1404 + 2477 =O
2523 + 2639 =H
3060 + 2386 =B
4119 + 5135 =G
3116 + 2923 =N
1617 + 2694 =Y
2108 + 2617 =V
1704 + 2117 =R
0/14 letters found
Clue 2
Rounding
The electronic trailhead sign rounds all distance measurements to the nearest hundred.
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
2300
900
9000
1700
70
1700
20
9000
200
T
2300
30
370
700
9000
T
2300
900
9000
200
370
7000
20
130
1700
1700
370
1300
T
2300
900
9000
700
50
2900
900
T
2300
30
700
50
1700
T
2300
Round 2,291 to the nearest hundredT
Round 653 to the nearest hundredR
Round 1,672 to the nearest hundredS
Round 9,223 to the nearest thousandE
Round 217 to the nearest hundredC
Round 915 to the nearest hundredH
Round 32 to the nearest tenW
Round 370 to the nearest tenO
Round 17 to the nearest tenP
Round 49 to the nearest tenI
Round 72 to the nearest tenU
Round 128 to the nearest tenA
Round 2,925 to the nearest hundredG
Round 6,643 to the nearest thousandM
Round 1,277 to the nearest hundredN
0/15 letters found
Clue 3
Subtraction
The logbook shows how many supply boxes remain after subtracting what was used.
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
8199
6505
5752
6215
6673
6215
4223
5752
5289
T
8199
6215
3503
3100
4223
4223
5752
3960
4960
8105
5490
6673
3960
3960
8087
6215
3503
4960
4223
5752
6215
10529 - 2330 =T
6291 - 801 =M
7838 - 3878 =D
7195 - 690 =H
6349 - 134 =S
5641 - 1418 =P
10874 - 2769 =N
8735 - 3446 =C
3874 - 371 =L
9619 - 2946 =U
7390 - 2430 =O
8985 - 898 =Y
6015 - 2915 =I
6983 - 1231 =E
0/14 letters found
Clue 4
Multiplication facts (1-12)
Each hiking group carries equal rows of water bottles in their packs.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
R
14
3
49
63
35
48
49
35
48
35
24
66
R
14
3
35
49
20
12
3
R
14
3
9
48
35
63
R
14
35
48
8
66
7 × 2 =R
7 × 7 =D
12 × 2 =T
8 × 6 =N
9 × 7 =B
7 × 5 =A
1 × 9 =O
3 × 1 =E
6 × 11 =H
1 × 12 =W
1 × 8 =C
2 × 10 =S
0/12 letters found
Clue 5
Division facts (1-12) — the last clue
The camp counselors split the trail maps equally among all small hiking teams.
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
42 ÷ 7 = ?
36 ÷ 9 = ?
50 ÷ 5 = ?
48 ÷ 4 = ?
70 ÷ 10 = ?
90 ÷ 10 = ?
20 ÷ 4 = ?
66 ÷ 6 = ?
6 ÷ 6 = ?
72 ÷ 9 = ?
9 ÷ 3 = ?
Step 2 — cross out the sentence with each answer
1.The villain checked a gps watch, then spread peanut butter.
2.The villain set up a solar charger, then spread peanut butter.
3.The villain used heavy hiking poles, then chewed dried fruit.
4.The villain checked a gps watch, then chewed dried fruit.
5.The villain set up a solar charger, then snacked on beef jerky.
6.The villain checked a gps watch, then munched on trail mix.
7.The villain set up a solar charger, then chewed dried fruit.
8.The villain used heavy hiking poles, then munched on trail mix.
9.The villain set up a solar charger, then ate energy bars.
10.The villain hefted a trekking pack, then chewed dried fruit.
11.The villain stomped in muddy boots, then ate energy bars.
12.The villain used heavy hiking poles, then ate energy bars.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of Misty Mountain Trail
Culprit: Anker Sorlie (Solar Charger · Peanut Butter · Right Wrist · Red Bandana · Muddy Slopes)
- Clue 1 (Addition): "THE VILLAIN HAS NO ENERGY BARS"1755 + 2940 = 4695 (T) · 5342 + 2347 = 7689 (I) · 5047 + 3835 = 8882 (L) · 3099 + 5045 = 8144 (A) · 2972 + 2377 = 5349 (E) · 1114 + 1301 = 2415 (S) · 1404 + 2477 = 3881 (O) · 2523 + 2639 = 5162 (H) · 3060 + 2386 = 5446 (B) · 4119 + 5135 = 9254 (G) · 3116 + 2923 = 6039 (N) · 1617 + 2694 = 4311 (Y) · 2108 + 2617 = 4725 (V) · 1704 + 2117 = 3821 (R)
- Clue 2 (Rounding): "THE SUSPECT WORE THE COMPASS ON THE RIGHT WRIST"Round 2,291 to the nearest hundred = 2300 (T) · Round 653 to the nearest hundred = 700 (R) · Round 1,672 to the nearest hundred = 1700 (S) · Round 9,223 to the nearest thousand = 9000 (E) · Round 217 to the nearest hundred = 200 (C) · Round 915 to the nearest hundred = 900 (H) · Round 32 to the nearest ten = 30 (W) · Round 370 to the nearest ten = 370 (O) · Round 17 to the nearest ten = 20 (P) · Round 49 to the nearest ten = 50 (I) · Round 72 to the nearest ten = 70 (U) · Round 128 to the nearest ten = 130 (A) · Round 2,925 to the nearest hundred = 2900 (G) · Round 6,643 to the nearest thousand = 7000 (M) · Round 1,277 to the nearest hundred = 1300 (N)
- Clue 3 (Subtraction): "THE SUSPECT SLIPPED ON MUDDY SLOPES"10529 - 2330 = 8199 (T) · 6291 - 801 = 5490 (M) · 7838 - 3878 = 3960 (D) · 7195 - 690 = 6505 (H) · 6349 - 134 = 6215 (S) · 5641 - 1418 = 4223 (P) · 10874 - 2769 = 8105 (N) · 8735 - 3446 = 5289 (C) · 3874 - 371 = 3503 (L) · 9619 - 2946 = 6673 (U) · 7390 - 2430 = 4960 (O) · 8985 - 898 = 8087 (Y) · 6015 - 2915 = 3100 (I) · 6983 - 1231 = 5752 (E)
- Clue 4 (Multiplication facts (1-12)): "RED BANDANA THREADS WERE ON A BRANCH"7 × 2 = 14 (R) · 7 × 7 = 49 (D) · 12 × 2 = 24 (T) · 8 × 6 = 48 (N) · 9 × 7 = 63 (B) · 7 × 5 = 35 (A) · 1 × 9 = 9 (O) · 3 × 1 = 3 (E) · 6 × 11 = 66 (H) · 1 × 12 = 12 (W) · 1 × 8 = 8 (C) · 2 × 10 = 20 (S)
- Clue 5 (Division facts (1-12)): surviving statement (box 2) → Anker Sorlie42 ÷ 7 = 6 · 36 ÷ 9 = 4 · 50 ÷ 5 = 10 · 48 ÷ 4 = 12 · 70 ÷ 10 = 7 · 90 ÷ 10 = 9 · 20 ÷ 4 = 5 · 66 ÷ 6 = 11 · 6 ÷ 6 = 1 · 72 ÷ 9 = 8 · 9 ÷ 3 = 3
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Addition, Rounding, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Mystery of Misty Mountain Trail — set in Pine Ridge Nature Reserve
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects