Grade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision

The Coconut Cup Caper

The golden trophy for the Coconut Island Grand Prix has gone missing right before the final race! A rogue racer swiped the prize from the winner's podium and zoomed off into the jungle track. We must find out who took it before the racers cross the starting line!

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	Kart Type	Special Gadget	Steering Style	Helmet Color	Track Hazard
Cruiser Clara	rocket booster kart	confetti cannon	right handed steering	hot pink helmet	slippery banana peels
Suzi Spark	heavy drill bumper	gummy slime launcher	right handed steering	bright orange helmet	deep mud puddles
Zoomer Zach	heavy drill bumper	gummy slime launcher	right handed steering	neon yellow helmet	deep mud puddles
Drift Dan	hover tread glider	confetti cannon	left handed steering	hot pink helmet	bumpy gravel paths
Dash Randal	heavy drill bumper	super magnet beam	right handed steering	hot pink helmet	bumpy gravel paths
Bella Burnout	rocket booster kart	turbo wind sail	right handed steering	hot pink helmet	bumpy gravel paths
Molly Miles	bubble shield cruiser	gummy slime launcher	right handed steering	hot pink helmet	bumpy gravel paths
Gaby Gas	heavy drill bumper	gummy slime launcher	right handed steering	hot pink helmet	slippery banana peels
Gears Greg	rocket booster kart	giant jump spring	right handed steering	neon yellow helmet	slippery banana peels
Roxy Rocket	rocket booster kart	turbo wind sail	right handed steering	bright orange helmet	deep mud puddles
Skid Sally	hover tread glider	turbo wind sail	right handed steering	hot pink helmet	bumpy gravel paths
Nitro Nick	rocket booster kart	giant jump spring	right handed steering	bright orange helmet	bumpy gravel paths
Maxie Motor	bubble shield cruiser	confetti cannon	right handed steering	bright orange helmet	deep mud puddles
Crash Carter	bubble shield cruiser	turbo wind sail	left handed steering	hot pink helmet	slippery banana peels
Turbo Tommy	rocket booster kart	confetti cannon	left handed steering	neon yellow helmet	deep mud puddles
Axel Adams	heavy drill bumper	gummy slime launcher	right handed steering	neon yellow helmet	bumpy gravel paths
Rusty Gears	bubble shield cruiser	giant jump spring	left handed steering	neon yellow helmet	bumpy gravel paths
Penny Shift	hover tread glider	super magnet beam	right handed steering	bright orange helmet	deep mud puddles
Buster Bumper	rocket booster kart	turbo wind sail	left handed steering	hot pink helmet	bumpy gravel paths
Vinnie Valve	bubble shield cruiser	super magnet beam	right handed steering	hot pink helmet	bumpy gravel paths
Pippa Piston	bubble shield cruiser	turbo wind sail	right handed steering	hot pink helmet	bumpy gravel paths

Clue 1

Rounding

The speed radar at the jungle checkpoint caught a blur, but it only shows speeds rounded 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.

2300

9000

110

3000

2900

370

430

2900

2300

7000

370

2300

9000

3700

170

430

2300

4300

3700

Round 2,322 to the nearest hundredT

Round 7,167 to the nearest thousandU

Round 3,695 to the nearest hundredM

Round 88 to the nearest tenA

Round 167 to the nearest tenG

Round 2,857 to the nearest hundredO

Round 67 to the nearest tenC

Round 431 to the nearest tenN

Round 368 to the nearest tenS

Round 33 to the nearest tenE

Round 107 to the nearest tenR

Round 2,872 to the nearest thousandD

Round 4,254 to the nearest hundredB

Round 8,564 to the nearest thousandH

0/14 letters found

Clue 2

Addition

To find the track locker key, we must add up all the spare rubber tires piled up in the pit crew garage.

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

8326

7291

8190

4958

5852

8326

8190

6714

8190

2937

2647

6527

2274

4958

9592

2132

8326

7291

8326

7291

8190

2132

6714

2132

9554

7291

8326

7291

7018

6527

2937

5668 + 2658 =T

5607 + 3947 =G

693 + 1581 =L

4711 + 2580 =H

3553 + 3161 =R

1396 + 736 =I

6659 + 2933 =W

3904 + 1948 =S

1549 + 1388 =D

1562 + 3396 =Y

1768 + 879 =O

2492 + 5698 =E

3264 + 3263 =N

3052 + 3966 =A

0/14 letters found

Clue 3

Subtraction

The main fuel tank is much lighter now. Subtracting the leftover fuel tells us exactly how much the thief used.

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

5524

5601

7970

4990

5539

5704

4864

6204

5601

7970

7635

6785

5024

5524

5601

7970

7050

7389

8198

1839

4990

8240

5704

4864

2808

7970

5630

1839

4864

5524

5601

6204

8201 - 2677 =T

7485 - 2621 =A

5868 - 844 =N

9772 - 1802 =E

10558 - 3169 =U

9016 - 4026 =Y

10915 - 3865 =B

9598 - 1400 =M

9318 - 3614 =R

9398 - 3768 =L

5887 - 286 =H

5372 - 3533 =P

11427 - 3187 =G

9773 - 3569 =S

5944 - 3136 =V

10103 - 3318 =O

7304 - 1765 =C

8023 - 388 =D

0/18 letters found

Clue 4

Multiplication facts (1-12)

The garage has a grid of toolboxes. Multiplying the rows and columns reveals the security code for the garage door.

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

110

100

110

100

110

100

10 × 4 =W

11 × 5 =M

7 × 5 =F

7 × 7 =I

10 × 10 =H

8 × 11 =K

1 × 1 =L

10 × 3 =T

9 × 5 =O

12 × 8 =E

1 × 10 =D

1 × 7 =A

10 × 11 =N

4 × 5 =P

5 × 5 =S

3 × 9 =U

0/16 letters found

Clue 5

Division facts (1-12) — the last clue

We found a box of energy snacks. Sharing them equally among the junior track marshals helps us open the clue safe.

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

99 ÷ 11 = ?

108 ÷ 9 = ?

96 ÷ 12 = ?

55 ÷ 5 = ?

8 ÷ 8 = ?

24 ÷ 12 = ?

35 ÷ 5 = ?

27 ÷ 9 = ?

5 ÷ 1 = ?

36 ÷ 9 = ?

66 ÷ 11 = ?

Step 2 — cross out the sentence with each answer

1.The villain smashes through the wooden barricade, then leaves a trail of sticky purple slime.

2.The villain splashes through the shallow creek, then blasts sparkly confetti everywhere.

3.The villain smashes through the wooden barricade, then bounces high into the palm trees.

4.The villain skids around the hair-pin turn, then bounces high into the palm trees.

5.The villain smashes through the wooden barricade, then accidentally turns on the magnet beam.

6.The villain skids around the hair-pin turn, then leaves a trail of sticky purple slime.

7.The villain skids around the hair-pin turn, then blasts sparkly confetti everywhere.

8.The villain skids around the hair-pin turn, then blows everyone back with a wind gust.

9.The villain splashes through the shallow creek, then leaves a trail of sticky purple slime.

10.The villain zooms past the grandstand, then blows everyone back with a wind gust.

11.The villain leaps off the mega ramp, then bounces high into the palm trees.

12.The villain splashes through the shallow creek, then blows everyone back with a wind gust.

Solve it

Name the culprit

Choose the one suspect left standing.

Answer Key — The Coconut Cup Caper

Culprit: Bella Burnout (rocket booster kart · turbo wind sail · right handed steering · hot pink helmet · bumpy gravel paths)

Clue 1 (Rounding): "THE RACER DOES NOT USE THE MAGNET BEAM"
Round 2,322 to the nearest hundred = 2300 (T) · Round 7,167 to the nearest thousand = 7000 (U) · Round 3,695 to the nearest hundred = 3700 (M) · Round 88 to the nearest ten = 90 (A) · Round 167 to the nearest ten = 170 (G) · Round 2,857 to the nearest hundred = 2900 (O) · Round 67 to the nearest ten = 70 (C) · Round 431 to the nearest ten = 430 (N) · Round 368 to the nearest ten = 370 (S) · Round 33 to the nearest ten = 30 (E) · Round 107 to the nearest ten = 110 (R) · Round 2,872 to the nearest thousand = 3000 (D) · Round 4,254 to the nearest hundred = 4300 (B) · Round 8,564 to the nearest thousand = 9000 (H)
Clue 2 (Addition): "THEY STEERED ONLY WITH THEIR RIGHT HAND"
5668 + 2658 = 8326 (T) · 5607 + 3947 = 9554 (G) · 693 + 1581 = 2274 (L) · 4711 + 2580 = 7291 (H) · 3553 + 3161 = 6714 (R) · 1396 + 736 = 2132 (I) · 6659 + 2933 = 9592 (W) · 3904 + 1948 = 5852 (S) · 1549 + 1388 = 2937 (D) · 1562 + 3396 = 4958 (Y) · 1768 + 879 = 2647 (O) · 2492 + 5698 = 8190 (E) · 3264 + 3263 = 6527 (N) · 3052 + 3966 = 7018 (A)
Clue 3 (Subtraction): "THEY CRASHED ON THE BUMPY GRAVEL PATHS"
8201 - 2677 = 5524 (T) · 7485 - 2621 = 4864 (A) · 5868 - 844 = 5024 (N) · 9772 - 1802 = 7970 (E) · 10558 - 3169 = 7389 (U) · 9016 - 4026 = 4990 (Y) · 10915 - 3865 = 7050 (B) · 9598 - 1400 = 8198 (M) · 9318 - 3614 = 5704 (R) · 9398 - 3768 = 5630 (L) · 5887 - 286 = 5601 (H) · 5372 - 3533 = 1839 (P) · 11427 - 3187 = 8240 (G) · 9773 - 3569 = 6204 (S) · 5944 - 3136 = 2808 (V) · 10103 - 3318 = 6785 (O) · 7304 - 1765 = 5539 (C) · 8023 - 388 = 7635 (D)
Clue 4 (Multiplication facts (1-12)): "WE FOUND A HOT PINK HELMET IN THE PIT STOP"
10 × 4 = 40 (W) · 11 × 5 = 55 (M) · 7 × 5 = 35 (F) · 7 × 7 = 49 (I) · 10 × 10 = 100 (H) · 8 × 11 = 88 (K) · 1 × 1 = 1 (L) · 10 × 3 = 30 (T) · 9 × 5 = 45 (O) · 12 × 8 = 96 (E) · 1 × 10 = 10 (D) · 1 × 7 = 7 (A) · 10 × 11 = 110 (N) · 4 × 5 = 20 (P) · 5 × 5 = 25 (S) · 3 × 9 = 27 (U)
Clue 5 (Division facts (1-12)): surviving statement (box 10) → Bella Burnout
99 ÷ 11 = 9 · 108 ÷ 9 = 12 · 96 ÷ 12 = 8 · 55 ÷ 5 = 11 · 8 ÷ 8 = 1 · 24 ÷ 12 = 2 · 35 ÷ 5 = 7 · 27 ÷ 9 = 3 · 5 ÷ 1 = 5 · 36 ÷ 9 = 4 · 66 ÷ 11 = 6

About this mystery

Grade level: Grade 4 math
Math topics: Rounding, Addition, Subtraction, Multiplication, Division
Reading level: grades 3-4
Theme: The Coconut Cup Caper — set in Coconut Island Speedway
Format: Interactive online & printable worksheet with answer key
Solution: One unique, verified culprit among 21 suspects

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