Download Math 4 (SY 2010-2011) Second Trimester UT 1 Choose the correct

Math 4 (SY 2010-2011)
Second Trimester UT 1
A. Choose the correct answer from the list. Write your answer before each number.
Composite
Factors
Product
divisible
prime
one
Greatest Common Factor
Least Common Multiple
multiples
two
_______________ 1. The numbers that we multiply.
_______________ 2. A number greater than 1 that has exactly two factors: one
and itself.
_______________ 3. The largest number that are the common factors of two
numbers.
_______________ 4. A number greater than 1 with more than two factors.
_______________ 5. The smallest number common to the list of multiples of
two or more numbers.
_______________ 6. The only even number that is prime.
_______________ 7. It has only one factor. It is neither prime nor composite.
_______________ 8. A number is __ by another number if the remainder is 0.
_______________ 9. A number that is a factor of any given number.
_______________ 10. The product obtained when a counting number is
multiplied by a given number.
B. List down all factors of the following:
1. 8 ______________________
6.
48 ______________________
2. 18 _____________________
7.
72 ______________________
3. 26 _____________________
8.
56 ______________________
4. 36 _____________________
9.
63 ______________________
5. 42 _____________________
10. 150 _____________________
C. List down the first 10 multiples of the following:
1. 6 ______________________
6.
32 ______________________
2. 7 ______________________
7.
8 _______________________
3. 14 _____________________
8.
30 ______________________
4. 18 _____________________
9.
60 ______________________
5. 25 _____________________
10. 75 ______________________
D. Identify whether the numbers below are prime or composite.
6. 2 ______________________
6.
57 ______________________
7. 27 _____________________
7.
91 _______________________
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Math 4 (SY 2010-2011)
Second Trimester UT 1
8. 51 _____________________
8.
89 ______________________
9. 67 _____________________
9.
87 ______________________
10. 59 _____________________
10. 97 ______________________
E. True or False: Write true if it is correct and false if it is wrong.
_____________ 1. Every number is a multiple of itself.
_____________ 2. 1 is a multiple of every number.
_____________ 3. Every number is a factor of itself.
_____________ 4. 1 is a factor of every number.
_____________ 5. Every number is a multiple of 1.
_____________ 6. Every number is a factor of 1.
_____________ 7. 6 is a factor of 9.
_____________ 8. 9 is a multiple of 6.
_____________ 9. 5 is a factor of 10.
_____________ 10. If the first number is a factor of the second number, then
The second number is a multiple of the first number.
F. Do the prime factorization of the following numbers using the Factor Tree
Method.
1. 39
2.
48
4. 120
5. 450
3. 57
6. 225
G. Use Decomposition Method to express the following numbers as a product of
prime factors.
1. 56
2.
180
3. 312
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Math 4 (SY 2010-2011)
Second Trimester UT 1
4. 78
5. 95
6. 1026
H. Find the GCF.
Use Decomposition Method:
1. 18, 78, 198
GCF = ___________
2. 54, 12, 84
GCF = ___________
3. 12, 16, 18
GCF = ___________
Use Listing Method:
4. 20, 30, 50, 40
GCF = ___________
5. 16, 32, 48
GCF = ___________
6. 48, 56, 64
GCF = ___________
Use Factor Tree:
7. 28, 42, 70
GCF = ___________
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Math 4 (SY 2010-2011)
Second Trimester UT 1
8. 60, 96, 108
GCF = ___________
9. 52, 65
GCF = ___________
I. Find the LCM:.
Use Listing Method:
1. 15 = ___________________
LCM = ___________
180= __________________
2. 42 = ___________________
LCM = ___________
56 ___________________
3. 96 = ____________________
LCM = ___________
212 = ___________________
Use Factor Tree Method:
4. 24 = ____________________
LCM = ___________
48 = ____________________
128 = ___________________
5. 52 = ____________________
LCM = ___________
65 = ____________________
91 = ____________________
6. 18 = ____________________
LCM = ___________
78 = ____________________
98 = ____________________
Use Decomposition Method:
7.
18, 45, 75
8.
12, 30, 44
9.
24, 60, 90
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Math 4 (SY 2010-2011)
Second Trimester UT 1
J. Problem Solving:
1. Jilleen is the younger sister of Jessica. Their ages are the same as the prime
factorization of 85. How old is Jilleen? How old is Jessica?
2. Three ribbons with lengths: 180 cm, 225 cm and 270 cm, are to be cut into
pieces of equal lengths. What is the longest possible length of the ribbons
without wasting any part?
3. Mangoes are being harvested in an orchard. If the mangoes are to be
packed in 30, 40 or 80 pieces per bag, what is the least number of mangoes
possible so that no mango will be left out?
4. Anne is arranging her photographs in rows. If she has 52 photographs in one
box and 68 photographs in another box, how many photographs should there
be in a row so that there will be no left over and the number of rows will be
the fewest possible?
5. A jar contains some cookies. If Bea gets 7 pieces each time, there will be 6
cookies left. If she gets 8 pieces each time, no cookie will be left. What is the
least possible number of cookies in the jar?
K. Classify the given fractions. Choose from the words inside the box. Write the
letter only.
A. Similar Fraction
B. Dissimilar Fractions
C. Proper Fraction
D. Mixed Number
E. Improper Fraction
F. Unit Fractions
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Math 4 (SY 2010-2011)
Second Trimester UT 1
____ 1.
_____ 6.
5
6
21
21
_____ 2.
_____ 7.
8
6
8
28
_____ 3.
15
28
24
28
_____ 8.
15
1
3
_____ 4.
13
27
25
34
3
4
2
3
1
5
3
7
_____ 9.
42
16
_____ 5.
_____ 10.
1
12
5
L. Matching Type:
5
7
________ 1. Fractions less than 1
A. Similar Fraction
________ 2. Number of equal parts considered
B. Denominator
________ 3. A part of a whole
C. Improper
________ 4. Fraction with the same denominators
D. Numerator
________ 5. Number of parts the whole is divided.
E. Fractions
________ 6. Fraction equal to 1 or greater
F. Proper Fraction
M. Write as mixed numbers or whole numbers:
________ 1. 12/5
________ 6.
40/8
________ 2. 16/7
________ 7.
60/5
________ 3. 21/5
________ 8.
75/5
________ 4. 18/4
________ 9.
90/4
________ 5. 32/6
________ 10. 112/15
N. Express as improper fractions:
________ 1. 5 1/2
________ 6.
15 3/4
________ 2. 3 3/9
________ 7.
9 4/9
________ 3. 9 1/4
________ 8.
7 3/8
________ 4. 12 2/3
________ 9.
24 5/7
________ 5. 8 7/8
________ 10. 6 5/6
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