Blastoff Subtraction Worksheet Cosmic Math to 10 Mission 1
Blastoff Subtraction
Astronaut:
Launch Date:
Easy Directions:
Rockets and saucers are blasting off! Put an X on the items that flew away, count what is left, and write the answer in the box.
Example: 🛸 ✕🛸 2 − 1 = 1
1
Cross Out to Blast Off!
(Put an X over items that blast away)
🚀 🚀 🚀 🚀 🚀
Cross out 2 rockets
5 − 2 =
🛸 🛸 🛸 🛸 🛸 🛸 🛸
Cross out 3 saucers
7 − 3 =
⭐ ⭐ ⭐ ⭐ ⭐ ⭐
Cross out 4 stars
6 − 4 =
🪐 🪐 🪐 🪐 🪐 🪐 🪐 🪐
Cross out 5 planets
8 − 5 =
2
Cosmic Ten-Frames
(X out the dots, count what remains)
Count the stars!
10 stars in the frame
10 − 4 =
9 stars in the frame
9 − 3 =
7 stars in the frame
7 − 5 =
6 stars in the frame
6 − 2 =
3
Supernova Fast Facts!
(Count back or use mental math)
4 − 1 =
9 − 5 =
7 − 2 =
10 − 3 =
🚀 Astronaut Mission Rating: Color your launch stars!
⭐ ⭐ ⭐
Galaxy Subtraction Worksheet Cosmic Math to 20 Mission 2
Galaxy Subtraction
Astronaut:
Launch Date:
Easy Directions:
Subtracting numbers up to 20! Put an X on the dots to take away, or hop backward on the rocket number line.
Example: 12 − 2 = 10
1
Double Ten-Frame Countdown
(Put an X on dots to subtract)
Count remaining dots!
15 total stars • X out 4
15 − 4 =
18 total stars • X out 5
18 − 5 =
14 total stars • X out 6
14 − 6 =
20 total stars • X out 7
20 − 7 =
2
Rocket Hop-Back Track
(Start at the big number, hop back to subtract)
1011121314151617181920
Start at 16, hop back 5 times
16 − 5 =
1011121314151617181920
Start at 19, hop back 4 times
19 − 4 =
0246810121314161820
Start at 13, hop back 6 times
13 − 6 =
3
Deep Space Fast Facts!
(Use your mental math strategies)
18 − 3 =
12 − 5 =
16 − 8 =
20 − 5 =
🪐 Galaxy Explorer Rating: Color your launch stars!
⭐ ⭐ ⭐
Cosmic Challenge Subtraction Worksheet Two-Digit Subtraction Mission 3: Challenge
Cosmic Challenge Subtraction
Commander:
Launch Date:
Easy Directions:
Subtract the Ones first, then the Tens. If the bottom digit is bigger, regroup 1 ten into 10 ones using the small top boxes!
Regroup Tip More on floor? Go next door!
1
Vertical Launch Pad
(Show regrouping if needed)
T = Tens O = Ones
Problem 1
4 8
− 2 3
Problem 2
6 2
− 3 7
Problem 3
7 5
− 2 9
Problem 4
8 4
− 4 6
Problem 5
9 1
− 5 8
Across Zero!
5 0
− 2 4
2
Mission Control Stories
(Write the number sentence and solve)
Fuel Check:
Rocket Orion loaded 85 liters of rocket fuel. It burned 38 liters escaping orbit. How many liters remain?
Equation:
Answer:
Asteroid Radar:
Space Station Nova detected 73 space rocks . Astronauts safely deflected 47 rocks . How many are left?
Equation:
Answer:
3
Supernova Quick Challenge
(Subtract the tens and ones in your head)
55 − 15 =
78 − 20 =
64 − 32 =
99 − 45 =
🌠 Space Commander Rating: Color your mastery stars!
⭐ ⭐ ⭐
