🐱 CatsGrade 2Reading: grades 1-2AdditionSkip countingSubtractionPlace valueMissing addends
The Case of the Missing Catnip Trophy
Someone snuck into Whisker Haven and swiped the Golden Catnip Trophy! Help Detective Barnaby find the sneaky cat before naptime.
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 | Special Skill | Favorite Toy | Collar Bell | Fur Pattern | Secret Fear |
|---|---|---|---|---|---|
| Oliver | Fast Dash | Shiny Ribbon | Silent Collar | Sleek Black | Loud Vacuum |
| Shadow | Fast Dash | Silver Bell | Silent Collar | Orange Tabby | Loud Vacuum |
| Penny | High Jump | Silver Bell | Silent Collar | Orange Tabby | Spray Bottle |
| Bandit | Fast Dash | Feather Wand | Jingle Bell | Calico Patches | Spray Bottle |
| Whiskers | Super Purr | Catnip Mouse | Jingle Bell | Calico Patches | Squeaky Toy |
| Luna | Super Purr | Laser Pointer | Jingle Bell | Sleek Black | Spray Bottle |
| Simba | Super Purr | Shiny Ribbon | Silent Collar | Calico Patches | Spray Bottle |
| Smokey | Fast Dash | Silver Bell | Silent Collar | Sleek Black | Loud Vacuum |
| Tiger | Night Vision | Laser Pointer | Jingle Bell | Orange Tabby | Loud Vacuum |
| Milo | Fast Dash | Shiny Ribbon | Jingle Bell | Orange Tabby | Spray Bottle |
| Cleo | Fast Dash | Catnip Mouse | Silent Collar | Orange Tabby | Spray Bottle |
| Bella | Fast Dash | Catnip Mouse | Jingle Bell | Orange Tabby | Loud Vacuum |
| Peanut | Super Purr | Silver Bell | Silent Collar | Orange Tabby | Squeaky Toy |
| Barnaby | Soft Paws | Silver Bell | Silent Collar | Sleek Black | Loud Vacuum |
| Mittens | Soft Paws | Silver Bell | Silent Collar | Orange Tabby | Spray Bottle |
| Felix | Night Vision | Shiny Ribbon | Silent Collar | Calico Patches | Spray Bottle |
| Ziggy | Soft Paws | Shiny Ribbon | Jingle Bell | Orange Tabby | Spray Bottle |
| Hazel | Super Purr | Silver Bell | Jingle Bell | Calico Patches | Squeaky Toy |
| Jasper | High Jump | Catnip Mouse | Jingle Bell | Sleek Black | Loud Vacuum |
| Socks | High Jump | Laser Pointer | Silent Collar | Orange Tabby | Spray Bottle |
| Pumpkin | Fast Dash | Feather Wand | Silent Collar | Orange Tabby | Spray Bottle |
Clue 1
Addition
Barnaby counts up the cat treats left on two trays to find the first clue.
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
68
28
27
50
55
27
73
81
39
80
73
T
68
83
88
27
50
55
88
T
68
72
26
73
39
23
40
T
68
28
38
27
73
T
68
28
27
94
23
73
55
83
39 + 29 =T
10 + 16 =L
28 + 11 =Y
12 + 11 =W
35 + 48 =D
35 + 15 =S
21 + 52 =A
19 + 36 =N
9 + 18 =E
27 + 45 =P
50 + 38 =O
31 + 63 =R
11 + 27 =F
13 + 27 =I
36 + 45 =K
18 + 10 =H
53 + 27 =C
0/17 letters found
Clue 2
Skip counting
We skip count the paw prints in groups of five along the muddy path.
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
27
40
130
26
35
26
33
130
65
T
27
45
28
36
130
60
42
80
T
27
40
28
35
T
27
45
39
20
80
120
12
39
26
28
35
120
60
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33T
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32O
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16G
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140N
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39P
Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60H
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24K
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42V
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45U
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45A
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150E
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75C
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70D
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48W
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55M
0/17 letters found
Clue 3
Subtraction
The keeper takes away the stolen cat toys from the box to see what is missing.
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
50
65
15
70
53
T
50
17
53
46
53
56
53
13
49
17
29
33
56
53
T
50
15
17
85
82
17
53
13
86 - 36 =T
58 - 5 =A
45 - 30 =E
59 - 30 =O
50 - 33 =R
84 - 28 =W
78 - 8 =C
101 - 36 =H
65 - 16 =F
93 - 8 =S
48 - 15 =M
83 - 1 =P
78 - 32 =N
26 - 13 =Y
0/14 letters found
Clue 4
Place value
The digital scale shows the cat food weight in tens and 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.
O
85
67
63
36
21
78
82
24
67
97
63
39
22
78
82
64
O
85
36
64
46
78
64
67
O
85
14
46
81
94
63
39
78
What number has 8 tens and 5 ones?O
What number has 8 tens and 2 ones?F
What number has 4 tens and 6 ones?H
What number has 2 tens and 2 ones?L
What number has 2 tens and 4 ones?U
What number has 3 tens and 6 ones?N
What number has 9 tens and 7 ones?W
What number has 6 tens and 7 ones?R
What number has 7 tens and 8 ones?E
What number has 6 tens and 3 ones?A
What number has 2 tens and 1 one?G
What number has 1 ten and 4 ones?P
What number has 8 tens and 1 one?Y
What number has 3 tens and 9 ones?S
What number has 9 tens and 4 ones?C
What number has 6 tens and 4 ones?T
0/16 letters found
Clue 5
Missing addends — the last clue
We fill the treat jar to find out how many pieces are still needed.
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
10 + ___ = 22
10 + ___ = 19
7 + ___ = 8
5 + ___ = 8
7 + ___ = 13
1 + ___ = 11
1 + ___ = 6
1 + ___ = 12
9 + ___ = 17
3 + ___ = 10
7 + ___ = 11
Step 2 — cross out the sentence with each answer
1.The villain leaped over the high fence, then chased the laser pointer.
2.The villain dashed across the lawn, then swiped the catnip mouse.
3.The villain purred very softly, then grabbed the feather wand.
4.The villain sneaked through the dark, then shook the silver bell.
5.The villain leaped over the high fence, then swiped the catnip mouse.
6.The villain dashed across the lawn, then grabbed the feather wand.
7.The villain leaped over the high fence, then untangled the shiny ribbon.
8.The villain sneaked through the dark, then chased the laser pointer.
9.The villain walked on soft paws, then shook the silver bell.
10.The villain purred very softly, then shook the silver bell.
11.The villain purred very softly, then untangled the shiny ribbon.
12.The villain leaped over the high fence, then shook the silver bell.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Catnip Trophy
Culprit: Cleo (Fast Dash · Catnip Mouse · Silent Collar · Orange Tabby · Spray Bottle)
- Clue 1 (Addition): "THE SNEAKY CAT DOES NOT PLAY WITH FEATHER WAND"39 + 29 = 68 (T) · 10 + 16 = 26 (L) · 28 + 11 = 39 (Y) · 12 + 11 = 23 (W) · 35 + 48 = 83 (D) · 35 + 15 = 50 (S) · 21 + 52 = 73 (A) · 19 + 36 = 55 (N) · 9 + 18 = 27 (E) · 27 + 45 = 72 (P) · 50 + 38 = 88 (O) · 31 + 63 = 94 (R) · 11 + 27 = 38 (F) · 13 + 27 = 40 (I) · 36 + 45 = 81 (K) · 18 + 10 = 28 (H) · 53 + 27 = 80 (C)
- Clue 2 (Skip counting): "THE SUSPECT MOVED WITHOUT MAKING A SOUND"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (O) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16 = 12 (G) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (N) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (P) · Skip-count by 10s. Fill the blank: 10, 20, 30, ___, 50, 60 = 40 (H) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24 = 20 (K) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, ___, 39, 42 = 36 (V) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (U) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (E) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, ___, 90, 100 = 80 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, ___, 70, 75 = 65 (C) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, ___, 65, 70 = 60 (D) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (W) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (M)
- Clue 3 (Subtraction): "THE CAT RAN AWAY FROM WATER SPRAY"86 - 36 = 50 (T) · 58 - 5 = 53 (A) · 45 - 30 = 15 (E) · 59 - 30 = 29 (O) · 50 - 33 = 17 (R) · 84 - 28 = 56 (W) · 78 - 8 = 70 (C) · 101 - 36 = 65 (H) · 65 - 16 = 49 (F) · 93 - 8 = 85 (S) · 48 - 15 = 33 (M) · 83 - 1 = 82 (P) · 78 - 32 = 46 (N) · 26 - 13 = 13 (Y)
- Clue 4 (Place value): "ORANGE FUR WAS LEFT ON THE TROPHY CASE"What number has 8 tens and 5 ones? = 85 (O) · What number has 8 tens and 2 ones? = 82 (F) · What number has 4 tens and 6 ones? = 46 (H) · What number has 2 tens and 2 ones? = 22 (L) · What number has 2 tens and 4 ones? = 24 (U) · What number has 3 tens and 6 ones? = 36 (N) · What number has 9 tens and 7 ones? = 97 (W) · What number has 6 tens and 7 ones? = 67 (R) · What number has 7 tens and 8 ones? = 78 (E) · What number has 6 tens and 3 ones? = 63 (A) · What number has 2 tens and 1 one? = 21 (G) · What number has 1 ten and 4 ones? = 14 (P) · What number has 8 tens and 1 one? = 81 (Y) · What number has 3 tens and 9 ones? = 39 (S) · What number has 9 tens and 4 ones? = 94 (C) · What number has 6 tens and 4 ones? = 64 (T)
- Clue 5 (Missing addends): surviving statement (box 2) → Cleo10 + ___ = 22 = 12 · 10 + ___ = 19 = 9 · 7 + ___ = 8 = 1 · 5 + ___ = 8 = 3 · 7 + ___ = 13 = 6 · 1 + ___ = 11 = 10 · 1 + ___ = 6 = 5 · 1 + ___ = 12 = 11 · 9 + ___ = 17 = 8 · 3 + ___ = 10 = 7 · 7 + ___ = 11 = 4
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Skip counting, Subtraction, Place value, Missing addends
- Reading level
- grades 1-2
- Theme
- The Case of the Missing Catnip Trophy — set in Whisker Haven Cat Park
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects