Grade 5Reading: grades 1-2SubtractionMultiplicationRoundingAdditionDivision
The Case of the Golden Pineapple
Someone slipped into the camp cabin and took the rare Golden Pineapple! Ranger Dan needs your help. Look at the clues and find the sneaky camper!
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 | Camp Badge | Pocket Gear | Compass Grip | Gear Thread | Best Defense |
|---|---|---|---|---|---|
| Roy | Boating Badge | whistle | right handed | green cotton | banana peel |
| Ned | Boating Badge | magnifier | right handed | green cotton | banana peel |
| Tad | Tracking Badge | canteen | right handed | blue wool | shiny light |
| Gus | Hiking Badge | spyglass | right handed | blue wool | loud whistle |
| Max | Boating Badge | canteen | left handed | green cotton | banana peel |
| Leo | Mapping Badge | rope | right handed | red silk | loud whistle |
| Eva | Mapping Badge | whistle | right handed | green cotton | shiny light |
| Ian | Tracking Badge | spyglass | right handed | green cotton | loud whistle |
| Ben | Boating Badge | rope | left handed | blue wool | shiny light |
| Ava | Climbing Badge | canteen | left handed | blue wool | loud whistle |
| Sam | Mapping Badge | spyglass | right handed | blue wool | banana peel |
| Eli | Boating Badge | whistle | left handed | red silk | banana peel |
| Ivy | Mapping Badge | canteen | right handed | green cotton | banana peel |
| Mia | Mapping Badge | canteen | right handed | blue wool | banana peel |
| Mae | Boating Badge | canteen | right handed | blue wool | loud whistle |
| Dan | Hiking Badge | whistle | left handed | green cotton | loud whistle |
| Jan | Hiking Badge | whistle | right handed | green cotton | banana peel |
| Jax | Tracking Badge | canteen | right handed | green cotton | loud whistle |
| Joy | Climbing Badge | spyglass | right handed | green cotton | banana peel |
| Zoe | Hiking Badge | whistle | right handed | green cotton | shiny light |
| Sky | Hiking Badge | canteen | left handed | red silk | shiny light |
Clue 1
Subtraction
Ranger Dan had twenty camp badges. Now some are gone. Subtract the left badges from the start to find the missing ones.
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
6063
1799
5029
T
6063
1799
7457
5029
5217
7316
1381
5029
2546
1017
1381
T
6063
2207
2546
5029
T
6063
1799
5029
2546
2215
2314
1763
3700
3233
2546
2546
10060 - 3997 =T
1705 - 688 =N
3390 - 1175 =P
6722 - 4923 =H
2459 - 252 =U
4193 - 493 =L
2912 - 1149 =G
5402 - 3088 =Y
4930 - 1697 =A
7336 - 4790 =S
3027 - 1646 =O
10050 - 4833 =F
10406 - 2949 =I
8276 - 3247 =E
10098 - 2782 =D
0/15 letters found
Clue 2
Multiplication facts (1-12)
We found rows of footprints near the mud. Each row has the same number. Multiply them to count the total steps.
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
8
9
45
T
8
9
27
45
84
20
5
45
5
3
33
27
2
9
T
8
9
3
48
55
132
28
64
44
3
5
5
2 × 4 =T
11 × 4 =P
5 × 9 =E
12 × 11 =C
8 × 6 =N
5 × 4 =U
7 × 12 =F
1 × 9 =H
8 × 8 =M
5 × 11 =D
1 × 2 =G
3 × 11 =R
3 × 9 =I
1 × 3 =A
4 × 7 =O
5 × 1 =S
0/16 letters found
Clue 3
Rounding
Our radio signal is weak. The distance scale only shows rounded numbers. Round the number to find where the signal came from.
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
500
7000
1100
T
500
7000
230
1100
4300
T
500
290
230
2900
2900
1100
90
1700
200
2000
370
2000
200
2000
200
2000
2900
1100
1100
70
Round 544 to the nearest hundredT
Round 229 to the nearest tenI
Round 374 to the nearest tenB
Round 2,904 to the nearest hundredP
Round 4,348 to the nearest hundredF
Round 7,287 to the nearest thousandH
Round 202 to the nearest hundredN
Round 93 to the nearest tenD
Round 1,710 to the nearest hundredO
Round 2,029 to the nearest thousandA
Round 294 to the nearest tenR
Round 1,060 to the nearest hundredE
Round 70 to the nearest tenL
0/13 letters found
Clue 4
Addition
Let's count the gear pieces found in the grass. Add the two small piles together to get the total clue count.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
G
3625
7156
6184
6184
6605
4340
4397
7151
7151
4397
6605
7151
5871
7156
6184
2062
3585
4340
7007
2188
6605
G
3625
7151
4397
2062
7151
5871
4397
7156
6605
1867 + 1758 =G
2202 + 4949 =T
917 + 1271 =U
1903 + 2437 =C
2650 + 1747 =O
3592 + 3013 =N
1077 + 985 =A
2321 + 4835 =R
2373 + 4634 =L
3336 + 2535 =H
2374 + 1211 =D
3217 + 2967 =E
0/12 letters found
Clue 5
Division facts (1-12) — the last clue
We need to share these trail markers equally among the five search groups. Divide them up so everyone has a fair share.
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
4 ÷ 1 = ?
90 ÷ 9 = ?
12 ÷ 1 = ?
99 ÷ 11 = ?
50 ÷ 10 = ?
6 ÷ 6 = ?
36 ÷ 6 = ?
80 ÷ 10 = ?
55 ÷ 5 = ?
3 ÷ 1 = ?
49 ÷ 7 = ?
Step 2 — cross out the sentence with each answer
1.The villain crosses the rope bridge, then steals the ruby coin.
2.The villain paddles the fast kayak, then grabs the silver compass.
3.The villain paddles the fast kayak, then snatches the golden map.
4.The villain crosses the rope bridge, then grabs the silver compass.
5.The villain climbs the tall vine, then grabs the silver compass.
6.The villain digs in the soft mud, then pockets the ancient map.
7.The villain digs in the soft mud, then steals the ruby coin.
8.The villain climbs the tall vine, then steals the ruby coin.
9.The villain digs in the soft mud, then grabs the silver compass.
10.The villain crosses the rope bridge, then pockets the ancient map.
11.The villain digs in the soft mud, then takes the crystal key.
12.The villain unlocks the wooden gate, then takes the crystal key.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Golden Pineapple
Culprit: Jan (Hiking Badge · whistle · right handed · green cotton · banana peel)
- Clue 1 (Subtraction): "THE THIEF DOES NOT USE THE SPYGLASS"10060 - 3997 = 6063 (T) · 1705 - 688 = 1017 (N) · 3390 - 1175 = 2215 (P) · 6722 - 4923 = 1799 (H) · 2459 - 252 = 2207 (U) · 4193 - 493 = 3700 (L) · 2912 - 1149 = 1763 (G) · 5402 - 3088 = 2314 (Y) · 4930 - 1697 = 3233 (A) · 7336 - 4790 = 2546 (S) · 3027 - 1646 = 1381 (O) · 10050 - 4833 = 5217 (F) · 10406 - 2949 = 7457 (I) · 8276 - 3247 = 5029 (E) · 10098 - 2782 = 7316 (D)
- Clue 2 (Multiplication facts (1-12)): "THE THIEF USES A RIGHT HAND COMPASS"2 × 4 = 8 (T) · 11 × 4 = 44 (P) · 5 × 9 = 45 (E) · 12 × 11 = 132 (C) · 8 × 6 = 48 (N) · 5 × 4 = 20 (U) · 7 × 12 = 84 (F) · 1 × 9 = 9 (H) · 8 × 8 = 64 (M) · 5 × 11 = 55 (D) · 1 × 2 = 2 (G) · 3 × 11 = 33 (R) · 3 × 9 = 27 (I) · 1 × 3 = 3 (A) · 4 × 7 = 28 (O) · 5 × 1 = 5 (S)
- Clue 3 (Rounding): "THE THIEF TRIPPED ON A BANANA PEEL"Round 544 to the nearest hundred = 500 (T) · Round 229 to the nearest ten = 230 (I) · Round 374 to the nearest ten = 370 (B) · Round 2,904 to the nearest hundred = 2900 (P) · Round 4,348 to the nearest hundred = 4300 (F) · Round 7,287 to the nearest thousand = 7000 (H) · Round 202 to the nearest hundred = 200 (N) · Round 93 to the nearest ten = 90 (D) · Round 1,710 to the nearest hundred = 1700 (O) · Round 2,029 to the nearest thousand = 2000 (A) · Round 294 to the nearest ten = 290 (R) · Round 1,060 to the nearest hundred = 1100 (E) · Round 70 to the nearest ten = 70 (L)
- Clue 4 (Addition): "GREEN COTTON THREAD CLUNG TO A THORN"1867 + 1758 = 3625 (G) · 2202 + 4949 = 7151 (T) · 917 + 1271 = 2188 (U) · 1903 + 2437 = 4340 (C) · 2650 + 1747 = 4397 (O) · 3592 + 3013 = 6605 (N) · 1077 + 985 = 2062 (A) · 2321 + 4835 = 7156 (R) · 2373 + 4634 = 7007 (L) · 3336 + 2535 = 5871 (H) · 2374 + 1211 = 3585 (D) · 3217 + 2967 = 6184 (E)
- Clue 5 (Division facts (1-12)): surviving statement (box 2) → Jan4 ÷ 1 = 4 · 90 ÷ 9 = 10 · 12 ÷ 1 = 12 · 99 ÷ 11 = 9 · 50 ÷ 10 = 5 · 6 ÷ 6 = 1 · 36 ÷ 6 = 6 · 80 ÷ 10 = 8 · 55 ÷ 5 = 11 · 3 ÷ 1 = 3 · 49 ÷ 7 = 7
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Subtraction, Multiplication, Rounding, Addition, Division
- Reading level
- grades 1-2
- Theme
- The Case of the Golden Pineapple — set in Camp Wildwood Jungle
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects