Grade 4Reading: grades 3-4RoundingAdditionSubtractionMultiplicationDivision
The Great Sky-Island Chase
The famous Gold-Gear Compass has been stolen from the high sky-dock! Chief Mechanic Barnaby needs our help to find the sneaky Sky Bandit before they fly away from Aero-Bay.
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 | Escape Gear | Gadget Used | Secret Habit | Headwear | Biggest Fear |
|---|---|---|---|---|---|
| Propeller Penny | Grapple Hook | Net Shooter | Right-Handed | Green Bandana | Banana Peels |
| Jetpack Jack | Spring Shoes | Smoke Bombs | Left-Handed | Blue Goggles | Shiny Coins |
| Compass Carla | Propeller Hat | Smoke Bombs | Left-Handed | Red Helmet | Shiny Coins |
| Captain Clara | Glider Wings | Sparkler Wand | Right-Handed | Blue Goggles | Loud Noises |
| Gizmo Gary | Steam Jetpack | Net Shooter | Right-Handed | Blue Goggles | Shiny Coins |
| Cloudy Chloe | Glider Wings | Laser Pointer | Right-Handed | Green Bandana | Loud Noises |
| Balloon Bill | Steam Jetpack | Net Shooter | Right-Handed | Green Bandana | Banana Peels |
| Rotor Ron | Spring Shoes | Net Shooter | Right-Handed | Green Bandana | Loud Noises |
| Sprocket Sue | Spring Shoes | Flash Powder | Left-Handed | Blue Goggles | Shiny Coins |
| Zephyr Zach | Spring Shoes | Sparkler Wand | Left-Handed | Green Bandana | Shiny Coins |
| Gears Gabby | Propeller Hat | Laser Pointer | Right-Handed | Green Bandana | Banana Peels |
| Wings Wyatt | Grapple Hook | Sparkler Wand | Right-Handed | Green Bandana | Banana Peels |
| Drifter Dan | Spring Shoes | Laser Pointer | Right-Handed | Red Helmet | Banana Peels |
| Altitude Al | Steam Jetpack | Sparkler Wand | Right-Handed | Blue Goggles | Banana Peels |
| Bessie Barnstormer | Spring Shoes | Flash Powder | Left-Handed | Red Helmet | Banana Peels |
| Professor Pips | Steam Jetpack | Laser Pointer | Left-Handed | Blue Goggles | Banana Peels |
| Flyer Felix | Spring Shoes | Flash Powder | Left-Handed | Green Bandana | Banana Peels |
| Mechanic Max | Propeller Hat | Flash Powder | Right-Handed | Red Helmet | Loud Noises |
| Aero Amy | Spring Shoes | Laser Pointer | Right-Handed | Green Bandana | Banana Peels |
| Pilot Pete | Spring Shoes | Flash Powder | Left-Handed | Green Bandana | Loud Noises |
| Aviator Abby | Grapple Hook | Smoke Bombs | Right-Handed | Blue Goggles | Banana Peels |
Clue 1
Rounding
Our cloud radar can only estimate the bandit's speed. Round the sensor readings to find the first 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
2000
230
3700
3000
7000
370
5000
290
T
2000
5000
170
3700
900
370
170
T
2000
230
7000
2900
3700
7000
900
700
7000
300
130
430
3700
300
1300
7000
370
5000
Round 1,817 to the nearest thousandT
Round 4,867 to the nearest thousandD
Round 3,067 to the nearest thousandB
Round 3,718 to the nearest hundredE
Round 319 to the nearest hundredR
Round 1,314 to the nearest hundredW
Round 132 to the nearest tenK
Round 433 to the nearest tenL
Round 6,515 to the nearest thousandA
Round 290 to the nearest tenI
Round 668 to the nearest hundredP
Round 882 to the nearest hundredS
Round 2,888 to the nearest hundredV
Round 232 to the nearest tenH
Round 167 to the nearest tenO
Round 368 to the nearest tenN
0/16 letters found
Clue 2
Addition
Chief Barnaby found lists of stolen airship parts in two different hangars. Add them up to unlock the next 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
8665
9392
5461
5189
5762
7749
5654
9272
T
8665
7242
3056
5461
5654
T
8665
9392
5461
9272
4879
4879
9272
8732
9392
T
8665
9392
5762
7749
5654
2801
8362
4879
T
8665
9392
5461
3975
5461
8081
5489 + 3176 =T
2498 + 2963 =E
3830 + 1932 =A
863 + 1938 =F
6050 + 3222 =I
5007 + 4385 =H
3676 + 5056 =G
1849 + 1207 =S
1552 + 3327 =R
2107 + 1868 =K
2524 + 5838 =O
5163 + 2586 =N
2944 + 2245 =B
3859 + 3383 =U
3920 + 4161 =Y
1931 + 3723 =D
0/16 letters found
Clue 3
Subtraction
The getaway glider dropped heavy iron weights to escape. Subtract the lost cargo weight to find where they went.
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
4838
5846
3881
8968
6714
1847
1847
6265
6714
5995
1955
1847
6714
6775
6775
3881
6551
6265
5995
6551
5992
3881
1847
1847
4018
5995
3530
6265
5995
6265
5995
6265
6775
3881
3881
1847
1955
7816 - 2978 =T
9499 - 531 =V
3137 - 1290 =L
11125 - 4411 =I
6173 - 2643 =B
8077 - 4196 =E
8759 - 2494 =A
8949 - 2174 =P
8439 - 1888 =D
9238 - 3243 =N
10538 - 4546 =F
5122 - 1104 =O
10345 - 4499 =H
2170 - 215 =S
0/14 letters found
Clue 4
Multiplication facts (1-12)
The thief ran through a maze of shipping crates stacked in equal rows. Multiply the crates to reveal their secret trail.
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
55
22
25
48
48
9
63
A
55
9
132
A
55
9
A
55
6
A
55
56
132
25
66
3
3
48
132
9
48
A
55
25
49
88
48
A
55
96
25
56
88
96
3
5 × 11 =A
11 × 8 =H
8 × 12 =I
8 × 6 =E
7 × 9 =B
11 × 12 =D
1 × 3 =P
2 × 11 =G
6 × 11 =O
7 × 7 =T
2 × 3 =W
1 × 9 =N
5 × 5 =R
7 × 8 =S
0/14 letters found
Clue 5
Division facts (1-12) — the last clue
We recovered a bag of sky-maps that must be shared equally among the search planes. Divide the maps to catch the bandit.
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
110 ÷ 10 = ?
80 ÷ 8 = ?
96 ÷ 8 = ?
64 ÷ 8 = ?
6 ÷ 1 = ?
54 ÷ 6 = ?
21 ÷ 3 = ?
6 ÷ 2 = ?
8 ÷ 8 = ?
24 ÷ 6 = ?
60 ÷ 12 = ?
Step 2 — cross out the sentence with each answer
1.The villain bounced over the rooftops with spring shoes, then fired a sticky net shooter.
2.The villain swung away on a grapple hook, then fired a sticky net shooter.
3.The villain drifted off using glider wings, then blinded the guards with flash powder.
4.The villain swung away on a grapple hook, then dropped thick smoke bombs.
5.The villain drifted off using glider wings, then waved a bright sparkler wand.
6.The villain zipped skyward wearing a propeller hat, then fired a sticky net shooter.
7.The villain zipped skyward wearing a propeller hat, then blinded the guards with flash powder.
8.The villain bounced over the rooftops with spring shoes, then dropped thick smoke bombs.
9.The villain drifted off using glider wings, then dropped thick smoke bombs.
10.The villain zoomed into the clouds with a steam jetpack, then fired a sticky net shooter.
11.The villain bounced over the rooftops with spring shoes, then tricked the radar with a laser pointer.
12.The villain zipped skyward wearing a propeller hat, then tricked the radar with a laser pointer.
Solve it
Name the culprit
Choose the one suspect left standing.
Answer Key — The Great Sky-Island Chase
Culprit: Propeller Penny (Grapple Hook · Net Shooter · Right-Handed · Green Bandana · Banana Peels)
- Clue 1 (Rounding): "THE BANDIT DOES NOT HAVE A SPARKLER WAND"Round 1,817 to the nearest thousand = 2000 (T) · Round 4,867 to the nearest thousand = 5000 (D) · Round 3,067 to the nearest thousand = 3000 (B) · Round 3,718 to the nearest hundred = 3700 (E) · Round 319 to the nearest hundred = 300 (R) · Round 1,314 to the nearest hundred = 1300 (W) · Round 132 to the nearest ten = 130 (K) · Round 433 to the nearest ten = 430 (L) · Round 6,515 to the nearest thousand = 7000 (A) · Round 290 to the nearest ten = 290 (I) · Round 668 to the nearest hundred = 700 (P) · Round 882 to the nearest hundred = 900 (S) · Round 2,888 to the nearest hundred = 2900 (V) · Round 232 to the nearest ten = 230 (H) · Round 167 to the nearest ten = 170 (O) · Round 368 to the nearest ten = 370 (N)
- Clue 2 (Addition): "THE BANDIT USED THEIR RIGHT HAND FOR THE KEY"5489 + 3176 = 8665 (T) · 2498 + 2963 = 5461 (E) · 3830 + 1932 = 5762 (A) · 863 + 1938 = 2801 (F) · 6050 + 3222 = 9272 (I) · 5007 + 4385 = 9392 (H) · 3676 + 5056 = 8732 (G) · 1849 + 1207 = 3056 (S) · 1552 + 3327 = 4879 (R) · 2107 + 1868 = 3975 (K) · 2524 + 5838 = 8362 (O) · 5163 + 2586 = 7749 (N) · 2944 + 2245 = 5189 (B) · 3859 + 3383 = 7242 (U) · 3920 + 4161 = 8081 (Y) · 1931 + 3723 = 5654 (D)
- Clue 3 (Subtraction): "THE VILLAIN SLIPPED AND FELL ON BANANA PEELS"7816 - 2978 = 4838 (T) · 9499 - 531 = 8968 (V) · 3137 - 1290 = 1847 (L) · 11125 - 4411 = 6714 (I) · 6173 - 2643 = 3530 (B) · 8077 - 4196 = 3881 (E) · 8759 - 2494 = 6265 (A) · 8949 - 2174 = 6775 (P) · 8439 - 1888 = 6551 (D) · 9238 - 3243 = 5995 (N) · 10538 - 4546 = 5992 (F) · 5122 - 1104 = 4018 (O) · 10345 - 4499 = 5846 (H) · 2170 - 215 = 1955 (S)
- Clue 4 (Multiplication facts (1-12)): "A GREEN BANDANA WAS DROPPED NEAR THE AIRSHIP"5 × 11 = 55 (A) · 11 × 8 = 88 (H) · 8 × 12 = 96 (I) · 8 × 6 = 48 (E) · 7 × 9 = 63 (B) · 11 × 12 = 132 (D) · 1 × 3 = 3 (P) · 2 × 11 = 22 (G) · 6 × 11 = 66 (O) · 7 × 7 = 49 (T) · 2 × 3 = 6 (W) · 1 × 9 = 9 (N) · 5 × 5 = 25 (R) · 7 × 8 = 56 (S)
- Clue 5 (Division facts (1-12)): surviving statement (box 2) → Propeller Penny110 ÷ 10 = 11 · 80 ÷ 8 = 10 · 96 ÷ 8 = 12 · 64 ÷ 8 = 8 · 6 ÷ 1 = 6 · 54 ÷ 6 = 9 · 21 ÷ 3 = 7 · 6 ÷ 2 = 3 · 8 ÷ 8 = 1 · 24 ÷ 6 = 4 · 60 ÷ 12 = 5
About this mystery
- Grade level
- Grade 4 math
- Math topics
- Rounding, Addition, Subtraction, Multiplication, Division
- Reading level
- grades 3-4
- Theme
- The Great Sky-Island Chase — set in the floating sky-islands of Aero-Bay
- Format
- Interactive online & printable worksheet with answer key
- Solution
- One unique, verified culprit among 21 suspects