Adding & Subtracting Integers with counters

Front

What is an integer?

Back

An integer is a whole number that can be positive, negative, or zero.

Front

What does a zero pair consist of?

Back

A zero pair consists of one positive integer and one negative integer that cancel each other out, such as -1 and +1.

Front

What is the result of adding a positive integer and a negative integer?

Back

The result depends on the absolute values of the integers. If the positive integer is larger, the result is positive; if the negative integer is larger, the result is negative.

Front

What is the sum of -3 and +3?

Back

The sum of -3 and +3 is 0.

Front

How do you represent -4 + 5 using counters?

Back

You would use 4 red counters (for -4) and 5 yellow counters (for +5). The yellow counters will cancel out the red ones, leaving you with 1 yellow counter.

Front

What is the addition equation for the expression -2 + -4?

Back

The addition equation is -2 + -4 = -6.

Front

What is the result of adding two negative integers?

Back

The result of adding two negative integers is always a negative integer.

Front

What does the expression +6 + (-3) equal?

Back

The expression +6 + (-3) equals +3.

Front

What is the definition of subtraction in terms of integers?

Back

Subtraction of integers can be thought of as adding the opposite. For example, a - b is the same as a + (-b).

Front

What is the result of -5 + 2?

Back

The result of -5 + 2 is -3.