Space Subtraction is a drill and practice package that presents whole number subtraction problems which do not involve regrouping. The programs are sequenced according to difficulty.
Cosmic Creature - Drills on whole number subtraction facts with single-digit numbers. (25 problems)
Blast Off - Drills on whole number subtraction facts with a two-digit number minus a one-digit number. (25 problems)
Zemoon Walk - Drills on whole number subtraction with one- or two-digit numbers and no regrouping. (24 problems)
Space Match - Drills on whole number subtraction with numbers of up to three digits and no regrouping. (20 problems)
Shuttle Trip - A timed drill which reviews problems from all four preceding programs.
Notes
Disk info for Mastering_Math_Space_Subtraction_v1.0_1985_MECC_US.do:
File Name: a2_Mastering_Math_Space_Subtraction_v1.0_1985_MECC_US/Mastering_Math_Space_Subtraction_v1.0_1985_MECC_US.do
Disk Name: DISK VOLUME #41
Physical Size (bytes): 143360
Free Space (bytes): 768
Used Space (bytes): 142592
Physical Size (KB): 140
Free Space (KB): 0
Used Space (KB): 139
Archive Order: DOS
Disk Format: DOS 3.3
Total Sectors: 560
Free Sectors: 3
Used Sectors: 557
Tracks On Disk: 35
Sectors On Disk: 16
Disk directory for Mastering_Math_Space_Subtraction_v1.0_1985_MECC_US.do:
a2_Mastering_Math_Space_Subtraction_v1.0_1985_MECC_US/Mastering_Math_Space_Subtraction_v1.0_1985_MECC_US.do DISK VOLUME #41
I 000 [SPACE SUBTRACTION /0605]
* A 005 HELLO
* B 012 LOGO
* A 011 CREATURE
* A 008 EXIT MANAGER
* B 022 PPRINT.OBJ
* B 008 MATH.FNT
* A 029 ZEMOON WALK
* A 019 PRINTER SUPPORT
* A 022 MANAGEMENT OPTIONS
* A 026 BLASTOFF
* B 002 MECC$$DISK
* A 030 SHUTTLE
* A 019 COMMON.LIB
B 002 PRINTER COMMANDS.BIN
* B 031 SUBUTIL.OBJ
* B 018 SPACE.IMA
* B 002 CHECK FILE
B 002 T.O.FILE
T 015 STFILE
* B 024 BLAST2.IMA
* A 026 SPACE MATCH
* B 005 RNH.OBJ
* B 004 LUNAR.OBJ
* B 016 S7.IMA
* B 016 BLAST1.IMA
* B 037 CREATURE.IMA
* B 017 S1.IMA
* B 015 LUNAR.IMA
* A 018 MENU
* B 011 S4.IMA
* B 012 MENU.PCK
* B 008 BUGS38.IMA
* B 007 SPACE2.IMA
* A 003 S.LIB
DOS 3.3 format; 768 bytes free; 142,592 bytes used.
Reviewer:HmTrz
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favoritefavoritefavoritefavoritefavorite -
March 29, 2016 Subject:
Nice
Never played a really old game like this before so I was kind of skeptic whether or not I would like it. However, it was really good. If I was new to addition I would really want more games like this.