🦕 DinosaursGrade 2Reading: grades 1-2AdditionSubtractionWord problemsMulti-step word problemsMissing addends
The Golden Fossil Caper
A sneaky thief took the golden fossil from the Dino Valley Camp. We need to find which dino tracker is the thief!
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 | Main Dino Move | Special Gear | Claw Print | Dino Feature | Dino Distraction |
|---|---|---|---|---|---|
| Tim | Tricera smash | loud roar | right clawed | red feathers | shiny flash |
| Owen | Ptera glide | night vision | left clawed | blue crest | loud whistle |
| Maisie | Ptera glide | armor plate | left clawed | green scales | loud whistle |
| Webb | Raptor dash | night vision | left clawed | blue crest | sweet berry |
| Barnum | Raptor dash | night vision | left clawed | green scales | loud whistle |
| Rex | Spino swim | super sniff | left clawed | blue crest | sweet berry |
| Nedry | Raptor dash | night vision | right clawed | red feathers | shiny flash |
| Alan | Ptera glide | night vision | right clawed | green scales | loud whistle |
| Ellie | T-Rex stomp | night vision | right clawed | blue crest | loud whistle |
| Cope | Raptor dash | super sniff | left clawed | green scales | loud whistle |
| Spike | Spino swim | heat sensor | right clawed | green scales | loud whistle |
| Anning | Ptera glide | night vision | right clawed | red feathers | sweet berry |
| Ian | Ptera glide | night vision | left clawed | red feathers | loud whistle |
| Ducky | T-Rex stomp | super sniff | left clawed | green scales | loud whistle |
| Lex | Spino swim | super sniff | left clawed | green scales | shiny flash |
| Sarah | Raptor dash | loud roar | left clawed | green scales | loud whistle |
| Petrie | T-Rex stomp | heat sensor | left clawed | red feathers | loud whistle |
| Cera | Ptera glide | super sniff | left clawed | green scales | shiny flash |
| Wu | Tricera smash | heat sensor | left clawed | blue crest | loud whistle |
| Grant | Spino swim | loud roar | left clawed | blue crest | loud whistle |
| Malcolm | Raptor dash | super sniff | right clawed | red feathers | sweet berry |
Clue 1
Addition
We count the footprints near the camp. Let us add the big tracks and small tracks together 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
62
67
51
T
62
67
55
51
88
59
61
51
93
53
61
T
62
67
26
77
51
26
22
27
61
22
94
37
26
T
62
51
93
28 + 34 =T
19 + 8 =M
19 + 32 =E
16 + 10 =A
40 + 37 =V
20 + 47 =H
46 + 47 =S
35 + 20 =I
34 + 27 =O
42 + 46 =F
29 + 24 =N
16 + 6 =R
21 + 16 =L
58 + 36 =P
23 + 36 =D
0/15 letters found
Clue 2
Subtraction
A box of dino treats was opened. We must subtract the eaten treats from the total to see what is left.
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
28
63
18
75
75
13
21
44
28
T
17
28
21
63
18
14
44
63
41
T
17
28
63
21
58
13
63
18
T
17
57
13
64
26
53 - 36 =T
36 - 8 =H
40 - 26 =U
71 - 30 =D
89 - 14 =O
69 - 11 =R
85 - 28 =C
29 - 16 =L
69 - 6 =E
58 - 14 =S
88 - 24 =A
60 - 34 =W
41 - 20 =I
23 - 5 =F
0/14 letters found
Clue 3
Word problems
The camp team needs to share their walkie talkies. Solve this word problem to get the next hint.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Someonescaredthevillainoffwith .
L
18
38
21
24
20
27
37
S
T
L
18
E
Ranger Rex lined up 2 rows of 9 dino treats. How many dino treats in all?L
There were 37 shiny rocks. 10 were used up. How many shiny rocks are left?H
Ranger Rex lined up 7 rows of 3 fossil brushes. How many fossil brushes in all?U
There were 29 fossil brushes. 9 were used up. How many fossil brushes are left?W
Ranger Rex found 32 shiny rocks yesterday and 6 more today. How many shiny rocks in all?O
Ranger Rex found 33 dig shovels yesterday and 4 more today. How many dig shovels in all?I
Ranger Rex lined up 4 rows of 6 fossil brushes. How many fossil brushes in all?D
0/7 letters found
Clue 4
Multi-step word problems
A ranger finds some lost tools and then drops a few on the trail. Let us do the steps to see the total.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Astrandof hairturnedupatthescene.
G
27
32
29
29
6
12
7
23
L
29
12
Ranger Rex collected 54 toy trackers in the morning and 54 toy trackers in the afternoon, then split them equally among 4 Dino Patrol. How many toy trackers did each get?G
There were 155 fossil brushes in all. 35 fossil brushes were set aside. The rest were shared equally among 10 Dino Patrol. How many fossil brushes did each get?S
Ranger Rex earned 3 dino treats in each of 6 rounds, plus 14 bonus dino treats. Then 9 dino treats were lost. How many dino treats are left?A
Ranger Rex earned 4 dino treats in each of 5 rounds, plus 17 bonus dino treats. Then 5 dino treats were lost. How many dino treats are left?R
Ranger Rex earned 2 fossil brushes in each of 6 rounds, plus 32 bonus fossil brushes. Then 15 fossil brushes were lost. How many fossil brushes are left?E
Ranger Rex collected 8 dino treats in the morning and 34 dino treats in the afternoon, then split them equally among 6 Dino Patrol. How many dino treats did each get?C
There were 62 fossil brushes in all. 8 fossil brushes were set aside. The rest were shared equally among 9 Dino Patrol. How many fossil brushes did each get?N
0/7 letters found
Clue 5
Missing addends — the last clue
We need ten cups of fossil dust to finish our test. Find the missing number of cups to unlock 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
4 + ___ = 7
3 + ___ = 14
8 + ___ = 10
6 + ___ = 10
9 + ___ = 15
8 + ___ = 16
4 + ___ = 13
7 + ___ = 19
9 + ___ = 16
5 + ___ = 15
7 + ___ = 8
Step 2 — cross out the sentence with each answer
1.The villain runs fast with a raptor dash, then finds targets with a heat sensor.
2.The villain runs fast with a raptor dash, then looks around with night vision.
3.The villain runs fast with a raptor dash, then scares everyone with a loud roar.
4.The villain breaks the wall with a tricera smash, then scares everyone with a loud roar.
5.The villain shakes the ground with a t-rex stomp, then tracks scents with a super sniff.
6.The villain shakes the ground with a t-rex stomp, then looks around with night vision.
7.The villain escapes with a spino swim, then blocks traps with an armor plate.
8.The villain escapes with a spino swim, then finds targets with a heat sensor.
9.The villain escapes with a spino swim, then looks around with night vision.
10.The villain breaks the wall with a tricera smash, then tracks scents with a super sniff.
11.The villain runs fast with a raptor dash, then tracks scents with a super sniff.
12.The villain shakes the ground with a t-rex stomp, then scares everyone with a loud roar.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Golden Fossil Caper
Culprit: Ducky (T-Rex stomp · super sniff · left clawed · green scales · loud whistle)
- Clue 1 (Addition): "THE THIEF DOES NOT HAVE ARMOR PLATES"28 + 34 = 62 (T) · 19 + 8 = 27 (M) · 19 + 32 = 51 (E) · 16 + 10 = 26 (A) · 40 + 37 = 77 (V) · 20 + 47 = 67 (H) · 46 + 47 = 93 (S) · 35 + 20 = 55 (I) · 34 + 27 = 61 (O) · 42 + 46 = 88 (F) · 29 + 24 = 53 (N) · 16 + 6 = 22 (R) · 21 + 16 = 37 (L) · 58 + 36 = 94 (P) · 23 + 36 = 59 (D)
- Clue 2 (Subtraction): "THE FOOLISH THIEF USED THEIR LEFT CLAW"53 - 36 = 17 (T) · 36 - 8 = 28 (H) · 40 - 26 = 14 (U) · 71 - 30 = 41 (D) · 89 - 14 = 75 (O) · 69 - 11 = 58 (R) · 85 - 28 = 57 (C) · 29 - 16 = 13 (L) · 69 - 6 = 63 (E) · 58 - 14 = 44 (S) · 88 - 24 = 64 (A) · 60 - 34 = 26 (W) · 41 - 20 = 21 (I) · 23 - 5 = 18 (F)
- Clue 3 (Word problems): "LOUD WHISTLE"Ranger Rex lined up 2 rows of 9 dino treats. How many dino treats in all? = 18 (L) · There were 37 shiny rocks. 10 were used up. How many shiny rocks are left? = 27 (H) · Ranger Rex lined up 7 rows of 3 fossil brushes. How many fossil brushes in all? = 21 (U) · There were 29 fossil brushes. 9 were used up. How many fossil brushes are left? = 20 (W) · Ranger Rex found 32 shiny rocks yesterday and 6 more today. How many shiny rocks in all? = 38 (O) · Ranger Rex found 33 dig shovels yesterday and 4 more today. How many dig shovels in all? = 37 (I) · Ranger Rex lined up 4 rows of 6 fossil brushes. How many fossil brushes in all? = 24 (D)
- Clue 4 (Multi-step word problems): "GREEN SCALES"Ranger Rex collected 54 toy trackers in the morning and 54 toy trackers in the afternoon, then split them equally among 4 Dino Patrol. How many toy trackers did each get? = 27 (G) · There were 155 fossil brushes in all. 35 fossil brushes were set aside. The rest were shared equally among 10 Dino Patrol. How many fossil brushes did each get? = 12 (S) · Ranger Rex earned 3 dino treats in each of 6 rounds, plus 14 bonus dino treats. Then 9 dino treats were lost. How many dino treats are left? = 23 (A) · Ranger Rex earned 4 dino treats in each of 5 rounds, plus 17 bonus dino treats. Then 5 dino treats were lost. How many dino treats are left? = 32 (R) · Ranger Rex earned 2 fossil brushes in each of 6 rounds, plus 32 bonus fossil brushes. Then 15 fossil brushes were lost. How many fossil brushes are left? = 29 (E) · Ranger Rex collected 8 dino treats in the morning and 34 dino treats in the afternoon, then split them equally among 6 Dino Patrol. How many dino treats did each get? = 7 (C) · There were 62 fossil brushes in all. 8 fossil brushes were set aside. The rest were shared equally among 9 Dino Patrol. How many fossil brushes did each get? = 6 (N)
- Clue 5 (Missing addends): surviving statement (box 5) → Ducky4 + ___ = 7 = 3 · 3 + ___ = 14 = 11 · 8 + ___ = 10 = 2 · 6 + ___ = 10 = 4 · 9 + ___ = 15 = 6 · 8 + ___ = 16 = 8 · 4 + ___ = 13 = 9 · 7 + ___ = 19 = 12 · 9 + ___ = 16 = 7 · 5 + ___ = 15 = 10 · 7 + ___ = 8 = 1
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Addition, Subtraction, Word problems, Multi-step word problems, Missing addends
- Reading level
- grades 1-2
- Theme
- The Golden Fossil Caper — set in Dino Valley Research Camp
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects