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Key Terms
Rules and Regulations
Addition
Subtraction
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100

The set of numbers less than zero. 

negative numbers

100

The rule for adding two numbers with the same sign. 

add the digits and keep the sign

100

-20 + (-14) = 

-34

100

-7 - 12 = 

-0.3

100

The set of numbers that can be written as a fraction. (The denominator cannot be zero.)

rational numbers

200

The distance between a number and zero.

absolute value

200

The rule for adding two numbers with different signs.

subtract the digits and take the sign of the number with the bigger absolute value
200

19 + (-7) = 

12

200

2.7 - 3 =

-0.3

200

-40 - (-16) = 

-24

300

Two different numbers that have the same absolute value.

opposite numbers or additive inverses

300

Having a greater absolute value means.

the distance from zero is farther

300

-15.7 + 9.2 = 

-6.5

300

7.6 - (-10) = 

17.7

300

-10 + 6 - 4 = 

-8

400

The set of whole numbers and their opposites.

integers

400

Will the answer be positive or negative?

-13 - (-2) 

Negative

400

-1.8 + 3.3 = 

1.5

400

83.36 - (-46.50) = 

129.86

400

-5+(-3)+(-12)+(-23)+2= 

-41

500

Numbers that can be written as a fraction

Rational Numbers

500

Will the answer be positive or negative?

11 - (-5) = 

Positive

500

3/5 + 4/5 = 

1 2/5

500

-2/3 - (-1/3) = 


-1/3

500

-10-12-11-13 = 

-46