TSIA2 Math EXAM 50
QUESTIONS AND ANSWERS
How to -/+ unlike fractions - ANSWER>>>- a find the common denominator and
multiply.
1/2(4)+3/8-> 4/8+3/8= 7/8
- b add the numerators and reduce.
- Just divide both n&d by the number
How to find the common denominator - ANSWER>>>The common denominator is the
lcm of the given fractions.
- 3/4,1/5
4,8,12,16,20
1,2,3,4,5
3/4(5),1/5(4)
=15/20,4/20
Multiply both fractions by their LCM
The square root of a number is always... - ANSWER>>>positive
Find Dimensions means... - ANSWER>>>Find the length and width
Ordered pair - ANSWER>>>Any air of numbers for which the order is important. (x,y)
Divisibility Rules - ANSWER>>>2- When the number is even
3- the sum of the digits is divisible by 3
5- limit digit is 0 or 5
9- sum is divisible by 9
10- ends in 0
6- odd numbers and 2
Prime factorization - ANSWER>>>The numbers multiplied together to get the original to
get the original number.
Reducing Fractions - ANSWER>>>Divide the numerator and denominator by their gcm.
30/75
30,15
1,2
gcf=15
15/5
, The gcf of both terms is 1.
Comparing Proper Fractions - ANSWER>>>1)Find multiples to make common
denominators
5/8,7/12
8,16,24
1,2,3
12,24
2) Multiply fractions by lcm to get common denominators
15/24>14/24
Mixed Number to an Improper Fraction - ANSWER>>>Multiply Denominator by whole
number
Add result to numerator.
How to tell if an ordered pair is a function - ANSWER>>>If multiple X coordinates in the
set, the relation is not a function.
Dividing Decimal by Decimal - ANSWER>>>A decimal (power of 10) moves to the right
= to # of 0s in the power of 10
Slope Formula - ANSWER>>>m=y2-y1/x2-x1
Converting Decimals to fractions - ANSWER>>>-1 Write the denominator as the
furthest place from the decimal to the right
0.08=x/100
-2 Write the numerator as the terms to the right of the decimal
8/100
-3 Reduce by dividing by the GCF
4*2=8
4*25=100
=2/25
Multiplying Decimals - ANSWER>>>1- Set them above each other 16.1(2.4)
=16.1
*2.4
-2 Multiply then add
=3864
3- The total of digits behind the decimals in the problem is how many are behind it in the
result.
Point Slope Formula - ANSWER>>>y-y1=M(x-x1)
Cross canceling ( multiplication & reducing fractions) - ANSWER>>>
Degrees of Exponents - ANSWER>>>Name -Degree- Exmple
QUESTIONS AND ANSWERS
How to -/+ unlike fractions - ANSWER>>>- a find the common denominator and
multiply.
1/2(4)+3/8-> 4/8+3/8= 7/8
- b add the numerators and reduce.
- Just divide both n&d by the number
How to find the common denominator - ANSWER>>>The common denominator is the
lcm of the given fractions.
- 3/4,1/5
4,8,12,16,20
1,2,3,4,5
3/4(5),1/5(4)
=15/20,4/20
Multiply both fractions by their LCM
The square root of a number is always... - ANSWER>>>positive
Find Dimensions means... - ANSWER>>>Find the length and width
Ordered pair - ANSWER>>>Any air of numbers for which the order is important. (x,y)
Divisibility Rules - ANSWER>>>2- When the number is even
3- the sum of the digits is divisible by 3
5- limit digit is 0 or 5
9- sum is divisible by 9
10- ends in 0
6- odd numbers and 2
Prime factorization - ANSWER>>>The numbers multiplied together to get the original to
get the original number.
Reducing Fractions - ANSWER>>>Divide the numerator and denominator by their gcm.
30/75
30,15
1,2
gcf=15
15/5
, The gcf of both terms is 1.
Comparing Proper Fractions - ANSWER>>>1)Find multiples to make common
denominators
5/8,7/12
8,16,24
1,2,3
12,24
2) Multiply fractions by lcm to get common denominators
15/24>14/24
Mixed Number to an Improper Fraction - ANSWER>>>Multiply Denominator by whole
number
Add result to numerator.
How to tell if an ordered pair is a function - ANSWER>>>If multiple X coordinates in the
set, the relation is not a function.
Dividing Decimal by Decimal - ANSWER>>>A decimal (power of 10) moves to the right
= to # of 0s in the power of 10
Slope Formula - ANSWER>>>m=y2-y1/x2-x1
Converting Decimals to fractions - ANSWER>>>-1 Write the denominator as the
furthest place from the decimal to the right
0.08=x/100
-2 Write the numerator as the terms to the right of the decimal
8/100
-3 Reduce by dividing by the GCF
4*2=8
4*25=100
=2/25
Multiplying Decimals - ANSWER>>>1- Set them above each other 16.1(2.4)
=16.1
*2.4
-2 Multiply then add
=3864
3- The total of digits behind the decimals in the problem is how many are behind it in the
result.
Point Slope Formula - ANSWER>>>y-y1=M(x-x1)
Cross canceling ( multiplication & reducing fractions) - ANSWER>>>
Degrees of Exponents - ANSWER>>>Name -Degree- Exmple
