## Fixed Integer Subtraction to 12 Worksheets

#### Aligned To Common Core Standard:

**Grade 1 Operations** - Related to 1.OA.A.1

What is Fixed Integer Subtraction? In contrast to the floating point, a fixed-point number has a decimal point with a fixed position. Each number has a number of bits for the integer part and another number of bits for the fractional part with I integer bits, and f fractional bits, the notation for that representation. Note that the most commonly used technique is to use two-complement if negative numbers are to be represented as well. Thus, there is no explicit sign bit as in floating-point. The resolution of a fixed-point number is dictated by the number of fractional bits, f, and the resolution is 2−f. This is the smallest unit that can be handled using this representation. Addition and subtraction are performed by treating the fixed-point numbers as integers and adding them using standard addition/subtraction. In terms of the bit count of the result. In addition to the fixed-point numbers requires that the binary points of the addends be aligned. Later the addition or subtraction is performed. Fixed-point subtraction is equivalent to addition while making use of the two's complement value for any kind of negative values. In subtraction, the addends must be sign extended to match the length of each other. These worksheets have students work towards mastery of subtraction by having a set subtrahend for all the problems on that page.

### Printable Worksheets And Lessons

- What Is A Fact Family?- It took 9 teachers 3 hours to agree on a full explanation for this one!
- Complete the Fact Families - Fill in the missing part or whole. Love the trees.
- Subtraction Facts Chart 1-6 - All the facts are here from zero to eleven.
- Subtraction Facts Chart 7-12 - Round two, but we start at seven.
- Subtraction Facts Chart with Missing Numbers for 1 and 2 - The rest of this set can be found below.

#### Subtraction Facts Charts

Here are the remaining sets.

- Missing Numbers for 3 and 4 - These are fix values for the subtrahend portion of the problem.
- Missing Numbers for 5 and 6 - Get yourself into a rhythm with these types of problems.
- Missing Numbers for 7 and 8 - Once you get the hang of these it becomes automatic.
- Missing Numbers for 9 and 10 - The tens are pretty simple to work with, pretty much the same as one.

#### Fixed Number Subtraction Sheets

We subtract by a set number. You will find some duplicates throughout the sheet for repeated practice

- Zero Subtraction - Solve for the following subtraction problems.
- Subtracting One - These problems are spread into three columns.
- Subtracting Two - You might want to count out these problems.
- Subtracting Three - This will help you form a mental math wave.
- Subtracting Four - See if taken away four does a body good.
- Subtracting Five - Fun fact: Five is the only prime number that is the sum of two consecutive primes.
- Six - This loosely referred to as "the first perfect number".
- Seven - That good ole lucky number.
- Eight - Turned on it side it means an never ending number.
- Nine - Fun fact: September is the ninth month of the year and also is composed of nine letters.
- Ten - The Roman numeral that represents this is the good ole "X".
- Eleven - Cool fact about eleven: World War I ended on the eleventh day of the eleventh month at the eleventh hour of the day.
- Twelve - The largest integer that is composed of one syllable.