🔎 PuppiesGrade 1Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends
The Case of the Missing Golden Bone
A sneaky pup took the Golden Bone from the park office! Ranger Rick needs your help to find which puppy did it.
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 | Favorite Toy | Super Skill | Puppy Group | Fur Style | Distraction |
|---|---|---|---|---|---|
| Sadie | Squeaky Duck | Fast Runner | Boy Puppy | Spotted Fur | Cheese Treats |
| Rex | Red Ball | Deep Digger | Boy Puppy | Spotted Fur | Cheese Treats |
| Daisy | Red Ball | Fast Runner | Boy Puppy | Curly Fur | Cheese Treats |
| Buster | Red Ball | Fast Runner | Boy Puppy | Spotted Fur | Peanut Butter |
| Bailey | Red Ball | Fast Runner | Boy Puppy | Shaggy Fur | Belly Rubs |
| Charlie | Rope Tug | High Jumper | Boy Puppy | Spotted Fur | Belly Rubs |
| Bear | Red Ball | Water Swimmer | Girl Puppy | Curly Fur | Peanut Butter |
| Cooper | Squeaky Duck | Loud Barker | Girl Puppy | Shaggy Fur | Belly Rubs |
| Duke | Red Ball | Water Swimmer | Boy Puppy | Spotted Fur | Belly Rubs |
| Lucy | Chew Stick | Deep Digger | Boy Puppy | Spotted Fur | Belly Rubs |
| Penny | Rope Tug | High Jumper | Boy Puppy | Shaggy Fur | Cheese Treats |
| Max | Red Ball | Loud Barker | Boy Puppy | Spotted Fur | Cheese Treats |
| Lola | Blue Frisbee | Loud Barker | Boy Puppy | Spotted Fur | Cheese Treats |
| Rusty | Squeaky Duck | Deep Digger | Girl Puppy | Curly Fur | Cheese Treats |
| Coco | Red Ball | Water Swimmer | Girl Puppy | Spotted Fur | Cheese Treats |
| Rocky | Squeaky Duck | Loud Barker | Girl Puppy | Spotted Fur | Belly Rubs |
| Milo | Rope Tug | Fast Runner | Girl Puppy | Spotted Fur | Cheese Treats |
| Ginger | Rope Tug | High Jumper | Boy Puppy | Spotted Fur | Cheese Treats |
| Buddy | Squeaky Duck | Fast Runner | Boy Puppy | Shaggy Fur | Belly Rubs |
| Lucky | Red Ball | Loud Barker | Boy Puppy | Shaggy Fur | Peanut Butter |
| Zoe | Blue Frisbee | Loud Barker | Girl Puppy | Spotted Fur | Peanut Butter |
Clue 1
Addition
We count the tennis balls left by the gate. We add three green balls and four yellow balls. This sum gives us our first secret clue number.
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
20
4
7
11
6
7
10
13
19
17
16
17
9
11
6
5
T
20
10
12
7
7
17
12
9
3
3
7
18
7 + 13 =T
6 + 6 =D
9 + 7 =U
1 + 2 =G
8 + 3 =S
14 + 5 =Y
3 + 1 =H
3 + 6 =I
2 + 3 =O
7 + 11 =R
4 + 3 =E
3 + 7 =A
5 + 12 =P
5 + 8 =K
5 + 1 =N
0/15 letters found
Clue 2
Subtraction
The puppy box had ten yummy treats. Now there are only six left. We subtract to find how many treats the sneaky pup ate.
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
1
19
6
16
11
T
1
2
6
17
17
19
6
7
13
18
7
5
9
10
18
8
9
14
15
10
15
15
14
8
7
13
12
10 - 9 =T
14 - 6 =B
13 - 6 =A
18 - 3 =P
18 - 1 =S
10 - 5 =L
12 - 6 =E
19 - 1 =D
13 - 1 =K
20 - 1 =H
17 - 4 =R
18 - 8 =U
17 - 1 =W
11 - 9 =N
19 - 5 =Y
14 - 5 =O
14 - 3 =I
0/17 letters found
Clue 3
Skip counting
Look at the muddy paw prints on the path. They go by twos. We skip count by twos to find the next clue number.
Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.
S
110
35
27
15
33
25
130
45
26
26
S
110
26
35
28
26
22
35
S
110
12
27
120
120
S
110
35
50
70
35
45
27
S
110
70
30
70
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130S
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150C
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35Y
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80P
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21N
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60O
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16W
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32R
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140L
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30E
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39K
Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50U
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45T
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26A
0/16 letters found
Clue 4
Place value (tens & ones)
We find a collar with shiny stars on it. There is one group of ten stars and five single stars. What number does that make?
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
99
82
77
85
47
33
86
26
99
17
56
56
83
47
T
50
T
50
82
26
70
33
85
56
99
82
26
47
86
64
T
50
What number has 5 tens and 0 ones?T
What number has 2 tens and 6 ones?D
What number has 9 tens and 9 ones?H
What number has 1 ten and 7 ones?A
What number has 7 tens and 0 ones?F
What number has 7 tens and 7 ones?G
What number has 8 tens and 3 ones?P
What number has 4 tens and 7 ones?O
What number has 5 tens and 6 ones?S
What number has 6 tens and 4 ones?I
What number has 8 tens and 5 ones?R
What number has 3 tens and 3 ones?U
What number has 8 tens and 2 ones?E
What number has 8 tens and 6 ones?N
0/14 letters found
Clue 5
Missing addends — the last clue
The toy bin holds eight plastic bones. Right now we only see five bones. How many more bones do we need to make eight?
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
1 + ___ = 13
1 + ___ = 9
5 + ___ = 6
2 + ___ = 6
4 + ___ = 15
10 + ___ = 15
9 + ___ = 12
1 + ___ = 8
1 + ___ = 11
9 + ___ = 11
2 + ___ = 11
Step 2 — cross out the sentence with each answer
1.The villain tugs a thick yellow rope, then leaps over the park gate.
2.The villain squeaks a rubber duck, then splashes across the big pond.
3.The villain catches a shiny blue frisbee, then splashes across the big pond.
4.The villain squeaks a rubber duck, then digs a huge hole in the grass.
5.The villain bounces a red ball, then splashes across the big pond.
6.The villain catches a shiny blue frisbee, then lets out a very loud bark.
7.The villain gnaws on a wood chew stick, then digs a huge hole in the grass.
8.The villain squeaks a rubber duck, then dashes past the bench.
9.The villain gnaws on a wood chew stick, then splashes across the big pond.
10.The villain catches a shiny blue frisbee, then dashes past the bench.
11.The villain tugs a thick yellow rope, then lets out a very loud bark.
12.The villain bounces a red ball, then lets out a very loud bark.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Case of the Missing Golden Bone
Culprit: Lola (Blue Frisbee · Loud Barker · Boy Puppy · Spotted Fur · Cheese Treats)
- Clue 1 (Addition): "THE SNEAKY PUP IS NOT A DEEP DIGGER"7 + 13 = 20 (T) · 6 + 6 = 12 (D) · 9 + 7 = 16 (U) · 1 + 2 = 3 (G) · 8 + 3 = 11 (S) · 14 + 5 = 19 (Y) · 3 + 1 = 4 (H) · 3 + 6 = 9 (I) · 2 + 3 = 5 (O) · 7 + 11 = 18 (R) · 4 + 3 = 7 (E) · 3 + 7 = 10 (A) · 5 + 12 = 17 (P) · 5 + 8 = 13 (K) · 5 + 1 = 6 (N)
- Clue 2 (Subtraction): "THE WITNESS HEARD A LOUD BOY PUPPY BARK"10 - 9 = 1 (T) · 14 - 6 = 8 (B) · 13 - 6 = 7 (A) · 18 - 3 = 15 (P) · 18 - 1 = 17 (S) · 10 - 5 = 5 (L) · 12 - 6 = 6 (E) · 19 - 1 = 18 (D) · 13 - 1 = 12 (K) · 20 - 1 = 19 (H) · 17 - 4 = 13 (R) · 18 - 8 = 10 (U) · 17 - 1 = 16 (W) · 11 - 9 = 2 (N) · 19 - 5 = 14 (Y) · 14 - 5 = 9 (O) · 14 - 3 = 11 (I)
- Clue 3 (Skip counting): "STINKY CHEESE TREATS WILL STOP THIS PUP"Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (S) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (C) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (H) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, ___, 30, 35 = 25 (Y) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (P) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21 = 15 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (O) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, ___, 14, 16 = 12 (W) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (R) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (L) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (E) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (K) · Skip-count by 10s. Fill the blank: 10, 20, ___, 40, 50 = 30 (U) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (T) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (A)
- Clue 4 (Place value (tens & ones)): "THE GROUND HAS SPOTTED FUR SHED ON IT"What number has 5 tens and 0 ones? = 50 (T) · What number has 2 tens and 6 ones? = 26 (D) · What number has 9 tens and 9 ones? = 99 (H) · What number has 1 ten and 7 ones? = 17 (A) · What number has 7 tens and 0 ones? = 70 (F) · What number has 7 tens and 7 ones? = 77 (G) · What number has 8 tens and 3 ones? = 83 (P) · What number has 4 tens and 7 ones? = 47 (O) · What number has 5 tens and 6 ones? = 56 (S) · What number has 6 tens and 4 ones? = 64 (I) · What number has 8 tens and 5 ones? = 85 (R) · What number has 3 tens and 3 ones? = 33 (U) · What number has 8 tens and 2 ones? = 82 (E) · What number has 8 tens and 6 ones? = 86 (N)
- Clue 5 (Missing addends): surviving statement (box 6) → Lola1 + ___ = 13 = 12 · 1 + ___ = 9 = 8 · 5 + ___ = 6 = 1 · 2 + ___ = 6 = 4 · 4 + ___ = 15 = 11 · 10 + ___ = 15 = 5 · 9 + ___ = 12 = 3 · 1 + ___ = 8 = 7 · 1 + ___ = 11 = 10 · 9 + ___ = 11 = 2 · 2 + ___ = 11 = 9
About this mystery
- Grade level
- Grade 1 math
- Math topics
- Addition, Subtraction, Skip counting, Place value, Missing addends
- Reading level
- grades 1-2
- Theme
- The Case of the Missing Golden Bone — set in Wagging Tails Park
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects