2) Mr. Ethan divide the a land that measures 42m by 60m into equal squares.
What should be the size of largest square?
A. 30 sq. meter b. 32 sq. meter c. 34 sq. meter d. 36 sq. meter
3. Mr. Lazo would like to divide his class for their Math project. There are 32
boys and 24 girls in the class. How many possible group can she make if he
wants to grouped them with the same number of boys and girls and no
remainder?
A. He can form 2, 4 or 8 groups
c. He can form 5, 6 or 7 groups
B. He can form 3, 6, or 9 groups
d. He can form 2, 3 or 5 groups
4. If Mr. Lazo choose the highest possible group that he can make, how many
girls and boys will be in each group?
A. 8 girls and 6 boys
c. 4 girls and 3 boys
B. 8 boys and 6 girls
d. 4 boys and 3 girls
5. Security A rounds every 2 minutes and 20 seconds in the gate 1. Security B
rounds every 1 minute and 40 seconds in the gate 2. If they conduct rounds at
the same time. After how many minutes they will rounds together again?
A. after 15 minutes
c. after 17 minutes
B. after 16 minutes
d. after 18 minutes
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Greatest Common Factor and Least Common Multiple
To solve word problems involving least common multiple, identify the multiples of each number. Look for the lowest multiple on the list. Multiples are the products of multiplying a certain number by 1 - 10. To solve for word problems involving greatest common factor, list all the possible factors of the given numbers. Among the listed factors, choose the highest.
Answers:
2. D.
3. A.
4. D.
5. D.
Solutions:
2. Asked: The size of the largest square.
Given: 42 m x 60 m - dimensions of the land
Operation: Find the GCF of 42 and 60.
Number Sentence: A = s²
Solution: 42 - 1, 2, 3, 6, 7, 14, 21, 42
60 - 1, 2, 3, 4, 5, 6, 10, 12, 15, 30, 60
Answer: GCF: 6
Then find the area.
A = 6m x 6m = 36m²
3. Asked: The possible number of groups formed with the same number of
boys and girls.
Given: 32 boys
24 girls
Operation: Find the GCF of 32 and 24.
Solution: 32 - 1, 2, 4, 8, 16, 32
24 - 1, 2, 3, 4, 6, 8, 12, 24
Answer: GCF: 8
4. Asked: The number of boys and girls in each group.
Given: 32 boys
24 girls
Operation: division
Number Sentence: 32 ÷ 8 = N 24 ÷ 8 = N
Solution: 32 ÷ 8 = 4
24 ÷ 8 = 3
Answer: 4 boys and 3 girls
5. Asked: The number of minutes that Security A and B will conduct rounds
together.
Given: Security A - 2 minutes and 20 seconds
Security B - 1 minute and 40 seconds
Operation: Find the least common multiple of 140 seconds and 100
seconds.
Number Sentence:
Solution:
Answer: 1080 seconds
How to solve word problems involving LCM and GCF: brainly.ph/question/9962518
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