Math Crackers
🚀 Space, Dinosaurs, Robots, PiGrade 1Reading: grades 1-2Place valueAdditionSubtractionRoundingMissing addends

The Dino-Bot Space Heist

A sneaky space pirate snuck onto Planet Blocktopia and stole the golden power cube! Detective, solve the math clues to track down the villain.

Suspects

Possible suspects

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

21 of 21 still in play
NameMain ToolLoot ItemDominant HandRobot WiresFear
Dino DanPlasma CannonPirate CompassLeft HandedBright Blue CablesShiny Mirrors
Laser LeahLaser SwordDino GemRight HandedBright Blue CablesShiny Mirrors
Sprocket SyJet PackPower CrystalRight HandedBright Blue CablesShiny Mirrors
Orbit OllieDigging DrillPirate CompassLeft HandedDark Red AntennaeShiny Mirrors
Pixel PennyBlock ShieldPirate CompassLeft HandedBright Blue CablesShiny Mirrors
Voxel VeraBlock ShieldPirate CompassRight HandedBright Blue CablesShiny Mirrors
Patchy PetePlasma CannonAstro MapRight HandedDark Red AntennaeLoud Whistles
Sparky PamBlock ShieldPirate CompassRight HandedDark Red AntennaeShiny Mirrors
Radar RayLaser SwordPower CrystalRight HandedBright Blue CablesShiny Mirrors
Fang FionaDigging DrillCyber KeyRight HandedNeon Green WiresShiny Mirrors
Matrix MaxDigging DrillPower CrystalLeft HandedBright Blue CablesShiny Mirrors
Cyber CarlLaser SwordAstro MapLeft HandedDark Red AntennaeSoapy Water
Turbo TimPlasma CannonPirate CompassRight HandedDark Red AntennaeShiny Mirrors
Scrappy SamDigging DrillPirate CompassLeft HandedNeon Green WiresLoud Whistles
Captain AxelLaser SwordDino GemLeft HandedBright Blue CablesLoud Whistles
Rusty RexPlasma CannonCyber KeyRight HandedBright Blue CablesShiny Mirrors
Astro AnnLaser SwordAstro MapRight HandedBright Blue CablesLoud Whistles
Bolt BenLaser SwordPirate CompassLeft HandedDark Red AntennaeSoapy Water
Nova NedPlasma CannonDino GemRight HandedBright Blue CablesLoud Whistles
Echo EvaBlock ShieldDino GemLeft HandedBright Blue CablesSoapy Water
Boffin BotLaser SwordCyber KeyLeft HandedNeon Green WiresSoapy Water
Clue 1

Place value

Captain Axel scanned the spaceship control board. Reading the tens and ones gave a secret code.

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
82
11
66
59
80
46
46
38
80
29
92
21
66
79
29
21
T
82
11
38
59
66
38
92
80
29
21
77
66
55
What number has 8 tens and 2 ones?T
What number has 7 tens and 7 ones?G
What number has 8 tens and 0 ones?I
What number has 1 ten and 1 one?H
What number has 6 tens and 6 ones?E
What number has 5 tens and 9 ones?V
What number has 9 tens and 2 ones?D
What number has 3 tens and 8 ones?A
What number has 2 tens and 1 one?O
What number has 7 tens and 9 ones?S
What number has 4 tens and 6 ones?L
What number has 5 tens and 5 ones?M
What number has 2 tens and 9 ones?N
0/13 letters found
Clue 2

Addition

Barnaby counted the extra block supplies on deck. Adding them together revealed a new lead.

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

W
16
10
5
3
20
6
6
6
18
W
16
18
17
10
14
15
5
15
18
3
11
20
11
17
12
2
12
5
5 + 11 =W
4 + 7 =D
2 + 4 =S
1 + 2 =N
1 + 1 =B
10 + 10 =E
10 + 8 =A
4 + 1 =T
4 + 8 =O
4 + 6 =I
9 + 6 =H
7 + 7 =G
11 + 6 =R
0/13 letters found
Clue 3

Subtraction

Zog checked the power tanks after the blast. Subtracting the spent fuel showed the 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.

T
1
15
9
18
19
2
2
4
19
16
11
4
16
8
11
12
3
10
15
19
16
5
3
19
11
11
12
11
10
9 - 8 =T
18 - 3 =H
19 - 1 =V
14 - 5 =E
11 - 7 =A
20 - 1 =I
19 - 3 =N
17 - 7 =S
12 - 7 =Y
10 - 2 =F
16 - 4 =O
8 - 6 =L
14 - 3 =R
5 - 2 =M
0/14 letters found
Clue 4

Rounding

The star radar screen rounded all numbers to the nearest ten. The rounded total gave a 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.

F
70
90
60
700
40
50
800
600
400
80
200
50
900
60
30
20
300
50
900
30
500
300
200
500
20
30
700
30
Round 69 to the nearest tenF
Round 54 to the nearest tenB
Round 42 to the nearest tenD
Round 214 to the nearest hundredT
Round 560 to the nearest hundredI
Round 78 to the nearest tenH
Round 63 to the nearest tenU
Round 526 to the nearest hundredS
Round 89 to the nearest tenO
Round 432 to the nearest hundredG
Round 862 to the nearest hundredL
Round 844 to the nearest hundredR
Round 308 to the nearest hundredA
Round 660 to the nearest hundredN
Round 28 to the nearest tenE
Round 20 to the nearest tenC
0/16 letters found
Clue 5

Missing addends — the last clue

Sparky needed more fuel cells to open the vault. Finding the missing addend unlocked the clue.

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
2 + ___ = 10
1 + ___ = 8
6 + ___ = 11
2 + ___ = 8
8 + ___ = 10
5 + ___ = 15
6 + ___ = 15
6 + ___ = 7
3 + ___ = 14
1 + ___ = 13
3 + ___ = 6
Step 2 — cross out the sentence with each answer
1.The villain flew with a jet pack, then scanned an astro map.
2.The villain swung a laser sword, then scanned an astro map.
3.The villain flew with a jet pack, then used a cyber key.
4.The villain swung a laser sword, then charged a power crystal.
5.The villain blasted a plasma cannon, then used a cyber key.
6.The villain dug with a digging drill, then grabbed a dino gem.
7.The villain flew with a jet pack, then charged a power crystal.
8.The villain blocked with a block shield, then checked a pirate compass.
9.The villain flew with a jet pack, then checked a pirate compass.
10.The villain swung a laser sword, then grabbed a dino gem.
11.The villain blasted a plasma cannon, then grabbed a dino gem.
12.The villain blocked with a block shield, then scanned an astro map.
Solve it

Name the culprit

Choose the one suspect left standing.

About this mystery

Grade level
Grade 1 math
Math topics
Place value, Addition, Subtraction, Rounding, Missing addends
Reading level
grades 1-2
Theme
The Dino-Bot Space Heist — set in Planet Blocktopia
Format
Interactive online & printable worksheet with answer key
Solution
One unique, verified culprit among 21 suspects

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