Grade 2Reading: grades 3-4MultiplicationWord problemsSkip countingPlace valueMissing addends
The Mystery of the Lost Temple Key
The Adventure Club just arrived at the ancient temple, but someone has swiped the Golden Sun Key! Without it, the temple doors will stay locked forever. The muddy footprints are fresh, and the culprit left behind a trail of clues. Grab your spygear and help us crack the case!
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 | Specialist Gear | Animal Partner | Writing Style | Hair Color | Biggest Fear |
|---|---|---|---|---|---|
| Diego | Grappling Hook | Pet Monkey | Left-handed notepad | Black Curly Hair | Scared of cold water |
| Zelda | Grappling Hook | Pet Parrot | Right-handed holster | Black Curly Hair | Scared of loud noises |
| Nellie | Night Binoculars | Pet Iguana | Left-handed notepad | Brown Spiky Hair | Scared of loud noises |
| Steve | Pocket Compass | Pet Falcon | Left-handed notepad | Blonde Ponytail | Scared of bright lights |
| Amelia | Night Binoculars | Pet Falcon | Right-handed holster | Brown Spiky Hair | Scared of bright lights |
| Indiana | Pocket Compass | Pet Monkey | Right-handed holster | Blonde Ponytail | Scared of cold water |
| Wendy | Grappling Hook | Pet Iguana | Left-handed notepad | Blonde Ponytail | Scared of loud noises |
| Lara | Night Binoculars | Pet Falcon | Right-handed holster | Blonde Ponytail | Scared of bright lights |
| Annie | Grappling Hook | Pet Ferret | Left-handed notepad | Blonde Ponytail | Scared of bright lights |
| Hudson | Sturdy Machete | Pet Ferret | Right-handed holster | Blonde Ponytail | Scared of cold water |
| Arthur | Highbeam Flashlight | Pet Monkey | Right-handed holster | Blonde Ponytail | Scared of loud noises |
| Cleo | Grappling Hook | Pet Monkey | Left-handed notepad | Blonde Ponytail | Scared of bright lights |
| Wyatt | Grappling Hook | Pet Falcon | Left-handed notepad | Blonde Ponytail | Scared of bright lights |
| Freya | Night Binoculars | Pet Iguana | Right-handed holster | Black Curly Hair | Scared of loud noises |
| Leo | Sturdy Machete | Pet Ferret | Left-handed notepad | Brown Spiky Hair | Scared of cold water |
| Bessie | Pocket Compass | Pet Iguana | Right-handed holster | Blonde Ponytail | Scared of bright lights |
| Nancy | Sturdy Machete | Pet Monkey | Right-handed holster | Black Curly Hair | Scared of bright lights |
| Alex | Pocket Compass | Pet Monkey | Left-handed notepad | Blonde Ponytail | Scared of loud noises |
| Marco | Grappling Hook | Pet Parrot | Left-handed notepad | Blonde Ponytail | Scared of bright lights |
| Toby | Night Binoculars | Pet Parrot | Left-handed notepad | Black Curly Hair | Scared of bright lights |
| Jacques | Sturdy Machete | Pet Iguana | Right-handed holster | Black Curly Hair | Scared of bright lights |
Clue 1
Multiplication facts (1-12)
We found the supply crates stacked in neat rows. We can multiply the rows to find how many we have 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
27
55
108
60
11
108
110
48
14
T
27
55
121
108
64
70
30
108
60
11
30
T
27
55
110
72
108
110
44
108
T
27
64
108
96
96
108
T
27
3 × 9 =T
11 × 4 =P
12 × 8 =R
10 × 7 =D
1 × 11 =N
11 × 5 =H
6 × 10 =S
8 × 6 =K
10 × 3 =O
10 × 11 =A
8 × 8 =F
11 × 11 =I
8 × 9 =V
2 × 7 =Y
9 × 12 =E
0/15 letters found
Clue 2
Word problems
Explorer Jack needs to pack his backpack. We must solve these word problems to figure out what gear is missing.
Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.
Awitnesssawthevillainwas .
L
32
14
10
34
23
39
18
D
14
D
18
O
34
14
P
39
D
Explorer Jack lined up 8 rows of 4 flashlights. How many flashlights in all?L
Explorer Jack found 14 canteens yesterday and 25 more today. How many canteens in all?A
Explorer Jack found 10 canteens yesterday and 4 more today. How many canteens in all?E
There were 13 ropes. 3 were used up. How many ropes are left?F
Explorer Jack found 17 canteens yesterday and 17 more today. How many canteens in all?T
Explorer Jack lined up 6 rows of 3 gold coins. How many gold coins in all?N
Explorer Jack found 14 gold coins yesterday and 9 more today. How many gold coins in all?H
0/7 letters found
Clue 3
Skip counting
To cross the dangerous swamp, we must step on every fifth stone. Skip count to find the safe 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
9
14
42
6
39
21
24
21
12
21
6
26
39
50
60
33
39
45
15
14
T
9
26
140
21
28
14
140
45
15
14
T
9
28
Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15T
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21G
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30N
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30F
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39B
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160L
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18H
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48E
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80M
Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10Y
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27A
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32S
Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70O
Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18W
Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55I
Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45R
0/16 letters found
Clue 4
Place value
The ancient stone chest has a three-digit combination lock. We need to check the hundreds, 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.
B
56
16
85
68
48
64
77
72
66
28
32
15
28
72
68
48
32
85
68
15
77
64
28
85
38
64
What number has 5 tens and 6 ones?B
What number has 7 tens and 2 ones?A
What number has 4 tens and 8 ones?D
What number has 3 tens and 2 ones?S
What number has 1 ten and 6 ones?L
What number has 6 tens and 6 ones?I
What number has 6 tens and 4 ones?E
What number has 7 tens and 7 ones?H
What number has 1 ten and 5 ones?T
What number has 2 tens and 8 ones?R
What number has 3 tens and 8 ones?P
What number has 6 tens and 8 ones?N
What number has 8 tens and 5 ones?O
0/13 letters found
Clue 5
Missing addends — the last clue
The weight scale on the altar is off balance. We need to find the missing weight 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
1 + ___ = 6
5 + ___ = 16
5 + ___ = 15
7 + ___ = 8
5 + ___ = 12
5 + ___ = 9
6 + ___ = 14
7 + ___ = 9
5 + ___ = 14
4 + ___ = 7
6 + ___ = 18
Step 2 — cross out the sentence with each answer
1.The villain swings on a wild vine, then grabs the silver skull.
2.The villain climbs the high ruins, then takes the jade beetle.
3.The villain paddles the fast river, then steals the ruby monkey.
4.The villain decodes the ancient map, then swipes the golden compass.
5.The villain climbs the high ruins, then swipes the golden compass.
6.The villain climbs the high ruins, then steals the ruby monkey.
7.The villain decodes the ancient map, then grabs the silver skull.
8.The villain paddles the fast river, then snatches the emerald crown.
9.The villain opens the secret vault, then takes the jade beetle.
10.The villain climbs the high ruins, then snatches the emerald crown.
11.The villain opens the secret vault, then snatches the emerald crown.
12.The villain paddles the fast river, then takes the jade beetle.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Mystery of the Lost Temple Key
Culprit: Cleo (Grappling Hook · Pet Monkey · Left-handed notepad · Blonde Ponytail · Scared of bright lights)
- Clue 1 (Multiplication facts (1-12)): "THE SNEAKY THIEF DOES NOT HAVE A PET FERRET"3 × 9 = 27 (T) · 11 × 4 = 44 (P) · 12 × 8 = 96 (R) · 10 × 7 = 70 (D) · 1 × 11 = 11 (N) · 11 × 5 = 55 (H) · 6 × 10 = 60 (S) · 8 × 6 = 48 (K) · 10 × 3 = 30 (O) · 10 × 11 = 110 (A) · 8 × 8 = 64 (F) · 11 × 11 = 121 (I) · 8 × 9 = 72 (V) · 2 × 7 = 14 (Y) · 9 × 12 = 108 (E)
- Clue 2 (Word problems): "LEFT HANDED NOTEPAD"Explorer Jack lined up 8 rows of 4 flashlights. How many flashlights in all? = 32 (L) · Explorer Jack found 14 canteens yesterday and 25 more today. How many canteens in all? = 39 (A) · Explorer Jack found 10 canteens yesterday and 4 more today. How many canteens in all? = 14 (E) · There were 13 ropes. 3 were used up. How many ropes are left? = 10 (F) · Explorer Jack found 17 canteens yesterday and 17 more today. How many canteens in all? = 34 (T) · Explorer Jack lined up 6 rows of 3 gold coins. How many gold coins in all? = 18 (N) · Explorer Jack found 14 gold coins yesterday and 9 more today. How many gold coins in all? = 23 (H)
- Clue 3 (Skip counting): "THEY RAN AWAY FROM BRIGHT FLASHLIGHTS"Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (T) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21 = 15 (G) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, ___, 27, 30 = 24 (N) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, ___, 28, 30 = 26 (F) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (B) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (L) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (H) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (E) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, ___, 70, 80 = 60 (M) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (Y) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, ___, 24, 27 = 21 (A) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, ___, 30, 32 = 28 (S) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, ___, 60, 70 = 50 (O) · Skip-count by 3s. Fill the blank: 3, 6, 9, ___, 15, 18 = 12 (W) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, ___, 50, 55 = 45 (I) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, ___, 42, 45 = 39 (R)
- Clue 4 (Place value): "BLONDE HAIR STRANDS ON THE ROPE"What number has 5 tens and 6 ones? = 56 (B) · What number has 7 tens and 2 ones? = 72 (A) · What number has 4 tens and 8 ones? = 48 (D) · What number has 3 tens and 2 ones? = 32 (S) · What number has 1 ten and 6 ones? = 16 (L) · What number has 6 tens and 6 ones? = 66 (I) · What number has 6 tens and 4 ones? = 64 (E) · What number has 7 tens and 7 ones? = 77 (H) · What number has 1 ten and 5 ones? = 15 (T) · What number has 2 tens and 8 ones? = 28 (R) · What number has 3 tens and 8 ones? = 38 (P) · What number has 6 tens and 8 ones? = 68 (N) · What number has 8 tens and 5 ones? = 85 (O)
- Clue 5 (Missing addends): surviving statement (box 6) → Cleo1 + ___ = 6 = 5 · 5 + ___ = 16 = 11 · 5 + ___ = 15 = 10 · 7 + ___ = 8 = 1 · 5 + ___ = 12 = 7 · 5 + ___ = 9 = 4 · 6 + ___ = 14 = 8 · 7 + ___ = 9 = 2 · 5 + ___ = 14 = 9 · 4 + ___ = 7 = 3 · 6 + ___ = 18 = 12
About this mystery
- Grade level
- Grade 2 math
- Math topics
- Multiplication, Word problems, Skip counting, Place value, Missing addends
- Reading level
- grades 3-4
- Theme
- The Mystery of the Lost Temple Key — set in the deep, green jungles of Adventure Island
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects