Math Crackers
Grade 4Reading: grades 3-4Fractions of a numberRoundingAdditionSubtraction

The Mystery of Whispering Temple

Someone broke into the Whispering Temple and snagged the ancient Golden Sun Compass! The expedition team needs your help to solve clues, narrow down the suspects, and catch the sneaky raider.

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 GearSpecial ToolDominant HandHat ColorFeared Element
Ranger FinnGlider WingsCompass RingLeft HandedRuby RedLoud Whistles
Dr ArloGlider WingsCompass RingLeft HandedCobalt BlueLoud Whistles
Pilot ZuriMachete BladeDecodable MapLeft HandedCobalt BlueBright Light
Tracker BramClimbing ClawsRope LauncherRight HandedCobalt BlueLoud Whistles
Pilot BodhiGlider WingsLaser TorchLeft HandedCobalt BlueCold Water
Explorer MayaSmoke BombsCompass RingLeft HandedEmerald GreenBright Light
Ranger OttoClimbing ClawsLaser TorchLeft HandedCobalt BlueLoud Whistles
Dr MinaMachete BladeSignal FlareRight HandedRuby RedLoud Whistles
Explorer TessaGlider WingsDecodable MapRight HandedCobalt BlueCold Water
Agent KikiGlider WingsRope LauncherRight HandedCobalt BlueLoud Whistles
Ranger JaxMachete BladeSignal FlareLeft HandedCobalt BlueLoud Whistles
Explorer RubyGlider WingsCompass RingLeft HandedEmerald GreenLoud Whistles
Scout IrisGrappling HookCompass RingLeft HandedCobalt BlueLoud Whistles
Guide EliSmoke BombsSignal FlareRight HandedRuby RedLoud Whistles
Guide MateoGlider WingsRope LauncherRight HandedEmerald GreenLoud Whistles
Tracker ChloeMachete BladeSignal FlareRight HandedCobalt BlueCold Water
Professor LeoSmoke BombsDecodable MapRight HandedRuby RedLoud Whistles
Dr SamMachete BladeSignal FlareLeft HandedCobalt BlueBright Light
Captain CleoSmoke BombsDecodable MapLeft HandedCobalt BlueLoud Whistles
Guide EzraSmoke BombsRope LauncherRight HandedRuby RedLoud Whistles
Agent HugoGrappling HookLaser TorchLeft HandedEmerald GreenBright Light
Clue 1

Fractions of a number

You discover a fraction of the temple map showing where the raider searched.

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
12
29
8
T
12
8
5
30
31
8
36
23
3
32
8
36
32
28
8
40
22
28
T
12
33
40
8
23
31
23
40
8
36
T
12
28
36
20
29
4/8 of 24 =T
4/10 of 100 =S
2/10 of 115 =A
5/6 of 36 =P
2/4 of 64 =D
3/6 of 10 =M
1/8 of 176 =N
3/6 of 56 =O
2/8 of 116 =H
1/8 of 24 =I
2/4 of 72 =R
3/6 of 66 =U
1/2 of 62 =L
2/4 of 16 =E
5/8 of 32 =C
0/15 letters found
Clue 2

Rounding

The sensor array on the temple wall rounds its energy reading to the nearest ten.

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
50
2900
1100
2300
1700
170
30
700
130
90
1700
9000
A
50
900
2300
2000
290
90
430
2000
90
1700
300
1100
900
1700
2000
90
1100
430
130
A
50
2900
Round 48 to the nearest tenA
Round 8,767 to the nearest thousandW
Round 2,316 to the nearest hundredF
Round 126 to the nearest tenI
Round 430 to the nearest tenD
Round 169 to the nearest tenY
Round 29 to the nearest tenP
Round 288 to the nearest tenU
Round 692 to the nearest hundredR
Round 854 to the nearest hundredS
Round 262 to the nearest hundredH
Round 1,087 to the nearest hundredE
Round 2,064 to the nearest thousandO
Round 2,904 to the nearest hundredL
Round 87 to the nearest tenN
Round 1,672 to the nearest hundredT
0/16 letters found
Clue 3

Addition

You add up the dropped supplies left behind near the escape tunnel.

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
4046
4775
3308
2689
2821
8080
6757
3308
2689
4396
2965
4421
3308
2689
3308
6757
3308
2821
2689
8192
2887
2689
2965
8471
4460
2965
4285
6757
2577
4775
8080
8192
T
4046
4460
3308
8192
2148 + 1898 =T
1980 + 2416 =C
1028 + 1661 =R
1637 + 2648 =U
3090 + 1370 =L
1662 + 2759 =V
919 + 1968 =F
1274 + 1303 =W
1911 + 2864 =H
1260 + 1561 =A
5205 + 2987 =S
2924 + 3833 =D
1733 + 1575 =E
4148 + 4323 =M
1588 + 1377 =O
2727 + 5353 =I
0/16 letters found
Clue 4

Subtraction

You calculate the stolen weight by subtracting what remains in the chest.

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
3049
1576
1553
6865
A
3049
7657
2260
6865
7657
2096
5904
7368
A
3049
6865
3952
6185
1576
2466
2260
3952
6185
1201
7003
A
3049
2466
1553
6263
A
3049
2260
6956
1553
3952
6263
3625 - 576 =A
6669 - 4203 =S
11643 - 3986 =L
11738 - 4873 =B
2057 - 504 =O
6611 - 4351 =T
7232 - 969 =N
8685 - 1682 =W
2504 - 1303 =P
3679 - 2103 =C
8394 - 2209 =I
5624 - 1672 =R
4624 - 2528 =U
6193 - 289 =E
9330 - 2374 =H
9950 - 2582 =F
0/16 letters found
Clue 5

Fractions of a number — the last clue

You analyze a fraction of the mysterious footprints leading toward the exit.

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
3/6 of 12 = ?
1/3 of 12 = ?
1/10 of 90 = ?
1/5 of 10 = ?
1/5 of 15 = ?
1/2 of 22 = ?
1/5 of 5 = ?
5/8 of 16 = ?
1/2 of 10 = ?
1/5 of 60 = ?
2/6 of 21 = ?
Step 2 — cross out the sentence with each answer
1.The villain scaled the tall stone wall with climbing claws, then traced the secret path on a decodable map.
2.The villain cleared a path quickly using a machete blade, then melted the ancient latch with a laser torch.
3.The villain soared over the ravine using glider wings, then marked the exit route with a signal flare.
4.The villain soared over the ravine using glider wings, then unlocked the vault using a compass ring.
5.The villain soared over the ravine using glider wings, then traced the secret path on a decodable map.
6.The villain swung across the pit with a grappling hook, then unlocked the vault using a compass ring.
7.The villain vanished into thin air using smoke bombs, then unlocked the vault using a compass ring.
8.The villain cleared a path quickly using a machete blade, then marked the exit route with a signal flare.
9.The villain vanished into thin air using smoke bombs, then traced the secret path on a decodable map.
10.The villain scaled the tall stone wall with climbing claws, then melted the ancient latch with a laser torch.
11.The villain vanished into thin air using smoke bombs, then marked the exit route with a signal flare.
12.The villain swung across the pit with a grappling hook, then traced the secret path on a decodable map.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Fractions of a number, Rounding, Addition, Subtraction
Reading level
grades 3-4
Theme
The Mystery of Whispering Temple — set in Whispering Jungle Expedition
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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