FLIGHT LOGBOOK

MINUS MISSION

Standard Operating Procedure: Vertical Alignment

APPROVED GRADE 4 SUBTRACTION

PILOT NAME:

FLIGHT DATE:

STAGE 1: CRUISING ALTITUDE

Welcome to the flight deck! 4-digit subtraction is easy when you keep your place value digits perfectly stacked. Complete these 6 problems on the grid below. No borrowing or regrouping is required for this stage. Keep it steady!

1

Th

H

T

O

8

7

5

4

-

3

4

2

1

2

Th

H

T

O

5

9

6

8

-

1

5

3

2

3

Th

H

T

O

9

4

7

6

-

6

2

4

3

4

Th

H

T

O

7

6

3

9

-

2

5

1

8

5

Th

H

T

O

6

8

8

5

-

4

3

2

1

6

Th

H

T

O

4

5

9

7

-

2

1

3

5

CO-PILOT CHECK: Sign off to verify calculations: __________________

NEXT STOP: LEVEL 2

FLIGHT LOGBOOK

MINUS MISSION

Standard Operating Procedure: Vertical Alignment

IN FLY-THRU GRADE 4 SUBTRACTION

STAGE 2: CLOUDY SKIES

Turbulence detected! Some columns don't have enough value to subtract from. You must borrow / regroup from the place value immediately to the left. Cross out the digits carefully, write your new values in the dashed regrouping boxes, and solve.

7

Th

H

T

O

6

5

8

2

-

2

3

4

7

8

Th

H

T

O

7

4

2

9

-

3

1

8

4

9

Th

H

T

O

8

2

6

4

-

4

5

1

3

10

Th

H

T

O

5

3

1

6

-

2

1

5

8

11

Th

H

T

O

9

1

4

5

-

6

3

8

2

12

Th

H

T

O

4

2

5

3

-

1

6

7

5

CO-PILOT CHECK: Sign off to verify calculations: __________________

NEXT STOP: LEVEL 3

FLIGHT LOGBOOK

MINUS MISSION

Standard Operating Procedure: Vertical Alignment

DANGER AREA GRADE 4 SUBTRACTION

STAGE 3: STORMY WEATHER

Extreme challenge! You've entered a zero-gravity storm corridor. When you need to borrow but the neighbor is a zero (0), you must jump further left to the first non-zero digit, borrow there, and pass it back across. Track every hop in your regrouping boxes!

13

Th

H

T

O

7

0

0

5

-

3

4

2

1

14

Th

H

T

O

5

0

0

0

-

1

8

3

4

15

Th

H

T

O

8

0

4

0

-

2

3

6

7

16

Th

H

T

O

6

0

0

3

-

2

4

7

5

MISSION DEBRIEF: PILOT REFLECTION

1. Which problem in Stage 3 felt like the strongest turbulence, and how did you navigate through it?

2. Complete the flight rule: "When regrouping across a zero, I must first visit the column in the..."

FLIGHT COMMAND: Mission certified complete: _______________________________

MISSION SUCCESS

Minus Mission Worksheets

Minus Mission Worksheets

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