🦕 Dinosaurs, Minecraft, CatsGrade 2Reading: grades 1-2AdditionSubtractionSkip countingPlace valueMissing addends
The Mystery of the Blocky Fossil
A sneaky thief broke into the Dino-Cat Museum. They stole the famous Fossil Fish. The museum is made of pixel blocks and dinosaur nests. Can you help us find the thief and save the fossil?
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 | Dino Skill | Minecraft Tool | Digger Hand | Coat Color | Fear |
|---|---|---|---|---|---|
| Steve | tames pixel triceratops | brews speed potions | right-pawed digger | black pixel coat | fears squeaky mice |
| Felix | rides a giant raptor | heals with raw salmon | left-pawed digger | shiny green scales | runs from raw fish |
| Blocky Bob | crafts obsidian walls | brews speed potions | right-pawed digger | black pixel coat | fears squeaky mice |
| Blue | digs with diamond picks | wears diamond boots | right-pawed digger | black pixel coat | runs from raw fish |
| Dino Dan | crafts obsidian walls | heals with raw salmon | left-pawed digger | shiny green scales | runs from raw fish |
| Slick Steve | tames pixel triceratops | brews speed potions | left-pawed digger | orange tabby fur | runs from raw fish |
| Raptor Ryan | tames pixel triceratops | wears diamond boots | right-pawed digger | black pixel coat | fears squeaky mice |
| Dino Dave | tames pixel triceratops | summons iron golems | left-pawed digger | black pixel coat | fears squeaky mice |
| Yoshi | spawns tamed ocelots | brews speed potions | left-pawed digger | shiny green scales | runs from raw fish |
| Pixel Pete | rides a giant raptor | heals with raw salmon | left-pawed digger | black pixel coat | fears squeaky mice |
| Barney | tames pixel triceratops | brews speed potions | right-pawed digger | shiny green scales | runs from raw fish |
| Rexy | spawns tamed ocelots | summons iron golems | left-pawed digger | orange tabby fur | runs from raw fish |
| Creeper Cat | tames pixel triceratops | wears diamond boots | left-pawed digger | shiny green scales | runs from raw fish |
| Meowth | rides a giant raptor | wears diamond boots | left-pawed digger | shiny green scales | runs from raw fish |
| Trixie | rides a giant raptor | brews speed potions | right-pawed digger | shiny green scales | runs from raw fish |
| Tabby Tim | digs with diamond picks | summons iron golems | left-pawed digger | shiny green scales | fears squeaky mice |
| Sylvester | crafts obsidian walls | heals with raw salmon | left-pawed digger | shiny green scales | fears squeaky mice |
| DanTDM | digs with diamond picks | heals with raw salmon | right-pawed digger | shiny green scales | runs from raw fish |
| Minecraft Sam | digs with diamond picks | heals with raw salmon | left-pawed digger | shiny green scales | runs from raw fish |
| Tom Cat | digs with diamond picks | wears diamond boots | right-pawed digger | black pixel coat | hates bucket of water |
| Pusheen | digs with diamond picks | throws splash potions | left-pawed digger | black pixel coat | fears squeaky mice |
Clue 1
Addition
We need to count the stray pixel blocks left on the grass. Add the blocks together to clear the path to 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
66
80
83
T
66
80
34
83
52
41
88
83
70
79
88
T
66
40
83
84
54
41
34
84
68
88
79
41
69
88
88
T
66
70
19 + 47 =T
43 + 27 =S
30 + 58 =O
17 + 17 =I
29 + 55 =A
45 + 34 =N
26 + 26 =F
37 + 43 =H
43 + 25 =M
44 + 25 =B
19 + 35 =R
21 + 19 =W
39 + 44 =E
22 + 19 =D
0/14 letters found
Clue 2
Subtraction
Some dinosaur eggs were moved from the nest. Subtract the missing eggs to find how many are safe. This will show us the second 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
17
40
87
T
17
40
75
87
34
68
87
34
T
17
20
61
68
86
68
87
34
T
17
65
18
24
65
63
75
61
T
17
72
39 - 22 =T
87 - 24 =R
23 - 3 =O
89 - 17 =S
86 - 11 =I
46 - 28 =A
86 - 25 =N
69 - 1 =L
32 - 8 =W
57 - 17 =H
67 - 2 =P
97 - 11 =Y
71 - 37 =F
116 - 29 =E
0/14 letters found
Clue 3
Skip counting
The blocky cat ran along the stone path. Skip count by twos on the lit blocks to track the prints and find the third 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
27
15
26
T
27
15
50
26
130
110
70
40
14
15
26
40
14
26
10
15
55
14
26
100
110
70
14
130
50
10
15
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33T
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70I
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50N
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120D
Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25H
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65O
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80A
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130R
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18W
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150F
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14S
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30E
0/12 letters found
Clue 4
Place value
The museum chest has blocks of ten and single blocks. Group them by tens and ones to unlock the fourth 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.
S
25
61
50
64
76
52
96
78
78
64
S
25
16
12
62
78
S
25
97
78
96
78
62
78
21
30
50
64
30
61
78
31
74
41
What number has 2 tens and 5 ones?S
What number has 3 tens and 1 one?M
What number has 6 tens and 1 one?H
What number has 7 tens and 8 ones?E
What number has 9 tens and 7 ones?W
What number has 6 tens and 4 ones?N
What number has 2 tens and 1 one?F
What number has 4 tens and 1 one?D
What number has 3 tens and 0 ones?T
What number has 9 tens and 6 ones?R
What number has 1 ten and 2 ones?A
What number has 5 tens and 2 ones?G
What number has 7 tens and 6 ones?Y
What number has 5 tens and 0 ones?I
What number has 1 ten and 6 ones?C
What number has 7 tens and 4 ones?U
What number has 6 tens and 2 ones?L
0/17 letters found
Clue 5
Missing addends — the last clue
We have some fish in the box but we need more to fill it. Find the missing number of fish to get the final clue.
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
8 + ___ = 16
5 + ___ = 10
5 + ___ = 17
4 + ___ = 5
4 + ___ = 11
1 + ___ = 4
2 + ___ = 13
3 + ___ = 9
7 + ___ = 11
2 + ___ = 11
4 + ___ = 6
Step 2 — cross out the sentence with each answer
1.The villain rode a raptor through the museum, then left blue diamond boot prints.
2.The villain rode a raptor through the museum, then threw a splash potion.
3.The villain rode a raptor through the museum, then built a giant iron golem.
4.The villain called a big triceratops, then drank a fast speed potion.
5.The villain rode a raptor through the museum, then ate a raw salmon block.
6.The villain spawned ten ocelots, then left blue diamond boot prints.
7.The villain called a big triceratops, then threw a splash potion.
8.The villain built an obsidian wall, then ate a raw salmon block.
9.The villain dug down with a diamond pick, then drank a fast speed potion.
10.The villain dug down with a diamond pick, then ate a raw salmon block.
11.The villain dug down with a diamond pick, then threw a splash potion.
12.The villain spawned ten ocelots, then drank a fast speed potion.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Blocky Fossil
Culprit: Minecraft Sam (digs with diamond picks · heals with raw salmon · left-pawed digger · shiny green scales · runs from raw fish)
- Clue 1 (Addition): "THE THIEF DOES NOT WEAR DIAMOND BOOTS"19 + 47 = 66 (T) · 43 + 27 = 70 (S) · 30 + 58 = 88 (O) · 17 + 17 = 34 (I) · 29 + 55 = 84 (A) · 45 + 34 = 79 (N) · 26 + 26 = 52 (F) · 37 + 43 = 80 (H) · 43 + 25 = 68 (M) · 44 + 25 = 69 (B) · 19 + 35 = 54 (R) · 21 + 19 = 40 (W) · 39 + 44 = 83 (E) · 22 + 19 = 41 (D)
- Clue 2 (Subtraction): "THE THIEF LEFT ONLY LEFT PAW PRINTS"39 - 22 = 17 (T) · 87 - 24 = 63 (R) · 23 - 3 = 20 (O) · 89 - 17 = 72 (S) · 86 - 11 = 75 (I) · 46 - 28 = 18 (A) · 86 - 25 = 61 (N) · 69 - 1 = 68 (L) · 32 - 8 = 24 (W) · 57 - 17 = 40 (H) · 67 - 2 = 65 (P) · 97 - 11 = 86 (Y) · 71 - 37 = 34 (F) · 116 - 29 = 87 (E)
- Clue 3 (Skip counting): "THE THIEF RAN WHEN WE SHOWED RAW FISH"Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (T) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70 = 50 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50 = 40 (N) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, ___, 110, 120 = 100 (D) · Skip-count by 5s. Fill the blank: 5, 10, ___, 20, 25 = 15 (H) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (O) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (A) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (R) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (W) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (F) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, ___, 12, 14 = 10 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (E)
- Clue 4 (Place value): "SHINY GREEN SCALES WERE LEFT IN THE MUD"What number has 2 tens and 5 ones? = 25 (S) · What number has 3 tens and 1 one? = 31 (M) · What number has 6 tens and 1 one? = 61 (H) · What number has 7 tens and 8 ones? = 78 (E) · What number has 9 tens and 7 ones? = 97 (W) · What number has 6 tens and 4 ones? = 64 (N) · What number has 2 tens and 1 one? = 21 (F) · What number has 4 tens and 1 one? = 41 (D) · What number has 3 tens and 0 ones? = 30 (T) · What number has 9 tens and 6 ones? = 96 (R) · What number has 1 ten and 2 ones? = 12 (A) · What number has 5 tens and 2 ones? = 52 (G) · What number has 7 tens and 6 ones? = 76 (Y) · What number has 5 tens and 0 ones? = 50 (I) · What number has 1 ten and 6 ones? = 16 (C) · What number has 7 tens and 4 ones? = 74 (U) · What number has 6 tens and 2 ones? = 62 (L)
- Clue 5 (Missing addends): surviving statement (box 10) → Minecraft Sam8 + ___ = 16 = 8 · 5 + ___ = 10 = 5 · 5 + ___ = 17 = 12 · 4 + ___ = 5 = 1 · 4 + ___ = 11 = 7 · 1 + ___ = 4 = 3 · 2 + ___ = 13 = 11 · 3 + ___ = 9 = 6 · 7 + ___ = 11 = 4 · 2 + ___ = 11 = 9 · 4 + ___ = 6 = 2
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Subtraction, Skip counting, Place value, Missing addends
- Reading level
- grades 1-2
- Theme
- The Mystery of the Blocky Fossil — set in Dino-Cat Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects