MATHEMATICS Flashcards
WHAT IS A PEMDAS?
PARENTHESIS, EXPONENTS, MULTIPLY AND DIVIDE (from left), ADD AND SUBTRACT (from left).
Solve the following:
5+(3x1)² + 4-5
5+(3x1)² + 4-5
= 5+(3)² + 4-5
= 5+9+4-5
= 14+4-5
= 18-5
= 13
THE ANSWER IS 13.
It is the process of obtaining prime numbers that must be multiplied together in order to get a particular number.
PRIME FACTORIZATION
It is a number greater than 1 and has only 2 factors: 1 and itself.
PRIME NUMBER
What are the prime factors of 52?
A. 11 x 2 x 3
B. 13 x 2 x 2
C. 23 x 2
D. 2 x 2 x 2 x 3
B. 13 x 2 x 2
TIP: if galibog kas prime factorization e add lang ang mga number nga naa sa choices nga mag equal or result sa number na imong gipangeta, e make sure lang nga prime numbers sya. Example: 13 x 2 x 2 = 52
It is a smallest number divisible by all the numbers in a set.
LEAST COMMON MULTIPLE (LCM)
BOTTOM TO TOP
LCM
WHAT IS THE LEAST COMMON MULTIPLE OF 5 AND 9?
A. 25
B. 40
C. 45
D. 50
C. 45
Note: Imong e divide ang pinakagamay nga number sa option sa number nga naa sa question, if ma divide syas both number then mao ang answer. Example: 45/9 = 5 and 45/5 = 9
It is the HIGHEST NUMBER that divides exactly two or more numbers.
GREATEST COMMON FACTOR (GCM)
TOP TO BOTTOM
GCM
What is the GCF of 36 and 18?
A. 18
B. 3
C. 9
D. 6
A. 18
Note: E divide ang number sa question sa pinakadako nga number sa option. If ma divide sya sa both number then maoy answer.
Ex. 36/18= 2 and 18/18= 1
WHAT ARE THE CLUES FOR LCM?
SMALLEST NUMBER
LEAST NUMBER
SAME TIME
SAME DAY
MEET TOGETHER
BLINK TOGETHER
FLICKER TOGETHER
WHAT ARE THE CLUES FOR GCF?
GREATEST NUMBER
LARGEST NUMBER
BIGGEST NUMBER
HIGHEST NUMBER
Answer the following problem:
Camryn practices the trumpet every 11th day and the flute every 3rd day. Camryn practiced both the trumpet and the flute today. How many DAYS until Camryn practices the trumpet and flute again in the SAME DAY?
A. 22
B. 45
C. 23
D. 33
D. 33
Note: divide from bottom to top. (LCM)
Answer the following problem.
Josefa is making bead necklaces. She has 90 green beads and 108 blue beads. What is the GREATEST NUMBER of identical necklaces she can make if she wants to use all of the beads?
A. 12
C. 16
B. 15
D. 18
D. 18
Note: Top to bottom (GCF)
IT IS A COMPARISON OF TWO QUANTITIES BY DIVISION.
RATIO
You can write it in different ways:
A is to B - in words
A:B - in colon form
A/B - in fraction form
RATIO
RATIO can be write in different ways such as:
A is to B - in words
A:B - in colon form
A/B - in fraction form
Mang Dino has farm located at south of North Carolina. In his farm, there are 50 cows, 40 chickens, and 100 horses. What is the ratio of cows and chickens?
A. 2/2
B. 5:4
C. 6 is to 10
D. 10:4
B. 5:4
Explanation: Cows is 50 and chickens is 40 so the ratio is 50:40 or 5:4 since we will divide it to 10 to get the lowest term.
An orchard has 28 apple trees, 27 orange trees, and 14 cherry trees.
What is the ratio of apple trees to cherry trees?
A. 2:1
B. 5:2
C. 6 is to 3
D. 10/11
A. 2:1
Explanation: Apple trees is 28, Cherry trees is 14 so there ration is 28:14 or 2:1 since we will divide it to 14 to get the lowest term.
It is an equality of two ratios.
PROPORTION
What is the formula for proportion?
Formula:
X1/Y1 = X2/ Y2
Direct proportion problem:
If two pencil cost 3 dollars, how many pencils can you buy with 9 dollars?
6 pencils
One quantity increases, the other decreases and vice versa.
INVERSE PROPORTION
What is the formula for inverse proportion?
(X1)(Y1) = (X1)(Y2)
It takes 6 hours for 4 men to repair a road. How long will it take 8 men to do the job if they work at the same rate?
3 hours
One quantity is being partitioned into different proportions.
PARTITIVE PROPORTION
In a class of 40, the ratio of boys to girls is 3:5. How many are girls? How many are boys?
Answer: Girls are 25, boys are 15.
Solution:
3:5 so e add nimu sya 3+5= 8. There are 40 in a class so 40/8= 5.
Since sa question kay 3:5 man ang ratio, e multiply nato sya each sa 5. So 3x5= 15 (boys) and 5x5=25 (girls)
It means “Per hundred”
PERCENT
What are the two types of percent? Or conversion techniques?
• Percent to decimal
• Decimal to percent
We remove the percent symbol and move the decimal point TWO PLACES to the left. Example: 55% - 55 - .55
PERCENT TO DECIMAL
We move the decimal point TWO PLACES to the RIGHT and affix the percent symbol.
Ex. .34 - 34 - 34%
DECIMAL TO PERCENT
OF USUALLY MEANS?
MULTIPLY
“IS” USUALLY MEANS?
EQUALS
It is a part of a whole “WHAT IS”
PERCENTAGE
