Grade 5Reading: grades 5-6AdditionSubtractionMultiplicationSkip countingDivision

The Secret of the Emerald Monkey Temple

The golden artifact of the Emerald Monkey Temple has vanished from the base camp! A rogue explorer sneaked past the camp guards, swiped the ancient relic, and escaped into the dense canopy. Chief Curator Higgins needs your help to track the thief down before they board a plane out of the jungle!

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	Explorer Tool	Adventure Gear	Observed Stance	Hair Color	Phobia or Dislike
Jack	decoder ring	compass	right-handed stance	jet black hair	scared of spiders
Hudson	binoculars	cargo vest	left-handed stance	bright red hair	scared of spiders
Nellie	decoder ring	safari hat	right-handed stance	jet black hair	dislikes mosquitoes
Arthur	jungle map	hiking boots	left-handed stance	jet black hair	dislikes mosquitoes
Wyatt	jungle map	backpack	left-handed stance	dusty brown hair	dislikes mosquitoes
Marco	binoculars	backpack	left-handed stance	jet black hair	scared of spiders
Hazel	grappling hook	hiking boots	left-handed stance	bright red hair	afraid of heights
Leo	machete	hiking boots	left-handed stance	jet black hair	scared of spiders
Evie	decoder ring	hiking boots	left-handed stance	jet black hair	scared of spiders
Amelia	grappling hook	compass	right-handed stance	dusty brown hair	dislikes mosquitoes
Cleo	jungle map	cargo vest	left-handed stance	jet black hair	scared of spiders
Penny	machete	hiking boots	right-handed stance	jet black hair	scared of spiders
Darwin	binoculars	hiking boots	right-handed stance	dusty brown hair	dislikes mosquitoes
Indy	binoculars	hiking boots	left-handed stance	bright red hair	afraid of heights
Freya	binoculars	cargo vest	left-handed stance	bright red hair	dislikes mosquitoes
Steve	machete	compass	left-handed stance	dusty brown hair	afraid of heights
Daisy	machete	compass	left-handed stance	jet black hair	scared of spiders
Brody	decoder ring	cargo vest	right-handed stance	dusty brown hair	scared of spiders
Percy	decoder ring	backpack	left-handed stance	jet black hair	afraid of heights
Maya	binoculars	safari hat	right-handed stance	jet black hair	scared of spiders
Carter	machete	backpack	left-handed stance	bright red hair	dislikes mosquitoes

Clue 1

Addition

We found the camp supply tent rummaged through. By adding up the remaining flashlights and sleeping bags, we figured out exactly what gear the rogue explorer stole. This clue narrows down their extra gear.

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

3421

6639

3223

3421

6639

2723

3223

8219

9380

8086

3223

2345

7566

8086

3421

6639

4874

4339

3223

4874

9191

8086

4920

5071

4874

2345

2199 + 1222 =T

3199 + 5020 =F

1242 + 1981 =E

1377 + 1346 =I

3542 + 4544 =O

1914 + 3157 =P

1019 + 1326 =S

2870 + 2050 =M

2582 + 2292 =A

4322 + 2317 =H

3993 + 5198 =C

5092 + 4288 =D

2148 + 2191 =V

4241 + 3325 =N

0/14 letters found

Clue 2

Subtraction

The thief dropped several trail markers as they fled. If we subtract the markers we recovered from the total they started with, we can pinpoint which trail they took. This clue reveals the thief's tell.

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

7312

1936

4790

6703

7919

6703

6590

4790

2854

7312

2716

4078

5283

6590

4790

2716

2082

1481

4790

3108

7312

1936

2082

2255

2716

4790

2716

5915

1481

5283

1264

4790

12065 - 4753 =T

7209 - 4954 =N

5585 - 2869 =D

2622 - 686 =H

7264 - 674 =P

3476 - 1394 =A

5941 - 1863 =R

6792 - 877 =G

8416 - 3133 =O

5622 - 2768 =C

7274 - 4166 =F

5204 - 3723 =L

10660 - 2741 =U

3594 - 2330 =V

6266 - 1476 =E

7602 - 899 =S

0/16 letters found

Clue 3

Multiplication facts (1-12)

The thief fled past the sacred orchard. By multiplying the rows of banana trees by the count in each row, we can calculate how many monkeys they disturbed. This clue shows what hair color we are looking for.

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

121

9 × 5 =T

4 × 11 =M

3 × 12 =E

2 × 7 =N

11 × 11 =D

12 × 8 =H

3 × 5 =Y

3 × 7 =F

9 × 10 =R

10 × 7 =O

1 × 8 =L

9 × 7 =P

10 × 2 =A

12 × 7 =W

8 × 7 =I

5 × 7 =S

0/16 letters found

Clue 4

Skip counting

To cross the dangerous swamp, the thief had to step only on safe carved stones in a numbered sequence. By skip counting along the stones, we found the path they used. This clue reveals their biggest weakness.

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

120

110

140

130

110

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24A

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21B

Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10W

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60G

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160R

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80N

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50C

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130I

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65T

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39L

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33E

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18J

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150U

Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45O

Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140K

Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15V

Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48S

Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26H

0/18 letters found

Clue 5

Division facts (1-12) — the last clue

We recovered some ripped notebook pages from the thief's camp. When we divided the total number of pages equally among our team members, a secret message appeared! This final clue reveals the thief's main power.

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

132 ÷ 12 = ?

48 ÷ 4 = ?

48 ÷ 6 = ?

40 ÷ 4 = ?

2 ÷ 1 = ?

99 ÷ 11 = ?

12 ÷ 4 = ?

77 ÷ 11 = ?

12 ÷ 2 = ?

35 ÷ 7 = ?

2 ÷ 2 = ?

Step 2 — cross out the sentence with each answer

1.The villain spotted the patrol route using binoculars, then navigated south using a brass compass.

2.The villain swung through the trees with a grappling hook, then navigated south using a brass compass.

3.The villain cleared a path using a sharp machete, then navigated south using a brass compass.

4.The villain spotted the patrol route using binoculars, then stuffed the heavy golden artifact into a canvas backpack.

5.The villain plotted a secret escape route using a jungle map, then left deep muddy tracks with hiking boots.

6.The villain swung through the trees with a grappling hook, then stuffed the heavy golden artifact into a canvas backpack.

7.The villain swung through the trees with a grappling hook, then dropped their dusty safari hat in the mud.

8.The villain unlocked the stone door with a decoder ring, then left deep muddy tracks with hiking boots.

9.The villain plotted a secret escape route using a jungle map, then dropped their dusty safari hat in the mud.

10.The villain unlocked the stone door with a decoder ring, then navigated south using a brass compass.

11.The villain cleared a path using a sharp machete, then left deep muddy tracks with hiking boots.

12.The villain plotted a secret escape route using a jungle map, then ripped their pocketed cargo vest on a branch.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Secret of the Emerald Monkey Temple

Culprit: Marco (binoculars · backpack · left-handed stance · jet black hair · scared of spiders)

Clue 1 (Addition): "THE THIEF DOES NOT HAVE A COMPASS"
2199 + 1222 = 3421 (T) · 3199 + 5020 = 8219 (F) · 1242 + 1981 = 3223 (E) · 1377 + 1346 = 2723 (I) · 3542 + 4544 = 8086 (O) · 1914 + 3157 = 5071 (P) · 1019 + 1326 = 2345 (S) · 2870 + 2050 = 4920 (M) · 2582 + 2292 = 4874 (A) · 4322 + 2317 = 6639 (H) · 3993 + 5198 = 9191 (C) · 5092 + 4288 = 9380 (D) · 2148 + 2191 = 4339 (V) · 4241 + 3325 = 7566 (N)
Clue 2 (Subtraction): "THE SUSPECT DROPPED A LEFT HANDED GLOVE"
12065 - 4753 = 7312 (T) · 7209 - 4954 = 2255 (N) · 5585 - 2869 = 2716 (D) · 2622 - 686 = 1936 (H) · 7264 - 674 = 6590 (P) · 3476 - 1394 = 2082 (A) · 5941 - 1863 = 4078 (R) · 6792 - 877 = 5915 (G) · 8416 - 3133 = 5283 (O) · 5622 - 2768 = 2854 (C) · 7274 - 4166 = 3108 (F) · 5204 - 3723 = 1481 (L) · 10660 - 2741 = 7919 (U) · 3594 - 2330 = 1264 (V) · 6266 - 1476 = 4790 (E) · 7602 - 899 = 6703 (S)
Clue 3 (Multiplication facts (1-12)): "THEY RAN AWAY FROM A HARMLESS SPIDER"
9 × 5 = 45 (T) · 4 × 11 = 44 (M) · 3 × 12 = 36 (E) · 2 × 7 = 14 (N) · 11 × 11 = 121 (D) · 12 × 8 = 96 (H) · 3 × 5 = 15 (Y) · 3 × 7 = 21 (F) · 9 × 10 = 90 (R) · 10 × 7 = 70 (O) · 1 × 8 = 8 (L) · 9 × 7 = 63 (P) · 10 × 2 = 20 (A) · 12 × 7 = 84 (W) · 8 × 7 = 56 (I) · 5 × 7 = 35 (S)
Clue 4 (Skip counting): "A JET BLACK HAIR WAS CAUGHT ON A VINE"
Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, ___, 22, 24 = 20 (A) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, ___, 18, 21 = 15 (B) · Skip-count by 2s. Fill the blank: 2, 4, ___, 8, 10 = 6 (W) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, ___, 55, 60 = 50 (G) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, ___, 150, 160 = 140 (R) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, ___, 75, 80 = 70 (N) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, ___, 45, 50 = 40 (C) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, ___, 120, 130 = 110 (I) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, ___, 60, 65 = 55 (T) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, ___, 36, 39 = 33 (L) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, ___, 30, 33 = 27 (E) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, ___, 16, 18 = 14 (J) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, ___, 140, 150 = 130 (U) · Skip-count by 5s. Fill the blank: 5, 10, 15, 20, 25, 30, ___, 40, 45 = 35 (O) · Skip-count by 10s. Fill the blank: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, ___, 130, 140 = 120 (K) · Skip-count by 3s. Fill the blank: 3, 6, ___, 12, 15 = 9 (V) · Skip-count by 3s. Fill the blank: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, ___, 45, 48 = 42 (S) · Skip-count by 2s. Fill the blank: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, ___, 24, 26 = 22 (H)
Clue 5 (Division facts (1-12)): surviving statement (box 4) → Marco
132 ÷ 12 = 11 · 48 ÷ 4 = 12 · 48 ÷ 6 = 8 · 40 ÷ 4 = 10 · 2 ÷ 1 = 2 · 99 ÷ 11 = 9 · 12 ÷ 4 = 3 · 77 ÷ 11 = 7 · 12 ÷ 2 = 6 · 35 ÷ 7 = 5 · 2 ÷ 2 = 1

About this mystery

Grade level: Grade 5 math
Math topics: Addition, Subtraction, Multiplication, Skip counting, Division
Reading level: grades 5-6
Theme: The Secret of the Emerald Monkey Temple — set in the ancient, vine-covered ruins of the Emerald Monkey Temple deep in the Amazon Basin
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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