Math Crackers
Grade 7Reading: grades 7-9RoundingMulti-step word problemsWord problemsIntegersMissing addends

The Mystery of the Sun Temple Relic

The ancient Sun Crystal was stolen from the central vault of Xylos Jungle Camp! Detective, analyze the clues left behind by the rogue explorers to unmask the culprit.

Suspects

Possible suspects

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

21 of 21 still in play
NamePrimary ToolSpecial AbilityDominant HandBandana ColorVulnerability
Elena FisherSmoke BombWall ClimbingLeft HandedCrimson BandanaPoison Ivy
Sydney FoxLaser CutterSilent TreadingRight HandedCrimson BandanaBright Flashlights
Rick O ConnellGrappling HookSilent TreadingLeft HandedEmerald BandanaLoud Whistles
Henry JonesLaser CutterNight VisionLeft HandedCobalt BandanaLoud Whistles
Samuel DrakeSmoke BombWall ClimbingRight HandedEmerald BandanaLoud Whistles
Ellie SattlerGrappling HookCamouflageLeft HandedEmerald BandanaLoud Whistles
Claire RedfieldLaser CutterSpeed RunningLeft HandedCrimson BandanaBright Flashlights
Amelia RiversSmoke BombWall ClimbingLeft HandedCobalt BandanaLoud Whistles
Maya LinDecoder RingSilent TreadingLeft HandedCrimson BandanaPoison Ivy
Owen GradyGrappling HookCamouflageRight HandedCrimson BandanaBright Flashlights
Alan GrantLaser CutterCamouflageRight HandedEmerald BandanaLoud Whistles
Evelyn CarnahanSmoke BombSilent TreadingLeft HandedEmerald BandanaLoud Whistles
Leo ValdezSmoke BombSpeed RunningLeft HandedEmerald BandanaLoud Whistles
Marcus BrodyMacheteSilent TreadingRight HandedEmerald BandanaLoud Whistles
Chloe StoneSmoke BombSpeed RunningLeft HandedCrimson BandanaPoison Ivy
Jack WilderDecoder RingSilent TreadingLeft HandedEmerald BandanaPoison Ivy
Indy DrakeLaser CutterWall ClimbingRight HandedCobalt BandanaPoison Ivy
Carter KaneDecoder RingWall ClimbingLeft HandedEmerald BandanaLoud Whistles
Flynn CarsonLaser CutterCamouflageRight HandedCrimson BandanaLoud Whistles
Nathan VanceGrappling HookSpeed RunningLeft HandedCobalt BandanaBright Flashlights
Lara CroftMacheteSilent TreadingRight HandedCrimson BandanaPoison Ivy
Clue 1

Rounding

To figure out how far the thief fled, calculate the supplies taken from camp across multiple supply crates.

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
70
5000
3700
2000
7000
2000
500
3700
1100
T
70
290
170
3700
2000
50
170
T
70
7000
2000
3700
1100
4300
3000
170
7000
1700
230
4300
900
3700
Round 67 to the nearest tenT
Round 3,696 to the nearest hundredE
Round 4,725 to the nearest thousandH
Round 1,104 to the nearest hundredC
Round 51 to the nearest tenN
Round 2,002 to the nearest thousandS
Round 2,893 to the nearest thousandM
Round 484 to the nearest hundredP
Round 917 to the nearest hundredG
Round 234 to the nearest tenL
Round 6,609 to the nearest thousandU
Round 4,285 to the nearest hundredA
Round 1,723 to the nearest hundredF
Round 174 to the nearest tenO
Round 293 to the nearest tenD
0/15 letters found
Clue 2

Multi-step word problems

The camp radar tracked movements, but the display panel rounds all distance readings to the nearest hundred meters.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Awitnesssawthevillainwas
L
49
25
90
19
12
61
23
D
 
25
D
 
.
Ranger filled 8 boxes with 2 rope coils each, then found 33 more rope coils. How many rope coils are there in all?L
There were 331 golden idols in all. 26 golden idols were set aside. The rest were shared equally among 5 expedition team. How many golden idols did each get?A
Ranger earned 2 compasses in each of 6 rounds, plus 17 bonus compasses. Then 4 compasses were lost. How many compasses are left?E
There were 542 torch batteries in all. 2 torch batteries were set aside. The rest were shared equally among 6 expedition team. How many torch batteries did each get?F
Ranger collected 27 compasses in the morning and 19 compasses in the afternoon, then split them equally among 2 expedition team. How many compasses did each get?N
There were 78 trail maps in all. 2 expedition team used 9 trail maps each. The other 5 expedition team shared the rest equally. How many trail maps did each of the other expedition team get?H
Ranger collected 26 golden idols in the morning and 12 golden idols in the afternoon, then split them equally among 2 expedition team. How many golden idols did each get?T
0/7 letters found
Clue 3

Word problems

Examining the trail requires figuring out how many trail markers the thief left per mile.

Solve each problem to learn its letter, then write the letters in the boxes to fill in the missing word.

Someonescaredthevillainoffwith
L
69
18
39
44
87
86
120
S
 
T
 
L
69
E
 
S
 
.
Ranger found 41 compasses yesterday and 28 more today. How many compasses in all?L
There were 121 trail maps. 35 were used up. How many trail maps are left?H
There were 120 compasses. 33 were used up. How many compasses are left?W
Ranger found 27 compasses yesterday and 12 more today. How many compasses in all?U
Ranger lined up 3 rows of 6 torch batteries. How many torch batteries in all?O
Ranger found 43 rope coils yesterday and 77 more today. How many rope coils in all?I
Ranger lined up 4 rows of 11 compasses. How many compasses in all?D
0/7 letters found
Clue 4

Integers

The temple depth gauge records changes in elevation above and below sea level as signed integer values.

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
18
11
4
6
A
18
22
29
26
6
14
19
A
18
22
21
19
21
6
A
18
17
29
30
A
18
22
29
A
18
22
A
18
3
A
18
11
26
14
13
22
29
(-11) + 29 =A
(-2) + 15 =U
14 - (-12) =F
(-8) + 14 =R
(-14) + 28 =O
(-11) + 14 =W
23 - (-7) =B
(-7) + 36 =D
4 - (-15) =M
(-1) + 5 =T
18 - (-3) =E
(-2) + 24 =N
(-5) + 22 =L
(-4) + 15 =S
0/14 letters found
Clue 5

Missing addends — the last clue

The security gate code panel requires finding the missing energy values to unlock the final log.

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
25 + ___ = 30
8 + ___ = 17
10 + ___ = 13
2 + ___ = 6
17 + ___ = 28
34 + ___ = 42
23 + ___ = 25
1 + ___ = 7
14 + ___ = 26
27 + ___ = 34
34 + ___ = 44
Step 2 — cross out the sentence with each answer
1.The villain unlocked the ancient cipher using a decoder ring, then scaled the steep stone ruins.
2.The villain cleared a path through dense vines with a machete, then scaled the steep stone ruins.
3.The villain swung across the chasm with a grappling hook, then snuck past the sleeping guard dogs.
4.The villain swung across the chasm with a grappling hook, then blended into the jungle foliage.
5.The villain vanished into a cloud of smoke bombs, then sprinted past the temple dart traps.
6.The villain sliced through the vault bar with a laser cutter, then snuck past the sleeping guard dogs.
7.The villain cleared a path through dense vines with a machete, then blended into the jungle foliage.
8.The villain swung across the chasm with a grappling hook, then navigated through the pitch black tunnels.
9.The villain vanished into a cloud of smoke bombs, then snuck past the sleeping guard dogs.
10.The villain unlocked the ancient cipher using a decoder ring, then navigated through the pitch black tunnels.
11.The villain sliced through the vault bar with a laser cutter, then scaled the steep stone ruins.
12.The villain unlocked the ancient cipher using a decoder ring, then blended into the jungle foliage.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 7 math
Math topics
Rounding, Multi-step word problems, Word problems, Integers, Missing addends
Reading level
grades 7-9
Theme
The Mystery of the Sun Temple Relic — set in The Lost Jungle Temple of Xylos
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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