Exam review

Make sure you know how to plot points on a coordinate paper.

Must remember:
(+, +) quadrant 1
(-, +) quadtrant 11
(-, -) quadrant 111
(+, -) quadrant 1111

Adding, subtracting, multiplying, and dividing decimal numbers using a calculator

try this: 
1) 21.34+32.56+1.09=
2) 675.42-324.78=
3) 23.78x5.06= 
4) 678.987/8.17=


answers:
1) 54.99
2) 350.64
3) 120. 2762
4) 119. 8270502

Divisibility Rules


0- end in zero


1- all numbers


2- even numbers


3- sum of the digits in 3


4- divisible by 2 twice


5- ends in 0 or 5


6- divisible by 2 and 3


8- divisible by 2 thrice


9- sum of the digits is 9


10- ends in 0