Grade 2Reading: grades 1-2AdditionMultiplicationPlace valueSubtractionMissing addends

The Case of the Trail Sneak

Camp Wildwood woke up to big trouble. Someone snuck off with Ranger Pop and left only muddy tracks by the tents. Now it is up to you to follow the clues and catch the Trail Sneak.

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	Way to Travel	Camp Skill	Explorer	Hair Color	Weak Spot
Pia	paddles a canoe	ties tricky knots	a girl	red hair	sneezes at dust
Mia	glides on a kite	digs secret tunnels	a girl	red hair	ticklish feet
Zoe	climbs tall cliffs	ties tricky knots	a girl	black hair	sneezes at dust
Leo	glides on a kite	ties tricky knots	a girl	red hair	scared of frogs
Hana	glides on a kite	whistles bird calls	a girl	red hair	sneezes at dust
Ruby	glides on a kite	ties tricky knots	a girl	brown hair	scared of frogs
Rosa	climbs tall cliffs	lights a lantern	a girl	black hair	ticklish feet
Lily	glides on a kite	digs secret tunnels	a girl	black hair	scared of frogs
Sam	swings on vines	ties tricky knots	a girl	red hair	ticklish feet
Nora	climbs tall cliffs	ties tricky knots	a girl	red hair	sneezes at dust
Cole	gallops on a pony	whistles bird calls	a boy	red hair	sneezes at dust
Tariq	gallops on a pony	digs secret tunnels	a girl	black hair	sneezes at dust
Max	climbs tall cliffs	ties tricky knots	a boy	brown hair	ticklish feet
Ivy	paddles a canoe	digs secret tunnels	a girl	red hair	ticklish feet
Eli	climbs tall cliffs	reads star maps	a girl	red hair	sneezes at dust
Beck	gallops on a pony	whistles bird calls	a boy	black hair	sneezes at dust
Maya	climbs tall cliffs	reads star maps	a boy	red hair	ticklish feet
Ben	swings on vines	lights a lantern	a girl	red hair	sneezes at dust
Gus	climbs tall cliffs	whistles bird calls	a boy	red hair	sneezes at dust
Theo	gallops on a pony	digs secret tunnels	a boy	black hair	scared of frogs
Finn	paddles a canoe	whistles bird calls	a boy	red hair	ticklish feet

Clue 1

Addition

The Trail Sneak grabbed Ranger Pop at dawn. Add up the muddy tracks by each tent to see which path the sneak took.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

63 + 31 =T

43 + 45 =O

13 + 13 =N

6 + 16 =P

57 + 30 =M

28 + 40 =D

14 + 14 =K

40 + 46 =E

30 + 40 =C

65 + 32 =S

49 + 27 =A

60 + 32 =R

23 + 33 =H

0/13 letters found

Clue 2

Multiplication facts (1-12)

The sneak left footprints in neat rows. Count the rows and how many are in each row to find the next 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.

108

3 × 8 =A

7 × 12 =S

9 × 12 =E

11 × 1 =N

2 × 11 =F

1 × 7 =W

5 × 8 =U

8 × 12 =T

6 × 9 =G

5 × 5 =O

9 × 7 =L

1 × 9 =I

1 × 1 =R

0/13 letters found

Clue 3

Place value (tens & ones)

A torn map has a big number on it. Look at the tens and the ones to read its secret.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

What number has 8 tens and 1 one?W

What number has 2 tens and 6 ones?N

What number has 7 tens and 0 ones?U

What number has 5 tens and 9 ones?E

What number has 7 tens and 7 ones?R

What number has 5 tens and 0 ones?S

What number has 1 ten and 2 ones?O

What number has 8 tens and 9 ones?G

What number has 7 tens and 6 ones?T

What number has 4 tens and 2 ones?A

What number has 7 tens and 1 one?I

What number has 4 tens and 4 ones?H

What number has 4 tens and 5 ones?K

What number has 9 tens and 5 ones?M

What number has 6 tens and 7 ones?B

What number has 2 tens and 1 one?D

What number has 6 tens and 5 ones?Z

0/17 letters found

Clue 4

Subtraction

Some food packs are gone from the shelf. Take away to learn how many the sneak grabbed.

Solve each problem to learn its letter. Then write that letter in every box that shows the same number, and read the secret clue.

89 - 17 =W

22 - 10 =F

33 - 13 =I

73 - 23 =Y

60 - 30 =R

65 - 4 =A

73 - 7 =D

107 - 20 =N

77 - 23 =B

50 - 24 =H

75 - 27 =T

76 - 18 =O

78 - 23 =U

39 - 17 =E

0/14 letters found

Clue 5

Missing addends — the last clue

We need a full set of ropes to climb after the sneak. Find how many more ropes we must add.

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 + ___ = 20

9 + ___ = 20

2 + ___ = 14

3 + ___ = 7

9 + ___ = 18

10 + ___ = 18

3 + ___ = 10

3 + ___ = 8

8 + ___ = 14

2 + ___ = 5

7 + ___ = 9

Step 2 — cross out the sentence with each answer

1.The villain swings in on a vine, then lights a lantern to see.

2.The villain swings in on a vine, then reads the star map.

3.The villain glides in on a kite, then ties up the gate.

4.The villain gallops in on a pony, then whistles a fake bird call.

5.The villain paddles up in a canoe, then digs under the fence.

6.The villain gallops in on a pony, then reads the star map.

7.The villain swings in on a vine, then whistles a fake bird call.

8.The villain climbs down a cliff, then whistles a fake bird call.

9.The villain swings in on a vine, then digs under the fence.

10.The villain glides in on a kite, then whistles a fake bird call.

11.The villain paddles up in a canoe, then ties up the gate.

12.The villain climbs down a cliff, then ties up the gate.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Case of the Trail Sneak

Culprit: Ben (swings on vines · lights a lantern · a girl · red hair · sneezes at dust)

Clue 1 (Addition): "THE SNEAK CANNOT READ STAR MAPS"
63 + 31 = 94 (T) · 43 + 45 = 88 (O) · 13 + 13 = 26 (N) · 6 + 16 = 22 (P) · 57 + 30 = 87 (M) · 28 + 40 = 68 (D) · 14 + 14 = 28 (K) · 40 + 46 = 86 (E) · 30 + 40 = 70 (C) · 65 + 32 = 97 (S) · 49 + 27 = 76 (A) · 60 + 32 = 92 (R) · 23 + 33 = 56 (H)
Clue 2 (Multiplication facts (1-12)): "A WITNESS SAW A GIRL RUN OFF"
3 × 8 = 24 (A) · 7 × 12 = 84 (S) · 9 × 12 = 108 (E) · 11 × 1 = 11 (N) · 2 × 11 = 22 (F) · 1 × 7 = 7 (W) · 5 × 8 = 40 (U) · 8 × 12 = 96 (T) · 6 × 9 = 54 (G) · 5 × 5 = 25 (O) · 9 × 7 = 63 (L) · 1 × 9 = 9 (I) · 1 × 1 = 1 (R)
Clue 3 (Place value (tens & ones)): "WE THREW DUST TO MAKE A BIG SNEEZE"
What number has 8 tens and 1 one? = 81 (W) · What number has 2 tens and 6 ones? = 26 (N) · What number has 7 tens and 0 ones? = 70 (U) · What number has 5 tens and 9 ones? = 59 (E) · What number has 7 tens and 7 ones? = 77 (R) · What number has 5 tens and 0 ones? = 50 (S) · What number has 1 ten and 2 ones? = 12 (O) · What number has 8 tens and 9 ones? = 89 (G) · What number has 7 tens and 6 ones? = 76 (T) · What number has 4 tens and 2 ones? = 42 (A) · What number has 7 tens and 1 one? = 71 (I) · What number has 4 tens and 4 ones? = 44 (H) · What number has 4 tens and 5 ones? = 45 (K) · What number has 9 tens and 5 ones? = 95 (M) · What number has 6 tens and 7 ones? = 67 (B) · What number has 2 tens and 1 one? = 21 (D) · What number has 6 tens and 5 ones? = 65 (Z)
Clue 4 (Subtraction): "WE FOUND A RED HAIR BY THE TENT"
89 - 17 = 72 (W) · 22 - 10 = 12 (F) · 33 - 13 = 20 (I) · 73 - 23 = 50 (Y) · 60 - 30 = 30 (R) · 65 - 4 = 61 (A) · 73 - 7 = 66 (D) · 107 - 20 = 87 (N) · 77 - 23 = 54 (B) · 50 - 24 = 26 (H) · 75 - 27 = 48 (T) · 76 - 18 = 58 (O) · 78 - 23 = 55 (U) · 39 - 17 = 22 (E)
Clue 5 (Missing addends): surviving statement (box 1) → Ben
10 + ___ = 20 = 10 · 9 + ___ = 20 = 11 · 2 + ___ = 14 = 12 · 3 + ___ = 7 = 4 · 9 + ___ = 18 = 9 · 10 + ___ = 18 = 8 · 3 + ___ = 10 = 7 · 3 + ___ = 8 = 5 · 8 + ___ = 14 = 6 · 2 + ___ = 5 = 3 · 7 + ___ = 9 = 2

About this mystery

Grade level: Grade 2 math
Math topics: Addition, Multiplication, Place value, Subtraction, Missing addends
Reading level: grades 1-2
Theme: The Case of the Trail Sneak — set in Camp Wildwood, deep in the green woods
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects