🐱 CatsGrade 5Reading: grades 5-6Fractions of a numberWord problemsOrder of operationsMultiplicationDivision
The Case of the Missing Diamond Collar
During the grand finale of the annual Whiskered Manor Cat Show, the priceless Diamond Collar vanished from its velvet display pillow. Detective Whiskers and the Purr Patrol are on the scene to examine clues, crack codes, and unmask the sneaky culprit before they slip away.
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 Skill | Gadget Used | Dominant Paw | Fur Color | Biggest Fear |
|---|---|---|---|---|---|
| Otis Orange | Wall Dash | Laser Pointer | Right Paw Dominant | Orange Tabby | Vacuum Cleaner |
| Felix Whiskers | Silent Paws | Feather Wand | Right Paw Dominant | Jet Black | Spray Bottle |
| Bella Bouncer | Wall Dash | Squeaky Toy | Right Paw Dominant | Jet Black | Loud Thunder |
| Oliver Scratch | Pounce Attack | Catnip Bomb | Left Paw Dominant | Jet Black | Loud Thunder |
| Nala Nip | Night Vision | Laser Pointer | Right Paw Dominant | Orange Tabby | Vacuum Cleaner |
| Barnaby Paws | Wall Dash | Yarn Launcher | Left Paw Dominant | Calico | Loud Thunder |
| Duchess Fluff | Pounce Attack | Squeaky Toy | Right Paw Dominant | Orange Tabby | Loud Thunder |
| Callie Calico | Night Vision | Feather Wand | Right Paw Dominant | Jet Black | Loud Thunder |
| Milo Meow | High Leap | Yarn Launcher | Right Paw Dominant | Calico | Loud Thunder |
| Daisy Duster | Night Vision | Catnip Bomb | Right Paw Dominant | Orange Tabby | Spray Bottle |
| Pumpkin Patch | High Leap | Yarn Launcher | Right Paw Dominant | Orange Tabby | Vacuum Cleaner |
| Simba Swiperson | Wall Dash | Feather Wand | Right Paw Dominant | Calico | Loud Thunder |
| Smokey Furr | High Leap | Squeaky Toy | Left Paw Dominant | Calico | Loud Thunder |
| Hazel Hiss | Wall Dash | Yarn Launcher | Right Paw Dominant | Jet Black | Vacuum Cleaner |
| Luna Tailor | Pounce Attack | Catnip Bomb | Right Paw Dominant | Calico | Loud Thunder |
| Pepper Paws | Night Vision | Feather Wand | Right Paw Dominant | Calico | Loud Thunder |
| Cleo Clawson | Silent Paws | Feather Wand | Right Paw Dominant | Orange Tabby | Loud Thunder |
| Penny Pouncer | Pounce Attack | Squeaky Toy | Right Paw Dominant | Calico | Loud Thunder |
| Ziggy Zoomer | Wall Dash | Catnip Bomb | Right Paw Dominant | Calico | Vacuum Cleaner |
| Shadow Stealth | Pounce Attack | Yarn Launcher | Right Paw Dominant | Jet Black | Spray Bottle |
| Mittens McPhee | Night Vision | Feather Wand | Right Paw Dominant | Calico | Spray Bottle |
Clue 1
Fractions of a number
Detective Whiskers inventories the show supplies and organizes notes across the manor to eliminate early suspects.
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
39
15
24
37
34
30
30
28
34
11
17
34
17
11
26
T
39
14
33
24
28
2
28
40
11
30
28
14
11
13
15
24
40
3/8 of 104 =T
1/2 of 80 =R
3/6 of 4 =Y
5/10 of 68 =I
2/6 of 33 =N
1/8 of 104 =C
2/10 of 85 =D
5/10 of 56 =A
1/2 of 66 =S
1/4 of 96 =E
1/6 of 90 =H
4/8 of 74 =V
7/10 of 20 =U
2/5 of 65 =O
2/4 of 60 =L
0/15 letters found
Clue 2
Word problems
Analyzing the pantry inventory, the detective calculates what fraction of gourmet salmon cans were disturbed during the robbery.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
R
16
42
104
120
112
86
81
W
D
O
M
42
N
81
N
112
Detective Whiskers lined up 2 rows of 8 grooming brushes. How many grooming brushes in all?R
Detective Whiskers found 27 grooming brushes yesterday and 77 more today. How many grooming brushes in all?G
Detective Whiskers found 8 feather toys yesterday and 78 more today. How many feather toys in all?P
There were 93 feather toys. 12 were used up. How many feather toys are left?A
Detective Whiskers lined up 7 rows of 6 catnip pouches. How many catnip pouches in all?I
Detective Whiskers found 4 cans of salmon yesterday and 116 more today. How many cans of salmon in all?H
Detective Whiskers found 48 catnip pouches yesterday and 64 more today. How many catnip pouches in all?T
0/7 letters found
Clue 3
Order of operations
To unlock the vault security log, you must evaluate a multi-step keypad code using the order of operations.
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
43
58
70
9
31
80
74
60
41
T
43
58
41
24
70
63
42
58
70
29
80
66
31
24
T
43
58
31
29
24
70
60
60
31
33
12
80
70
63
25 + 3 × 6 =T
15 + 8 × 6 =S
5 + 2 × 2 =C
5 × 12 - 19 =I
26 + 6 × 9 =L
6 × 11 - 6 =R
4 × 12 - 6 =W
13 + 3 × 6 =U
3 × 10 - 18 =B
9 × 10 - 16 =P
35 + 5 × 7 =E
10 × 3 - 1 =N
10 + 7 × 8 =O
7 × 6 - 9 =M
42 + 2 × 8 =H
12 + 2 × 6 =D
0/16 letters found
Clue 4
Multiplication facts (1-12)
Examining grids of cat scratching posts, the detective multiplies rows and columns to find where the thief dropped evidence.
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
25
8
99
12
108
A
25
120
1
108
63
110
21
24
A
25
44
49
110
12
99
24
99
120
99
8
21
66
99
80
1
44
49
5 × 5 =A
7 × 9 =O
11 × 4 =N
12 × 2 =R
6 × 11 =B
7 × 7 =D
12 × 9 =C
1 × 8 =F
1 × 1 =I
12 × 10 =L
9 × 11 =E
11 × 10 =S
4 × 3 =W
10 × 8 =H
7 × 3 =T
0/15 letters found
Clue 5
Division facts (1-12) — the last clue
The detective divides the remaining treats equally among shelter helpers to determine who was present in the hall.
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
33 ÷ 3 = ?
5 ÷ 1 = ?
60 ÷ 6 = ?
48 ÷ 6 = ?
36 ÷ 3 = ?
2 ÷ 1 = ?
3 ÷ 3 = ?
60 ÷ 10 = ?
4 ÷ 1 = ?
84 ÷ 12 = ?
72 ÷ 8 = ?
Step 2 — cross out the sentence with each answer
1.The villain snuck in with silent paws, then entangled the hallway with a yarn launcher.
2.The villain leaped over the security fence, then dropped a smelly catnip bomb.
3.The villain navigated in pitch darkness, then waved a shiny feather wand.
4.The villain leaped over the security fence, then entangled the hallway with a yarn launcher.
5.The villain pounced from the rafters, then squeaked a loud toy to confuse everyone.
6.The villain navigated in pitch darkness, then dropped a smelly catnip bomb.
7.The villain snuck in with silent paws, then squeaked a loud toy to confuse everyone.
8.The villain snuck in with silent paws, then dropped a smelly catnip bomb.
9.The villain leaped over the security fence, then distracted guards with a laser pointer.
10.The villain pounced from the rafters, then dropped a smelly catnip bomb.
11.The villain dashed along the high wall, then waved a shiny feather wand.
12.The villain dashed along the high wall, then entangled the hallway with a yarn launcher.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Diamond Collar
Culprit: Pepper Paws (Night Vision · Feather Wand · Right Paw Dominant · Calico · Loud Thunder)
- Clue 1 (Fractions of a number): "THE VILLAIN DID NOT USE A YARN LAUNCHER"3/8 of 104 = 39 (T) · 1/2 of 80 = 40 (R) · 3/6 of 4 = 2 (Y) · 5/10 of 68 = 34 (I) · 2/6 of 33 = 11 (N) · 1/8 of 104 = 13 (C) · 2/10 of 85 = 17 (D) · 5/10 of 56 = 28 (A) · 1/2 of 66 = 33 (S) · 1/4 of 96 = 24 (E) · 1/6 of 90 = 15 (H) · 4/8 of 74 = 37 (V) · 7/10 of 20 = 14 (U) · 2/5 of 65 = 26 (O) · 2/4 of 60 = 30 (L)
- Clue 2 (Word problems): "RIGHT PAW DOMINANT"Detective Whiskers lined up 2 rows of 8 grooming brushes. How many grooming brushes in all? = 16 (R) · Detective Whiskers found 27 grooming brushes yesterday and 77 more today. How many grooming brushes in all? = 104 (G) · Detective Whiskers found 8 feather toys yesterday and 78 more today. How many feather toys in all? = 86 (P) · There were 93 feather toys. 12 were used up. How many feather toys are left? = 81 (A) · Detective Whiskers lined up 7 rows of 6 catnip pouches. How many catnip pouches in all? = 42 (I) · Detective Whiskers found 4 cans of salmon yesterday and 116 more today. How many cans of salmon in all? = 120 (H) · Detective Whiskers found 48 catnip pouches yesterday and 64 more today. How many catnip pouches in all? = 112 (T)
- Clue 3 (Order of operations): "THE CULPRIT HIDES WHEN LOUD THUNDER RUMBLES"25 + 3 × 6 = 43 (T) · 15 + 8 × 6 = 63 (S) · 5 + 2 × 2 = 9 (C) · 5 × 12 - 19 = 41 (I) · 26 + 6 × 9 = 80 (L) · 6 × 11 - 6 = 60 (R) · 4 × 12 - 6 = 42 (W) · 13 + 3 × 6 = 31 (U) · 3 × 10 - 18 = 12 (B) · 9 × 10 - 16 = 74 (P) · 35 + 5 × 7 = 70 (E) · 10 × 3 - 1 = 29 (N) · 10 + 7 × 8 = 66 (O) · 7 × 6 - 9 = 33 (M) · 42 + 2 × 8 = 58 (H) · 12 + 2 × 6 = 24 (D)
- Clue 4 (Multiplication facts (1-12)): "A FEW CALICO STRANDS WERE LEFT BEHIND"5 × 5 = 25 (A) · 7 × 9 = 63 (O) · 11 × 4 = 44 (N) · 12 × 2 = 24 (R) · 6 × 11 = 66 (B) · 7 × 7 = 49 (D) · 12 × 9 = 108 (C) · 1 × 8 = 8 (F) · 1 × 1 = 1 (I) · 12 × 10 = 120 (L) · 9 × 11 = 99 (E) · 11 × 10 = 110 (S) · 4 × 3 = 12 (W) · 10 × 8 = 80 (H) · 7 × 3 = 21 (T)
- Clue 5 (Division facts (1-12)): surviving statement (box 3) → Pepper Paws33 ÷ 3 = 11 · 5 ÷ 1 = 5 · 60 ÷ 6 = 10 · 48 ÷ 6 = 8 · 36 ÷ 3 = 12 · 2 ÷ 1 = 2 · 3 ÷ 3 = 1 · 60 ÷ 10 = 6 · 4 ÷ 1 = 4 · 84 ÷ 12 = 7 · 72 ÷ 8 = 9
About this mystery
- Grade level
- Grade 5 math
- Math topics
- Fractions of a number, Word problems, Order of operations, Multiplication, Division
- Reading level
- grades 5-6
- Theme
- The Case of the Missing Diamond Collar — set in The Whiskered Manor Cat Show
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects