🔎 HikingGrade 4Reading: grades 3-4AdditionRoundingSubtractionMultiplicationDivision
The Great Ridge Mystery
Someone swapped all the trail signs in Pine Valley! Head Ranger Dan needs your help to decode the clues, track down the suspect, and set the hiking paths right.
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 | Navigation Gear | Favorite Snack | Walking Style | Hat Type | Trail Hazard |
|---|---|---|---|---|---|
| Summit Sam | Trail Whistle | Granola Bites | Carries Wooden Staff | Orange Cap | Thick Briars |
| Sky Skylar | Brass Compass | Trail Mix | Uses Trekking Poles | Green Beanie | Thick Briars |
| Hiker Hannah | Digital GPS | Trail Mix | Carries Wooden Staff | Orange Cap | Thick Briars |
| Cliff Caleb | Digital GPS | Fruit Leather | Uses Trekking Poles | Green Beanie | Thick Briars |
| Peak Peter | Digital GPS | Dried Mango | Carries Wooden Staff | Orange Cap | Thick Briars |
| Trekkie Tim | Digital GPS | Energy Bar | Carries Wooden Staff | Orange Cap | Loose Scree |
| Sierra Sofia | Digital GPS | Dried Mango | Uses Trekking Poles | Yellow Bucket Hat | Thick Briars |
| Canyon Chloe | Brass Compass | Dried Mango | Carries Wooden Staff | Orange Cap | Thick Briars |
| River Riley | Paper Map | Fruit Leather | Uses Trekking Poles | Orange Cap | Muddy Slope |
| Boulder Ben | Digital GPS | Dried Mango | Carries Wooden Staff | Yellow Bucket Hat | Muddy Slope |
| Woodland Wyatt | Brass Compass | Dried Mango | Carries Wooden Staff | Orange Cap | Muddy Slope |
| Valley Violet | Altimeter Watch | Granola Bites | Uses Trekking Poles | Yellow Bucket Hat | Muddy Slope |
| Scout Sarah | Paper Map | Trail Mix | Carries Wooden Staff | Green Beanie | Thick Briars |
| Timber Toby | Trail Whistle | Dried Mango | Uses Trekking Poles | Orange Cap | Thick Briars |
| Ridge Ryan | Trail Whistle | Trail Mix | Uses Trekking Poles | Orange Cap | Loose Scree |
| Fern Fiona | Trail Whistle | Trail Mix | Carries Wooden Staff | Orange Cap | Thick Briars |
| Forest Frank | Altimeter Watch | Energy Bar | Carries Wooden Staff | Yellow Bucket Hat | Muddy Slope |
| Ranger Rick | Trail Whistle | Fruit Leather | Uses Trekking Poles | Orange Cap | Thick Briars |
| Brook Bella | Paper Map | Dried Mango | Uses Trekking Poles | Yellow Bucket Hat | Loose Scree |
| Alpine Alex | Brass Compass | Energy Bar | Carries Wooden Staff | Orange Cap | Loose Scree |
| Glacier Gavin | Brass Compass | Fruit Leather | Carries Wooden Staff | Orange Cap | Thick Briars |
Clue 1
Addition
You tally up all the supplies found at the trailhead to spot an extra pack.
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
5266
6588
6726
8969
9197
6726
2692
2889
4767
8969
9197
3343
3343
8350
2312
5309
2312
9197
3343
T
5266
8350
2692
6828
2889
2692
9197
4767
2312
7733
5309
6726
2312
7505
2692
9197
2237
3343
2412 + 2854 =T
686 + 1551 =G
2324 + 1019 =O
2952 + 4781 =R
3649 + 4701 =P
2619 + 2690 =I
4609 + 2117 =E
2273 + 5232 =M
3096 + 6101 =N
1101 + 1788 =K
4606 + 1982 =H
3693 + 5276 =S
2588 + 4240 =C
967 + 1725 =A
953 + 1359 =D
3214 + 1553 =Y
0/16 letters found
Clue 2
Rounding
The ranger checks the trail elevation display, which only shows rounded numbers.
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
370
900
2900
500
430
500
2300
2900
170
T
370
300
230
500
500
2900
2900
90
170
230
3700
3700
70
20
90
5000
230
300
3000
3000
1700
2900
90
500
T
370
230
1300
1300
Round 374 to the nearest tenT
Round 169 to the nearest tenC
Round 70 to the nearest tenY
Round 2,856 to the nearest hundredE
Round 3,679 to the nearest hundredR
Round 3,130 to the nearest thousandO
Round 5,252 to the nearest thousandG
Round 941 to the nearest hundredH
Round 2,290 to the nearest hundredP
Round 1,299 to the nearest hundredF
Round 273 to the nearest hundredW
Round 88 to the nearest tenN
Round 503 to the nearest hundredS
Round 231 to the nearest tenA
Round 432 to the nearest tenU
Round 18 to the nearest tenI
Round 1,710 to the nearest hundredD
0/17 letters found
Clue 3
Subtraction
You count the remaining water bottles left in the supply bin to see what was taken.
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
3018
6794
7614
2733
4886
2733
3705
7614
3298
T
3018
6720
5006
2733
6531
7614
2278
5006
2899
7614
6531
8978
2899
T
3018
6794
8230
3298
3824
8978
1062
8230
5006
1062
2733
5332 - 2314 =T
12702 - 3724 =B
7117 - 323 =H
3974 - 676 =C
5816 - 3083 =S
7213 - 493 =W
8462 - 4757 =P
13173 - 4943 =I
8580 - 4756 =K
3991 - 2929 =R
7661 - 4762 =Y
6546 - 15 =D
9852 - 4966 =U
11414 - 3800 =E
2994 - 716 =L
7710 - 2704 =A
0/16 letters found
Clue 4
Multiplication facts (1-12)
You calculate total trail snacks by counting equal rows inside the gear boxes.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
O
80
77
25
12
44
50
49
25
9
77
4
144
7
60
77
50
25
99
90
6
50
77
50
49
O
80
14
12
99
O
80
12
25
9
77
25
12
144
60
8 × 10 =O
12 × 12 =C
10 × 5 =E
4 × 11 =G
5 × 5 =A
7 × 1 =T
9 × 10 =S
11 × 7 =R
3 × 2 =W
7 × 2 =U
4 × 3 =N
7 × 7 =F
2 × 2 =I
1 × 9 =B
10 × 6 =H
9 × 11 =D
0/16 letters found
Clue 5
Division facts (1-12) — the last clue
You divide the total miles evenly among the search teams to cover every path.
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
30 ÷ 3 = ?
35 ÷ 7 = ?
63 ÷ 7 = ?
8 ÷ 2 = ?
63 ÷ 9 = ?
24 ÷ 12 = ?
12 ÷ 2 = ?
72 ÷ 9 = ?
9 ÷ 9 = ?
24 ÷ 8 = ?
72 ÷ 6 = ?
Step 2 — cross out the sentence with each answer
1.The villain aligned the brass compass, then eating dried mango.
2.The villain read the altimeter watch, then snacking on granola bites.
3.The villain checked the digital gps, then chewing an energy bar.
4.The villain read the altimeter watch, then nibbling fruit leather.
5.The villain checked the digital gps, then munching on trail mix.
6.The villain blew the trail whistle, then nibbling fruit leather.
7.The villain read the altimeter watch, then eating dried mango.
8.The villain aligned the brass compass, then munching on trail mix.
9.The villain blew the trail whistle, then munching on trail mix.
10.The villain aligned the brass compass, then nibbling fruit leather.
11.The villain blew the trail whistle, then snacking on granola bites.
12.The villain unfolded the paper map, then chewing an energy bar.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Ridge Mystery
Culprit: Summit Sam (Trail Whistle · Granola Bites · Carries Wooden Staff · Orange Cap · Thick Briars)
- Clue 1 (Addition): "THE SNEAKY SNOOP DID NOT PACK ANY DRIED MANGO"2412 + 2854 = 5266 (T) · 686 + 1551 = 2237 (G) · 2324 + 1019 = 3343 (O) · 2952 + 4781 = 7733 (R) · 3649 + 4701 = 8350 (P) · 2619 + 2690 = 5309 (I) · 4609 + 2117 = 6726 (E) · 2273 + 5232 = 7505 (M) · 3096 + 6101 = 9197 (N) · 1101 + 1788 = 2889 (K) · 4606 + 1982 = 6588 (H) · 3693 + 5276 = 8969 (S) · 2588 + 4240 = 6828 (C) · 967 + 1725 = 2692 (A) · 953 + 1359 = 2312 (D) · 3214 + 1553 = 4767 (Y)
- Clue 2 (Rounding): "THE SUSPECT WAS SEEN CARRYING A WOODEN STAFF"Round 374 to the nearest ten = 370 (T) · Round 169 to the nearest ten = 170 (C) · Round 70 to the nearest ten = 70 (Y) · Round 2,856 to the nearest hundred = 2900 (E) · Round 3,679 to the nearest hundred = 3700 (R) · Round 3,130 to the nearest thousand = 3000 (O) · Round 5,252 to the nearest thousand = 5000 (G) · Round 941 to the nearest hundred = 900 (H) · Round 2,290 to the nearest hundred = 2300 (P) · Round 1,299 to the nearest hundred = 1300 (F) · Round 273 to the nearest hundred = 300 (W) · Round 88 to the nearest ten = 90 (N) · Round 503 to the nearest hundred = 500 (S) · Round 231 to the nearest ten = 230 (A) · Round 432 to the nearest ten = 430 (U) · Round 18 to the nearest ten = 20 (I) · Round 1,710 to the nearest hundred = 1700 (D)
- Clue 3 (Subtraction): "THE SUSPECT WAS DELAYED BY THICK BRIARS"5332 - 2314 = 3018 (T) · 12702 - 3724 = 8978 (B) · 7117 - 323 = 6794 (H) · 3974 - 676 = 3298 (C) · 5816 - 3083 = 2733 (S) · 7213 - 493 = 6720 (W) · 8462 - 4757 = 3705 (P) · 13173 - 4943 = 8230 (I) · 8580 - 4756 = 3824 (K) · 3991 - 2929 = 1062 (R) · 7661 - 4762 = 2899 (Y) · 6546 - 15 = 6531 (D) · 9852 - 4966 = 4886 (U) · 11414 - 3800 = 7614 (E) · 2994 - 716 = 2278 (L) · 7710 - 2704 = 5006 (A)
- Clue 4 (Multiplication facts (1-12)): "ORANGE FABRIC THREADS WERE FOUND ON A BRANCH"8 × 10 = 80 (O) · 12 × 12 = 144 (C) · 10 × 5 = 50 (E) · 4 × 11 = 44 (G) · 5 × 5 = 25 (A) · 7 × 1 = 7 (T) · 9 × 10 = 90 (S) · 11 × 7 = 77 (R) · 3 × 2 = 6 (W) · 7 × 2 = 14 (U) · 4 × 3 = 12 (N) · 7 × 7 = 49 (F) · 2 × 2 = 4 (I) · 1 × 9 = 9 (B) · 10 × 6 = 60 (H) · 9 × 11 = 99 (D)
- Clue 5 (Division facts (1-12)): surviving statement (box 11) → Summit Sam30 ÷ 3 = 10 · 35 ÷ 7 = 5 · 63 ÷ 7 = 9 · 8 ÷ 2 = 4 · 63 ÷ 9 = 7 · 24 ÷ 12 = 2 · 12 ÷ 2 = 6 · 72 ÷ 9 = 8 · 9 ÷ 9 = 1 · 24 ÷ 8 = 3 · 72 ÷ 6 = 12
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Addition, Rounding, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Great Ridge Mystery — set in Pine Valley National Park
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects