Math Crackers
🔎 Bass fishingGrade 4Reading: grades 3-4AdditionRoundingSubtractionMultiplicationDivision

The Grand Lake Trophy Snatch

Just before the final weigh-in at Grand Lake, someone snuck into the official weigh station and snatched the Golden Bass Trophy! The dock master saw a shadowy figure slip away into the morning mist. Detective, study the clues and catch the thief before the award ceremony starts!

Suspects

Possible suspects

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

21 of 21 still in play
NameFavorite LureEscape BoatCasting StyleHat StyleLure Scent
Angler AmyDeep CrankbaitPedal KayakRIGHT HANDED CASTGREEN BUCKET HATSHAD OIL DIP
Jimmy HoustonHeavy Flippin JigAluminum Jon BoatRIGHT HANDED CASTBLUE TRUCKER CAPANISE LURE SPRAY
River RoseFlash SpinnerbaitPedal KayakRIGHT HANDED CASTGREEN BUCKET HATANISE LURE SPRAY
Ike IaconelliPlastic WormSleek Bass BoatRIGHT HANDED CASTGREEN BUCKET HATSHAD OIL DIP
Jacob WheelerPlastic WormInflatable CanoeRIGHT HANDED CASTGREEN BUCKET HATSHAD OIL DIP
Pickerel PeteTopwater FrogSleek Bass BoatRIGHT HANDED CASTGREEN BUCKET HATGARLIC ATTRACTANT
Mercer VancePlastic WormElectric PontoonLEFT HANDED CASTRED CAMO VISORGARLIC ATTRACTANT
Lunker LukeFlash SpinnerbaitAluminum Jon BoatRIGHT HANDED CASTGREEN BUCKET HATSHAD OIL DIP
Hank ParkerHeavy Flippin JigSleek Bass BoatLEFT HANDED CASTGREEN BUCKET HATANISE LURE SPRAY
Reel RachelPlastic WormAluminum Jon BoatLEFT HANDED CASTBLUE TRUCKER CAPGARLIC ATTRACTANT
Ott DeFoeHeavy Flippin JigSleek Bass BoatRIGHT HANDED CASTRED CAMO VISORGARLIC ATTRACTANT
Marina MaxPlastic WormPedal KayakLEFT HANDED CASTBLUE TRUCKER CAPSHAD OIL DIP
Kevin VanDamTopwater FrogSleek Bass BoatRIGHT HANDED CASTBLUE TRUCKER CAPANISE LURE SPRAY
Fisher FinnHeavy Flippin JigElectric PontoonLEFT HANDED CASTGREEN BUCKET HATANISE LURE SPRAY
Skeet ReeseTopwater FrogInflatable CanoeRIGHT HANDED CASTGREEN BUCKET HATSHAD OIL DIP
Captain CodyHeavy Flippin JigAluminum Jon BoatLEFT HANDED CASTBLUE TRUCKER CAPGARLIC ATTRACTANT
Sam RayburnFlash SpinnerbaitPedal KayakLEFT HANDED CASTGREEN BUCKET HATSHAD OIL DIP
Dockside DaisyPlastic WormSleek Bass BoatRIGHT HANDED CASTBLUE TRUCKER CAPGARLIC ATTRACTANT
Roland MartinPlastic WormAluminum Jon BoatRIGHT HANDED CASTRED CAMO VISORGARLIC ATTRACTANT
Tackle TimDeep CrankbaitSleek Bass BoatRIGHT HANDED CASTRED CAMO VISORANISE LURE SPRAY
Bill DanceTopwater FrogSleek Bass BoatRIGHT HANDED CASTRED CAMO VISORSHAD OIL DIP
Clue 1

Addition

The judge tallies the total number of lure boxes found at the dock to reveal the first evidence.

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
3016
3065
9804
6259
4219
2725
7988
5052
T
3016
7988
5052
7988
2725
3571
T
3016
9804
7019
4046
4219
9093
9804
5052
2725
4219
3005
3571
2725
6259
3571
4219
T
3016
1192 + 1824 =T
2656 + 1563 =A
5014 + 4790 =E
2726 + 5262 =D
2466 + 4553 =S
1288 + 1717 =J
1731 + 1840 =O
907 + 1818 =N
3361 + 1691 =I
5720 + 3373 =P
2813 + 1233 =C
1884 + 1181 =H
2863 + 3396 =B
0/13 letters found
Clue 2

Rounding

The scale readout rounds the total catch weight to the nearest ten pounds to give a second hint.

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
9000
5000
130
1700
200
500
200
A
9000
4300
3700
700
3700
300
A
9000
2300
500
20
700
430
500
50
700
A
9000
5000
90
4300
500
200
700
5000
700
700
20
Round 9,239 to the nearest thousandA
Round 265 to the nearest hundredC
Round 48 to the nearest tenW
Round 5,347 to the nearest thousandR
Round 430 to the nearest tenF
Round 3,699 to the nearest hundredD
Round 4,312 to the nearest hundredN
Round 1,689 to the nearest hundredG
Round 505 to the nearest hundredT
Round 741 to the nearest hundredE
Round 2,254 to the nearest hundredS
Round 24 to the nearest tenL
Round 128 to the nearest tenI
Round 90 to the nearest tenO
Round 203 to the nearest hundredH
0/15 letters found
Clue 3

Subtraction

We subtract the damaged fishing poles from the rack inventory to uncover the third suspect 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.

T
6918
5005
7178
7507
8802
6779
7533
8046
8561
8370
8370
3672
5167
8561
8370
5005
7178
7507
8046
1037
T
6918
5005
8370
5005
8561
7507
8802
1037
5167
7507
1037
3672
9805 - 2887 =T
6177 - 2505 =P
9595 - 2088 =D
10140 - 1338 =O
5880 - 4843 =I
11210 - 3164 =W
9359 - 989 =S
9519 - 2341 =E
9394 - 4227 =L
6857 - 78 =C
10871 - 2310 =A
10161 - 2628 =K
5592 - 587 =H
0/13 letters found
Clue 4

Multiplication facts (1-12)

Counting rows of mounted rod holders along the pier gives us our fourth breakthrough.

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

F
144
22
63
16
55
90
110
84
120
120
16
F
144
90
54
84
80
3
81
2
84
90
16
55
F
144
84
22
4
90
54
63
3
72
120
2
132
90
2
12 × 12 =F
2 × 2 =M
10 × 9 =A
10 × 8 =I
12 × 6 =K
9 × 9 =S
10 × 11 =G
7 × 12 =R
7 × 9 =U
11 × 2 =O
12 × 10 =E
5 × 11 =D
2 × 1 =T
3 × 1 =C
8 × 2 =N
9 × 6 =B
12 × 11 =H
0/17 letters found
Clue 5

Division facts (1-12) — the last clue

Dividing the remaining buckets of live bait equally among the boats reveals the final piece.

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 ÷ 1 = ?
12 ÷ 12 = ?
40 ÷ 5 = ?
48 ÷ 12 = ?
110 ÷ 10 = ?
9 ÷ 1 = ?
84 ÷ 12 = ?
3 ÷ 1 = ?
16 ÷ 8 = ?
132 ÷ 11 = ?
35 ÷ 7 = ?
Step 2 — cross out the sentence with each answer
1.The villain tied on a deep diving crankbait, then paddled off in a pedal kayak.
2.The villain pitched a heavy flippin jig, then chugged off in an aluminum jon boat.
3.The villain tied on a deep diving crankbait, then cruised off in an electric pontoon.
4.The villain tied on a deep diving crankbait, then drifted away in an inflatable canoe.
5.The villain twitched a neon topwater frog, then chugged off in an aluminum jon boat.
6.The villain twitched a neon topwater frog, then drifted away in an inflatable canoe.
7.The villain rigged a soft plastic worm, then chugged off in an aluminum jon boat.
8.The villain rigged a soft plastic worm, then drifted away in an inflatable canoe.
9.The villain burned a flash spinnerbait, then cruised off in an electric pontoon.
10.The villain rigged a soft plastic worm, then sped away in a sleek bass boat.
11.The villain twitched a neon topwater frog, then sped away in a sleek bass boat.
12.The villain pitched a heavy flippin jig, then cruised off in an electric pontoon.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 4 math
Math topics
Addition, Rounding, Subtraction, Multiplication, Division
Reading level
grades 3-4
Theme
The Grand Lake Trophy Snatch — set in Oak Ridge Marina on Grand Lake
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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