Integers Flashcards
Computation with Integers (MAT4-INT-C-01)
BODMAS
brackets, operations, division & multiplication, addition & subtraction
which direction does subtraction go on a number line
left
what direction does addition go on a number line
right
<
less than
greater than
>
Chelsea buys too many $2 ramen cups, one every day after school, in one week. However, she receives $5 for Chinese New Year at the end of the week. Write an equation and an answer to how much money she loses/gains this week.
5 x (-2) + 5
= -10 + 5
= -5
(Chelsea stop wasting money)
Elina spends too much money on her friends’ birthday presents in February, $45 each for two people. In March, she spends $5 a week for four weeks on after-school snacks. She then receives $100 for Persian New Year in April. How much money has she lost/gained over the three months if she doesn’t spend/gain any other money?
- $10
(she loses 10 dollars)
32 x 3 / (10-7) + 68
100
1.which part should be completed first in:
36 / 12 x ( 7 + 4) - 3^3
2.What is the answer?
- 3^3
- 6
(-56+60) x 2^3
= (-56+60) x 8
= 4 x 8
32
In an addition or subtraction equation that looks like:
+(+) or −(−)
where the signs are the same
Is the answer positive or negative?
positive
In an addition or subtraction equation that looks like:
+(-) or −(+)
where the signs are different
Is the answer positive or negative?
negative
What are the two aspects of integers that should be recognized and described?
Direction and magnitude
Direction refers to whether the integer is positive or negative, while magnitude refers to its absolute value.
How can integers be represented on a number line?
By identifying their position relative to zero
Positive integers are to the right of zero, while negative integers are to the left.
What symbols are used to compare and order integers?
Less than <
greater than >
equals to =
These symbols help in establishing the relative value of integers.
What is a directed number sentence?
A mathematical sentence that models a situation involving integers
What four operations can be applied to integers?
Addition, subtraction, multiplication, and division.
These operations form the basis of arithmetic with integers.
What is the significance of grouping symbols when solving problems with integers?
They indicate the order in which operations should be performed.
Examples of grouping symbols include parentheses and brackets.
What is the order of operations in evaluating expressions involving integers?
BODMAS, BIDMAS, PEMDAS
(either one works)
Can digital tools be used to evaluate expressions involving integers?
Yes, digital tools can assist in evaluating expressions
e.g. calculators and softwares that handle mathematical equations
What is an integer?
An integer is a whole number that can be positive, negative, or zero.
x^2 = 169
13
What do you call something that states that two expressions are equal?
An equation.
negative x positive =
positive x negative =
negative / positive =
positive / negative =
all four will equal a negative number
negative x negative =
positive x positive =
negative / negative =
positive / positive =
all four will equal a positive number
