Integers

By: Joseph Brentjens

I am going to use four numbers to tell you about integers. I will use .9 , -4, 6, and 4/5.

Compare:

.9 > -4

-4 < 4/5

.9 < 6

-4 < 6

.9 > 4/5

4/5 < 6

Least to greatest :

-4 , 4/5 , .9 , 6

Math problems (not the numbers above)

(-4) + (-39)= -43

-9 x -10 = 90

-9 + 12 = 3

6 x -8 = -4

4 - 9 = -5

(-51) - ( 44) = -7

34 / -2 = -17

108/9 = 12

Real world problems:

Q. Joseph has -50 dollars. He earns 19 dollars every week. How much money does he have after 12 weeks?

A. $178

Q. Emma has -100 dollars. She gets 1005 dollars from winning the lottery. Now she wants to buy 5 150 dollar phones. How much money does she have now?

A. $155

Q. Joseph gets 100,000 dollars from a best selling book. He already has 500,000 dollars from previous books. Joseph wants to get a 259,035 dollar penguin and a 189,450 dollar narwhal. If he does buy these animals how much money does he have left?

A. $151,512

Absolute value:

Absolute value- How far a number is away from zero

Absolute value problems:

|.9| + -4 = -3.1

| -4| + .9 = 4.9

| 6 | + 4/5 = 6 4/5

| 4/5| + .9 = 1 7/10

Number line: