Math Mysteries
Grade 4Reading: grades 3-4AdditionSubtractionMultiplicationFractions of a numberDivision

The Whispering Jungle Mystery

The golden compass of the ancient ruins has gone missing! Someone crept into the main tent last night and replaced it with a painted rock. We need to search the jungle camp, follow the clues, and find the real Artifact Thief before they escape down the river.

Suspects

Possible suspects

Cross off a row as each clue rules it out. On screen, tap a row.

21 of 21 still in play
NameGear ItemAnimal CompanionBoot StatusHair TypeGreatest Fear
RubySpyglassParrot companionWears clean bootsCurly red hairDislikes hot sauce
FinnSpyglassParrot companionWears clean bootsBright yellow hairDislikes hot sauce
BearGrappling HookOwl spotterWears clean bootsSpiky brown hairDislikes hot sauce
JacquesMini RadioMonkey helperWears clean bootsBright yellow hairScared of spiders
RexPocket CompassOwl spotterWears clean bootsBright yellow hairDislikes hot sauce
GemmaMini RadioOwl spotterWears muddy bootsSpiky brown hairScared of spiders
AmeliaHead LampGecko trackerWears clean bootsCurly red hairScared of spiders
LeoHead LampOwl spotterWears muddy bootsBright yellow hairDislikes hot sauce
SacagaweaPocket CompassMonkey helperWears muddy bootsCurly red hairScared of spiders
DoraGrappling HookOwl spotterWears clean bootsBright yellow hairAfraid of heights
ZoeHead LampParrot companionWears clean bootsBright yellow hairDislikes hot sauce
CodySpyglassOwl spotterWears clean bootsBright yellow hairDislikes hot sauce
SamSpyglassMonkey helperWears muddy bootsCurly red hairAfraid of heights
NelliePocket CompassParrot companionWears clean bootsSpiky brown hairAfraid of heights
MaxSpyglassFerret scoutWears muddy bootsBright yellow hairScared of spiders
LaraGrappling HookOwl spotterWears muddy bootsCurly red hairAfraid of heights
TobyHead LampMonkey helperWears clean bootsSpiky brown hairDislikes hot sauce
MarcoSpyglassMonkey helperWears clean bootsSpiky brown hairScared of spiders
PennySpyglassGecko trackerWears clean bootsBright yellow hairDislikes hot sauce
MiaMini RadioMonkey helperWears muddy bootsBright yellow hairDislikes hot sauce
DiegoMini RadioFerret scoutWears clean bootsCurly red hairDislikes hot sauce
Clue 1

Addition

We found an abandoned explorer pack but some gear is missing. Let us add the canteen and rope supplies together.

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
3717
6512
5409
T
3717
6512
3049
5409
3170
5076
7502
5409
7172
6678
7502
T
3717
6512
9476
2520
5409
9476
5119
5409
7151
2979
7502
T
3717
3070
9476
7151
2979
5409
3070
1227 + 2490 =T
3989 + 3162 =C
3928 + 3244 =S
4144 + 5332 =A
1863 + 1116 =K
2093 + 3316 =E
991 + 2058 =I
3191 + 1928 =G
1371 + 1699 =R
3305 + 1771 =D
1912 + 1258 =F
1159 + 1361 =V
4072 + 2440 =H
2741 + 3937 =N
4303 + 3199 =O
0/15 letters found
Clue 2

Subtraction

A mischievous jungle monkey stole some of our trail snacks. We must subtract to see how many bananas are 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
7429
1894
8360
8078
3119
5333
5333
1754
3119
7782
7523
4496
7993
7993
T
7429
5600
6131
3119
7782
T
7429
7523
7903
8360
6131
8360
2555
5333
8360
1754
7782
12140 - 4711 =T
9509 - 1149 =E
12859 - 4956 =W
6184 - 4430 =A
6780 - 4886 =H
6755 - 2259 =F
4495 - 1376 =I
7415 - 4860 =C
10549 - 4949 =P
7288 - 1157 =R
12491 - 4968 =S
12667 - 4589 =V
11936 - 3943 =O
11083 - 3301 =N
6649 - 1316 =L
0/15 letters found
Clue 3

Multiplication facts (1-12)

The ancient stone door has rows of gem buttons. We must multiply the rows to find the total and unlock the next 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
60
15
25
T
60
15
66
25
7
20
25
7
63
121
25
96
T
60
15
25
15
16
T
60
121
5
40
121
5
6 × 10 =T
3 × 5 =H
7 × 9 =U
8 × 5 =L
5 × 5 =E
11 × 11 =S
7 × 1 =F
1 × 5 =A
8 × 12 =D
4 × 4 =O
10 × 2 =R
11 × 6 =I
0/12 letters found
Clue 4

Fractions of a number

We found a basket of fresh jungle papayas. We need to calculate a fraction of them to share with our local guide.

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

A
17
32
30
5
31
13
38
12
9
20
20
28
16
13
A
17
5
30
27
20
19
14
31
38
28
38
13
9
29
A
17
24
1/2 of 34 =A
5/10 of 24 =Y
1/2 of 38 =U
6/8 of 40 =R
1/2 of 26 =H
4/8 of 62 =G
2/4 of 56 =O
8/10 of 40 =B
4/6 of 30 =L
4/8 of 32 =W
3/10 of 30 =E
5/10 of 48 =P
3/6 of 28 =N
3/10 of 90 =C
5/10 of 10 =I
4/6 of 57 =T
1/6 of 174 =M
0/17 letters found
Clue 5

Division facts (1-12) — the last clue

Our team discovered a hidden chest of gold coins. We must divide them equally to keep the expedition fair.

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
110 ÷ 11 = ?
20 ÷ 10 = ?
7 ÷ 1 = ?
30 ÷ 10 = ?
36 ÷ 6 = ?
72 ÷ 8 = ?
96 ÷ 8 = ?
25 ÷ 5 = ?
96 ÷ 12 = ?
99 ÷ 9 = ?
7 ÷ 7 = ?
Step 2 — cross out the sentence with each answer
1.The villain swung across the muddy river, then stole the glowing crystal.
2.The villain swung across the muddy river, then snatched the golden map.
3.The villain crossed the shaky rope bridge, then stole the glowing crystal.
4.The villain sneaked past the sleeping camp, then lifted the ruby idol.
5.The villain swung across the muddy river, then took the secret diary.
6.The villain dashed through the thick vines, then snatched the golden map.
7.The villain swung across the muddy river, then lifted the ruby idol.
8.The villain climbed up the tall stone wall, then lifted the ruby idol.
9.The villain dashed through the thick vines, then grabbed the ancient compass.
10.The villain crossed the shaky rope bridge, then snatched the golden map.
11.The villain dashed through the thick vines, then took the secret diary.
12.The villain sneaked past the sleeping camp, then grabbed the ancient compass.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Addition, Subtraction, Multiplication, Fractions of a number, Division
Reading level
grades 3-4
Theme
The Whispering Jungle Mystery — set in A hidden jungle camp near ancient ruins
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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